A strong choice for a 302 build delivers verified small-block Ford fitment, suitable chamber and runner dimensions, and the right level of assembly for your project. These options suit rebuilders comparing bare aluminum heads, assembled aluminum pairs, and remanufactured factory GT40P heads. The biggest distinction is whether you want to supply and install valvetrain parts yourself or receive an assembly with key components already installed.
The listed aluminum options vary from 61cc to 64cc chambers and include runner volumes from 175cc to 210cc. Check those numbers against your engine combination rather than treating fitment language alone as proof of compatibility.
This roundup also flags a remanufactured OEM option that fits a 302 but is not listed as aluminum, so it belongs at the bottom for this keyword.
The Ford Racing M-6049-Z304DA7 leads as Best Overall because it is listed for 302 and 351 Windsor engines and arrives assembled from A356 T6 aluminum. Its listed equipment includes 2.02-inch intake and 1.60-inch exhaust valves, plus springs, retainers, and locks. That makes it a more complete aluminum option than the bare heads, which require additional parts and assembly.
Confirm the head’s specifications against your exact engine and cam setup before ordering; the listing notes that most hydraulic cams can be used, not that every combination is compatible.
Our Top Picks
Best OverallListed for 302 and 351 Windsor engines, this assembled A356 T6 aluminum head includes 2.02-inch intake and 1.60-inch exhaust valves.
View on Amazon
Largest RunnerThe assembled aluminum pair lists 210cc intake runners and 62cc chambers, with valves and springs installed; its listing restricts use to racing.
View on Amazon
Assembled PairThis cast-aluminum pair fits SBF 302 applications and lists 175cc–185cc intake runners, 64cc chambers, and 2.020-inch intake valves.
View on Amazon- 64cc Chamber PUFFIS 64cc Bare Head
Compare the 302 Cylinder Head Options
| # | Product | Weight | Dimensions | Buy |
|---|---|---|---|---|
| 1 | 1. Ford Racing M-6049-Z304DA7Best Overall | 31.3 lb | — | View on Amazon |
| 2 | 2. Speedmaster PCE281.2049Largest Runner | 56.2 lb | 23.62 x 9.06 x 5.51 in | View on Amazon |
| 3 | 3. Mixizap Assembled SBF HeadsAssembled Pair | 58.5 lb | — | View on Amazon |
| 4 |  4. IMOOA 185cc Bare PairBare-head SBF rebuild pair | — | — | View on Amazon |
| 5 |  5. Weonefit 185cc Bare PairBare pair with runner details | 46 lb | 21.65 x 14.17 x 9.45 in | View on Amazon |
| 6 |  6. GELUOXI 185cc Bare PairBare pair with 65cc exhaust | 46 lb | 21.65 x 14.17 x 9.45 in | View on Amazon |
| 7 |  7. Mixizap 185cc Bare HeadSingle bare Mixizap head | 23.1 lb | 21.85 x 9.65 x 6.89 in | View on Amazon |
| 8 |  8. PUFFIS 64cc Bare Head64cc Chamber | 25.3 lb | 21.65 x 9.84 x 9.45 in | View on Amazon |
| 9 |  9. GT40P Remanufactured PairRemanufactured GT40P pair | 30 lb | — | View on Amazon |
| 10 |  10. Amazon Renewed GT40P HeadRebuilt GT40P assembly | 30 lb | — | View on Amazon |
Detailed Reviews: Best Aluminum Heads For 302
#1 · Best Overall
1. Ford Racing M-6049-Z304DA7
- Weight: 31.3 lb
Best for: Ford assembled Windsor head.
Why it ranks #1: Listed for 302 and 351 Windsor engines, this assembled A356 T6 aluminum head includes 2.02-inch intake and 1.60-inch exhaust valves.
Ford Racing’s assembled head is cast from A356 T6 aluminum and lists premium stainless valves, distinguishing it from bare SBF replacements. It is specified for 302 and 351 Windsor engines, with 2.02-inch intake and 1.60-inch exhaust valves and a stated conical spring setup.
The assembled configuration includes 7mm stainless intake and exhaust valves, PAC 1219X conical-style springs, machined retainers, and machined locks, giving the buyer a defined valvetrain package to consider. Ford notes that most hydraulic cams can be used with the assembly, providing a practical compatibility cue without claiming universal cam fit. The listed 302/351 Windsor fitment and aluminum casting establish the application and material; matching the assembly to the specific engine and cam remains essential.
- Fits listed 302 and 351 Windsor engines
- A356 T6 aluminum casting
- Stainless 2.02-inch intake and 1.60-inch exhaust valves
- PAC conical springs with machined retainers and locks
- The listing does not provide chamber or runner volume figures.
Skip it if you need chamber and runner volumes specified for comparison; the Speedmaster PCE281.2049 lists a 62cc chamber and 210cc intake runner.
This suits a Windsor builder seeking a Ford Racing assembled head with its valves and spring hardware specified. The listing notes compatibility with most hydraulic cams, but does not provide chamber or runner volume figures.
Full product details
| Brand | Ford |
|---|---|
| Included Components | Automotive Equipment and Tools^Paint/Body Tools & Equipment^Body Repair Tools^automotive-body-repair-tools |
| Item Dimensions | 21.8 x 9.4 x 7.4 inches |
| Item Weight | 31.3 pounds |
| Dimensions | 21.8 x 9.4 x 7.4 inches |
| Manufacturer | Ford Racing |
| Part Number | M-6049-Z304DA7 |
| Manufacturer Warranty Description | Please contact us if you experience any issues within 30 days of receipt. |
| Material | Aluminum |
| Model Number | M-6049-Z304DA7 |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: Ford Racing M-6049-Z304DA7 Cylinder Head Assembled
View on Amazon#2 · Largest Runner
2. Speedmaster PCE281.2049
- Weight: 56.2 lb
- Dimensions: 23.62 x 9.06 x 5.51 in
Best for: Racing hydraulic-flat pair.
Why it ranks #2: The assembled aluminum pair lists 210cc intake runners and 62cc chambers, with valves and springs installed; its listing restricts use to racing.
Installed springs and valves distinguish the Speedmaster assembled pair, which is specified for hydraulic flat-tappet use. Its 210cc intake runner and 62cc chamber provide a clear starting point for evaluating the combination, while the listing explicitly limits the heads to racing applications and says they are not for street use.
The assembled format with springs and valves installed can reduce the separate component-installation work associated with bare heads. A 210cc intake runner and 62cc chamber give builders concrete dimensions to compare with their engine requirements, and the hydraulic flat-tappet designation narrows the stated cam-style application. The crucial operating boundary is explicit: these heads are intended for racing applications only, not street use. That restriction should guide both component selection and the vehicle’s intended role.
- Assembled pair with springs and valves installed
- Hydraulic flat-tappet application
- 210cc intake runner
- 62cc combustion chamber
- Manufacturer states these heads are for racing applications only, not street use.
Skip it if you need heads for street use; the Ford Racing M-6049-Z304DA7 listing says most hydraulic cams can be used with its assembly.
This pair is aimed at a racing build using a hydraulic flat-tappet setup that suits its stated configuration. The explicit not-for-street-use limitation is decisive, so choose another head for a street-driven 302.
Full product details
| Brand | Speedmaster |
|---|---|
| Item Weight | 56.2 pounds |
| Item model number | PCE281.2049 |
| Manufacturer | Speedmaster |
| Part Number | PCE281.2049 |
| Model | PCE281.2049 |
| Dimensions | 23.62 x 9.06 x 5.51 inches |
| Additional Information | Important information |
Listed on Amazon as: Assembled Cylinder Heads Compatible with Small Block Ford 260/289/302/351W/5.0 210cc/62cc – Hydraulic Flat Compatible, Springs/Valves Installed, Bolt-On Pair
View on Amazon#3 · Assembled Pair
3. Mixizap Assembled SBF Heads
- Weight: 58.5 lb
Best for: Assembled cast-aluminum pair.
Why it ranks #3: This cast-aluminum pair fits SBF 302 applications and lists 175cc–185cc intake runners, 64cc chambers, and 2.020-inch intake valves.
An assembled two-head package separates the Mixizap from bare replacements, while its stated 175cc–185cc intake runner range gives builders a useful sizing reference. It is listed for Ford SBF 289, 302, and 351W applications, with cast-aluminum construction and 64cc chambers defining the core combination.
The 64cc combustion chamber and 64cc exhaust runner accompany a 175cc–185cc intake runner range, helping the buyer compare several specified flow-path dimensions when planning a build. The listing also gives 2.020-inch intake and 1.600-inch exhaust valves and a straight spark-plug style, useful installation details to weigh against the intended setup. The product is described as assembled and tested before shipping, reducing the assembly work relative to bare heads, though no specific included hardware list is supplied.
- Two cylinder head assemblies
- Listed for Ford SBF 289, 302, and 351W
- 175cc–185cc intake runner range and 64cc chamber
- Straight spark-plug style and stated valve diameters
- The listing does not specify a detailed included-hardware inventory.
Skip it if you need listed 5.0L fitment and bronze guides; the GELUOXI 2PCS 432793A specifies both, while this listing names 289, 302, and 351W.
This pair fits a builder prioritizing an assembled cast-aluminum option for a listed 302 application and a defined runner range. Check the unspecified hardware inventory against your installation plan before treating it as a complete bolt-on package.
Full product details
| Brand | Mixizap |
|---|---|
| Item Weight | 58.5 pounds |
| Item model number | Mixizap 432793B 2PCS |
| Manufacturer | Mixizap |
| Part Number | Mixizap 432793B 2PCS |
| Model | Cylinder Head Assembly |
| Package Dimensions | 22.83 x 20.87 x 8.66 inches |
Listed on Amazon as: 2Pcs Cylinder Head Cast Aluminum Assembled for Ford SB V8
View on Amazon#4
4. IMOOA 185cc Bare Pair
Best for: Bare-head SBF rebuild pair.
Why it ranks #4: A bare aluminum pair explicitly fits 289, 302, and 351W engines, with 185cc intake runners, 61cc chambers, and bronze guides.
A 185cc intake runner paired with a 61cc chamber gives the IMOOA bare-head pair a specific port-and-chamber combination for Ford small-block builds. Its listed fitment covers 289, 302, 351W, and 5.0L V8 engines, while bronze valve guides and ductile iron seats supply durable valve-contact surfaces.
This is a bare pair, so it suits a rebuild workflow where the installer will select and fit the valve hardware rather than use a complete assembled head. The 2.020-inch intake and 1.600-inch exhaust valve diameters, alongside the 185cc intake runner and 61cc chamber, provide concrete dimensions for planning a compatible combination. High-grade aluminum keeps the head material specified, while bronze guides and ductile iron seats address wear at the valve interfaces.
- Pair of bare cylinder heads
- Listed for 289, 302, 351W, and 5.0L V8 engines
- 185cc intake runner and 61cc chamber
- Bronze guides and ductile iron seats
- Bare heads require the buyer to source and install valve hardware separately.
Skip it if you need assembled heads ready to install; the Speedmaster PCE281.2049 lists installed springs and valves, while this pair is bare.
For a Ford small-block builder assembling a matched bare-head pair, the IMOOA’s listed 302 fitment and defined runner and chamber volumes are useful planning points. Allow for the additional work and parts required to complete bare heads.
Full product details
| Brand | IMOOA |
|---|---|
| Item model number | MTD0198 x 2 |
| Manufacturer | IMOOA |
| Part Number | MTD0198 x 2 |
| Model | Cylinder Head |
Listed on Amazon as: One Pair Bare Cylinder Heads For Ford Small Block SBF 289 302 351W
View on Amazon#5
5. Weonefit 185cc Bare Pair
- Weight: 46 lb
- Dimensions: 21.65 x 14.17 x 9.45 in
Best for: Bare pair with runner details.
Why it ranks #5: This bare pair lists 302 fitment, aluminum construction, 185cc intake runners, 61cc chambers, and 2.020-inch intake valves.
A listed 65cc exhaust runner adds a useful specification alongside the 185cc intake runner on Weonefit’s bare-head pair. The heads are identified for Ford 289, 302, 351W, and 5.0L V8 engines, enabling builders to assess a defined set of port, chamber, and valve dimensions before assembling a combination.
The 61cc chamber, 2.020-inch intake valve, and 1.600-inch exhaust valve give a builder specific measurements to compare with the planned engine setup. The 11/32-inch valve stem diameter adds another hardware dimension for component selection. Since this is a set of two bare heads, installation requires completing the heads rather than bolting on a finished assembly. High-grade aluminum, bronze guides, and ductile iron seats specify the construction and valve-contact materials.
- Set of two bare heads
- 185cc intake and 65cc exhaust runner volumes
- 2.020-inch intake and 1.600-inch exhaust valves
- Bronze guides and ductile iron seats
- Bare heads are not listed as assembled with valves or springs.
Skip it if you need reconditioned OEM castings with a specified refurbishment process; the Generic GT40P set lists pressure testing and a valve job.
Choose this pair if you are building a compatible Ford small-block and want the exhaust runner, intake runner, chamber, and valve dimensions stated up front. Its bare format means completing the assembly remains part of the project.
Full product details
| Brand | Weonefit |
|---|---|
| Item Weight | 46 pounds |
| Item model number | Weonefit 2PCS 432793A SBF 185cc 61cc |
| Manufacturer | Weonefit |
| Part Number | Weonefit 2PCS 432793A SBF 185cc 61cc |
| Model | Cylinder Head |
| Dimensions | 21.65 x 14.17 x 9.45 inches |
Listed on Amazon as: Pair Bare Cylinder Head Replacement for Ford Small Block SBF 289 302 351W and 5.0L V8 models, Aluminum, 185cc Intake Runner & 61cc Chamber Weonefit
View on Amazon#6
6. GELUOXI 185cc Bare Pair
- Weight: 46 lb
- Dimensions: 21.65 x 14.17 x 9.45 in
Best for: Bare pair with 65cc exhaust.
Why it ranks #6: The aluminum pair lists 302 fitment, 185cc intake runners, 61cc chambers, bronze guides, and ductile iron valve seats.
A 65cc exhaust runner and 185cc intake runner make the GELUOXI bare pair’s port dimensions explicit for a Ford small-block build. Its listed compatibility includes 289, 302, 351W, and 5.0L V8 engines, while a 61cc chamber and specified valve sizes further define the replacement head.
The 2.020-inch intake and 1.600-inch exhaust valves, together with the 11/32-inch stem diameter, offer concrete dimensions for component planning. A 61cc chamber and stated 185cc intake and 65cc exhaust runners help buyers compare the pair with their target combination. High-grade aluminum, bronze valve guides, and ductile iron seats describe its construction. Because the heads are bare, the buyer must account for completing the assemblies during the build workflow.
- Pair of bare cylinder heads
- 185cc intake and 65cc exhaust runners
- 61cc chamber and specified valve stem diameter
- High-grade aluminum with bronze guides and ductile iron seats
- Bare format requires completing the heads before installation.
Skip it if you need an assembled pair with springs and valves installed; Speedmaster PCE281.2049 lists those components, unlike these bare heads.
For a builder assembling a Ford 302 or another listed small-block, this pair offers explicit runner, chamber, and valve dimensions. Its bare format suits a parts-selection workflow, not a buyer seeking a ready-assembled head set.
Full product details
| Brand | GELUOXI |
|---|---|
| Item Weight | 46 pounds |
| Item model number | GELUOXI 2PCS 432793A SBF 185cc 61cc |
| Manufacturer | GELUOXI |
| Part Number | GELUOXI 2PCS 432793A SBF 185cc 61cc |
| Model | Cylinder Head |
| Dimensions | 21.65 x 14.17 x 9.45 inches |
Listed on Amazon as: 2Pcs Bare Cylinder Head Replacement for Ford Small Block SBF 289 302 351W 5.0L V8 Aluminum 61cc Chamber 185cc Intake 65cc Exhaust Runner GELUOXI
View on Amazon#7
7. Mixizap 185cc Bare Head
- Weight: 23.1 lb
- Dimensions: 21.85 x 9.65 x 6.89 in
Best for: Single bare Mixizap head.
Why it ranks #7: This bare aluminum head fits listed 302 applications and specifies 185cc intake runners, a 61cc chamber, and 2.020-inch intake valves.
A 61cc chamber and 185cc intake runner give this Mixizap bare head a clearly specified profile for a Ford small-block replacement. The listing covers 289, 302, 351W, and 5.0L V8 applications, and its 2.020-inch intake and 1.600-inch exhaust valves add useful sizing details.
The listed 65cc exhaust runner and 11/32-inch valve stem diameter complement the intake runner and chamber figures, helping a builder evaluate the head’s specified dimensions during parts planning. High-grade aluminum, bronze guides, and ductile iron seats identify the construction materials at key valve-contact areas. The package includes one cylinder head, and the bare format means installation planning must account for completing the head rather than assuming a matched, assembled pair.
- 61cc combustion chamber and 185cc intake runner
- 65cc exhaust runner
- 2.020-inch intake and 1.600-inch exhaust valves
- Bronze guides and ductile iron seats
- The package includes one bare cylinder head, not a pair.
Skip it if you need a matched pair in one purchase; the Weonefit 2PCS 432793A listing specifies two bare heads with the same 61cc chamber and 185cc intake runner.
This suits a builder replacing one compatible Ford small-block head or sourcing its mate separately, with key runner and valve dimensions stated. Its single-head quantity and bare format are important limits when planning a paired installation.
Full product details
| Brand | Mixizap |
|---|---|
| Item Weight | 23.1 pounds |
| Item model number | Mixizap 432793A |
| Manufacturer | Mixizap |
| Part Number | Mixizap 432793A |
| Model | Cylinder Head |
| Dimensions | 21.85 x 9.65 x 6.89 inches |
Listed on Amazon as: Cylinder Head Replacement for Ford Small Block SBF 289, 302, 351W, 5.0L V8
View on Amazon#8 · 64cc Chamber
8. PUFFIS 64cc Bare Head
- Weight: 25.3 lb
- Dimensions: 21.65 x 9.84 x 9.45 in
Best for: Single bare-head replacement.
Why it ranks #8: The bare aluminum head fits 302 applications and lists a 64cc chamber with 175cc–185cc intake runners; it is one head, not a pair.
A 64cc chamber and 175cc–185cc intake runner range define this PUFFIS bare aluminum head for compatible Ford Windsor small-block applications. Its listing explicitly identifies a single bare head, making it relevant for a one-head replacement or a project where the second head is sourced separately.
The stated fitment covers 289, 302, 351W, and 5.0L V8 applications, while the 64cc chamber and 64cc exhaust runner offer dimensions for comparing the head with the engine plan. Its bare format has an important workflow consequence: valves, springs, retainers, locks, rocker arm studs, and guide plates are not included. That explicit parts list helps buyers plan what must be obtained before assembly, rather than assuming a complete head package.
- 64cc combustion chamber
- 175cc–185cc intake runner and 64cc exhaust runner
- Listed for 289, 302, 351W, and 5.0L V8
- Explicit disclosure of excluded valvetrain components
- Includes one bare head only, not a pair.
Skip it if you need two matching bare heads in one package; the GELUOXI 2PCS 432793A listing specifies a pair and the same 61cc chamber.
This is a fit for a builder replacing one compatible Windsor head or sourcing a second separately, with the bare-head parts list clear up front. It is not a paired purchase, and valvetrain hardware must be planned separately.
Full product details
| Brand | PUFFIS |
|---|---|
| Item Weight | 25.3 pounds |
| Item model number | PCH-SBF |
| Manufacturer | PUFFIS |
| Part Number | PFS-PCH-SBF |
| Model | PFS-PCH-SBF |
| Dimensions | 21.65 x 9.84 x 9.45 inches |
Listed on Amazon as: Bare Aluminum Cylinder Head Compatible with Ford 289 302 351W 5.0L, 64cc
View on Amazon#9
9. GT40P Remanufactured Pair
- Weight: 30 lb
Best for: Remanufactured GT40P pair.
Why it ranks #9: The rebuilt OEM GT40P pair fits a 302 5.0L and is pressure tested, but the listing does not identify its material as aluminum.
Factory GT40P castings, rebuilt as a set of two, distinguish this 302 5.0L offering from bare aluminum replacements. The remanufacturing process includes hot-tank cleaning, pressure testing, a valve job, and vacuum-tested seals, giving a buyer a specified inspection and reconditioning workflow to consider.
The listing identifies these as rebuilt Ford OEM GT40P 4 BAR angle-plug heads and specifies 7/16-inch head-bolt holes, details that matter when planning the installation around the engine’s hardware and plug arrangement. Replaced valve stem seals and valve guides as necessary, plus new seats as necessary, describe the renewal work. Final cleaning and inspection to AERA specifications adds a stated process reference; the product is a pair, not a bare casting set.
- Set of two rebuilt factory OEM GT40P heads
- Specified for 302 5.0L applications
- 7/16-inch head-bolt holes
- Hot-tank cleaning, pressure testing, and valve-job process
- The listed GT40P angle-plug configuration uses 7/16-inch head-bolt holes.
Skip it if you want bare aluminum heads with specified runner volumes; the IMOOA MTD0198 pair lists 185cc intake runners and a 61cc chamber.
This suits a 302 5.0L builder seeking a reconditioned OEM GT40P pair and a documented refurbishment process. Treat the angle-plug layout and 7/16-inch bolt holes as key installation boundaries for the intended engine.
Full product details
| Brand | Generic |
|---|---|
| Item Weight | 30 pounds |
| Item model number | GT40P1/2 ; F77E1/2 |
| Manufacturer | Ford |
| Part Number | GT40P1/2 ; F77E F87Z6049BAA-1/2 |
| Model | Cylinder Head |
Listed on Amazon as: REMANUFACTURED Cylinder Heads 302 5.0L 4 BAR GT40P Genuine OEM SET OF 2
View on Amazon#10
10. Amazon Renewed GT40P Head
- Weight: 30 lb
Best for: Rebuilt GT40P assembly.
Why it ranks #10: This rebuilt GT40P assembly is listed for a 302 5.0L and includes rocker arms, but its material is not identified as aluminum.
A rebuilt factory OEM GT40P head that includes rocker arms gives this Amazon Renewed option a more complete stated package than a bare casting. Its 302 5.0L 4 BAR identity is paired with a refurbishment process covering cleaning, pressure testing, and valve work.
The GT40P 4 BAR angle-plug description and 7/16-inch head-bolt specification are central fitment details for planning the installation. The listing calls this one cylinder head assembly and specifically notes included rocker arms, which can reduce the need to source that component separately. Hot-tank cleaning, pressure testing, new seals, and a valve job describe the remanufacturing workflow; guides and seats are replaced as necessary, rather than stated as universally replaced.
- Rebuilt factory OEM GT40P assembly
- Listed for 302 5.0L 4 BAR applications
- Includes rocker arms
- Pressure-tested and given a valve job
- This listing is for one head assembly, not a pair.
Skip it if you need two rebuilt GT40P heads together; the Generic GT40P1/2 listing supplies a set of two, while this is one assembly.
Consider this for a 302 5.0L builder seeking one rebuilt GT40P assembly with rocker arms included. The single-head quantity and 7/16-inch bolt-hole and angle-plug details are important boundaries for the planned installation.
Full product details
| Brand | Amazon Renewed |
|---|---|
| Item Weight | 30 pounds |
| Item model number | GT40P |
| Manufacturer | Ford |
| Part Number | GT40P |
| Model | Cylinder Head |
| Special Features | Includes Rocker Arms |
Listed on Amazon as: REMANUFACTURED Cylinder Head Assembly 302 5.0L 4 BAR GT40P Genuine OEM
View on AmazonBare Heads Can Hide a Build-Completion Gap
A bare head is not a bolt-on assembly, so its listed fitment and port figures do not tell you what additional parts or machine work your build needs. The IMOOA, Weonefit, GELUOXI, and Mixizap bare products describe heads with valves and guide-related specifications, but do not list complete installed valvetrains. PUFFIS is especially explicit: its single bare head excludes valves, springs, retainers, locks, rocker arm studs, and guide plates.
That distinction affects both parts planning and whether you are buying one head or a pair. Before ordering, confirm what the package contains and whether your existing hardware is suitable.
A listing that says compatible with a 302 does not establish that the head is ready for installation, that it matches your cam, or that it clears the rest of your engine combination.
GT40P Fitment Is Not the Same as Aluminum Fitment
A GT40P head can be a 302-fitment option without being an aluminum head. Both remanufactured GT40P listings describe Ford factory OEM heads for a 5.0L 302, with cleaning, pressure testing, valve work, and replacement of selected parts as needed. Neither identifies aluminum construction, so they should not be treated as equivalents to the aluminum choices in an aluminum-head comparison.
The two listings also differ in package format: one is a set of two rebuilt heads, while the Amazon Renewed listing is a single assembly and specifies rocker arms. GT40P listings mention 7/16-inch head bolt holes, an important detail to verify against your engine hardware.
Check the exact casting and configuration, including spark-plug arrangement, before purchase; the pair listing describes angle plugs. Fitment labels alone do not resolve those installation details.
How to Choose Aluminum Heads for a 302
Bare or assembled configuration
Choose the assembly level that matches your parts and installation plan. The Ford Racing M-6049-Z304DA7 is assembled and lists valves, springs, retainers, and locks; Speedmaster also lists an assembled head with springs and valves installed. Mixizap’s assembled pair is another option, though the supplied details do not itemize its installed valvetrain.
By contrast, the IMOOA, Weonefit, GELUOXI, and Mixizap 185cc listings are bare heads. PUFFIS explicitly excludes multiple valvetrain parts and supplies one head only.
Buyers reusing compatible hardware may prefer bare heads; those seeking fewer assembly steps should investigate an assembled product and verify exactly which components are included.
Chamber and runner dimensions
Match chamber and runner figures to your intended engine combination rather than choosing the largest number by default. Listed aluminum chambers run from 61cc on the IMOOA, Weonefit, GELUOXI, and Mixizap bare heads to 64cc on the Mixizap assembled pair and PUFFIS bare head; Speedmaster lists 62cc. Intake runners range from 175cc–185cc on several products to 210cc on Speedmaster.
Smaller or larger figures alone do not establish the right compression or performance for your build. Buyers whose combination calls for the listed 61cc/185cc specification can compare the bare pairs; a racing-oriented buyer seeking a larger listed runner may consider Speedmaster, subject to its racing-only restriction.
Pair quantity and engine fitment
Confirm both the engine fitment and the number of heads in the package before ordering. Several listings expressly name Ford 289, 302, 351W, and 5.0L applications, while Ford Racing lists 302/351 Windsor fitment. Most bare-pair products state a pair is included, but PUFFIS explicitly supplies one bare head only.
The remanufactured GT40P options are also distinct: one is a set of two, while the other is a single assembly. A buyer replacing both sides should favor a clearly identified pair and verify the exact engine configuration.
A one-head listing may suit a single replacement, but only after confirming the matching head and required hardware.
Which Aluminum Heads Should You Choose for a 302?
For a broadly specified assembled aluminum choice, start with Ford Racing M-6049-Z304DA7: it lists 302/351 Windsor fitment and includes valves and valvetrain components. If your build is racing-only and calls for the largest listed intake runner, consider Speedmaster PCE281.2049, with 210cc runners and 62cc chambers; its listing says not for street use. For an assembled pair with 175cc–185cc runners, Mixizap Assembled SBF Heads is a listed alternative.
If you plan to supply and install components yourself, compare IMOOA 185cc Bare Pair, Weonefit 185cc Bare Pair, and GELUOXI 185cc Bare Pair. PUFFIS 64cc Bare Head supplies one bare head, not a pair.
Choose a GT40P remanufactured product only if OEM-style fitment matters more than the aluminum requirement.
Frequently Asked Questions
How do I confirm that an aluminum head will clear my pistons and fit my 302's block?
Check the head listing against your exact block and engine combination, then verify piston-to-valve clearance with your pistons, cam, and valvetrain. Confirm chamber and valve details too; matching a 302 fitment label alone does not establish clearance or compatibility with every setup. Have a qualified machinist check measurements before assembly.
What valvetrain parts and machine work should I plan for with a bare cylinder head?
Plan to confirm which components are included, since a bare head may need valves, springs, retainers, and locks, plus assembly. Check the head’s guides, seats, and surfaces, and determine whether machining is needed for your parts and setup. Ask your machinist to inspect and prepare the head before installation.
How do chamber volume and intake runner volume affect a 302 street or racing build?
Chamber volume is one factor in compression ratio, while intake runner volume influences how the head suits the engine’s airflow and intended use. Compare both figures with your engine, cam, and driving purpose rather than choosing the largest runner automatically. The 210cc/62cc listing specifically says it is not for street use.
Is an assembled head a better choice than a bare head?
An assembled head can reduce the parts and assembly work you need to arrange, but verify its included components and compatibility with your cam. The Ford Racing M-6049-Z304DA7 is listed assembled with valves, springs, retainers, and locks. Bare options may suit a build where you plan to supply and install components yourself.
Should I consider a GT40P head if I require aluminum?
No, not if aluminum construction is a firm requirement: the listed GT40P choices are remanufactured OEM products, while the roundup identifies them as alternatives only when OEM-style fitment matters more. Compare aluminum options instead, and verify the selected head’s fitment and specifications against your exact engine and cam setup.
Final Words
For a broadly specified assembled aluminum choice, start with the Ford Racing M-6049-Z304DA7, then confirm its fitment and valvetrain compatibility with your engine and cam. A racing-only build calling for the largest listed intake runner points to the Speedmaster 210cc/62cc option, whose listing says it is not for street use. Choose a bare pair only if you plan to supply and install components; consider GT40P only when OEM-style fitment takes priority over aluminum.
