Ford Stroker Engine Sizes: 302, 351W, 351C and 460

A Ford stroker raises displacement by fitting a longer-stroke crank, usually with a small overbore. A stroker kit includes the crank, rods, pistons, rings and bearings. The kits we list run from 331 and 347 on the 289/302 block, through 408 on the 351 Windsor and 427 on aftermarket 351-family blocks, 393 on the 351 Cleveland, up to 545 on the 429/460 big block. The table below gives the bore, stroke and rod length from each manufacturer listing.

Key takeaways

  • 289/302 family: 331 (3.250 in stroke) and 347 (3.400 in stroke), both on a 4.030 in bore with 5.400 in rods.
  • 351 Windsor: 408 (4.030 x 4.000, stock block). 427 (4.125 x 4.000) needs an aftermarket 9.500 in deck block with 2.750 in Cleveland-size mains.
  • 351 Cleveland: 393 (4.030 in bore, 3.850 in stroke, 6.000 in rods).
  • 429/460: 545 (4.390 in bore, 4.500 in stroke, 6.700 in rods).
  • Pick by block first, then use, power adder and balance.

Ford stroker sizes chart

Displacement = bore x bore x 0.7854 x stroke x 8, rounded. Specs are from each manufacturer listing on our store. "Not listed" means we do not list a kit in that size today.
Size Engine family Bore Stroke Rod length Kits we list
331 289/302 4.030 in 3.250 in 5.400 in Scat 1-94055, Scat 1-94055BE, Eagle 14006030
347 289/302 4.030 in 3.400 in 5.400 in Eagle 14003030, Eagle 16003030, Scat 1-94160, Scat 1-94165
348 289/302 4.040 in 3.400 in 5.400 in Eagle 16003040
363 302 family, larger-bore block not listed not listed not listed not listed
393W 351 Windsor not listed not listed not listed not listed
408W 351 Windsor 4.030 in 4.000 in 6.200 in (Scat 1-94306), 6.250 in (Eagle 14129030) Scat 1-94306, Eagle 14129030
427W 351W-type aftermarket block, 2.750 in mains 4.125 in 4.000 in 6.250 in Scat 1-46580BI
393C 351 Cleveland 4.030 in 3.850 in 6.000 in Eagle 16800030
545 429/460 4.390 in 4.500 in 6.700 in Eagle 15012030, Scat 1-95105BE

How to choose a Ford stroker kit

  1. Identify your block. A 289/302 block takes the 331 and 347 kits; a stock 351 Windsor takes the 408; the 427 needs an aftermarket block with 2.750 in mains; a 351 Cleveland takes the 393; a 429/460 takes the 545.
  2. Check the bore. Most kits here use a 4.030 in bore (a stock 4.000 in bore taken .030 in over). The 427W kit needs an aftermarket block with a 4.125 in bore, 9.500 in deck and 2.750 in Cleveland-size mains, so ask us about the block before you order it.
  3. Decide on use and power adder. Each listing names its crank (cast or forged) and pistons (forged or hypereutectic). Planning a power adder? Tell us before you pick.
  4. Check balance. Scat 1-94055BE (external balance, flexplate and balancer included), Scat 1-95105BE (external balance, flexplate included) and Scat 1-46580BI (internal balance) are listed as balanced. Where a listing does not say balanced, plan to have the assembly balanced before it goes in.
  5. Have the block checked. A longer stroke can need block and rod-to-cam clearance. Have your machine shop check clearances before assembly.
  6. Send us your combo. We'll confirm the kit before you buy.

Frequently asked questions

What sizes of Ford stroker are there?

On our store today: 331 and 347 (plus a 348) for the 289/302 family, 408 for the 351 Windsor and 427 for aftermarket 351-family blocks, 393 for the 351 Cleveland, and 545 for the 429/460. The size depends on the block's bore and the crank's stroke.

What is the biggest stroker for a 302 block?

Among the 302-family kits we list, the largest is 348 ci (Eagle 16003040: 4.040 in bore, 3.400 in stroke; 348.7 ci by the formula). The 347 kits use the same 3.400 in stroke with a 4.030 in bore. Bigger 302-family sizes need a bigger overbore or a larger-bore aftermarket block (for example a 363 on a 4.125 in bore), and we don't list those kits today.

How do I choose a Ford stroker kit?

Start with the block you have (289/302, 351W, 351C or 429/460) and its bore, then decide how the car will be used, whether you plan a power adder, and whether the kit must be balanced. Check each listing for crank and piston material (cast, forged or hypereutectic) and rod length, then send us your combo and we'll confirm the kit.

What is a 408 Windsor?

A 408 Windsor is a 351 Windsor block bored to 4.030 in with a 4.000 in stroke crank, which works out to about 408 ci. We list it as Scat 1-94306 (6.200 in rods) and Eagle 14129030 (6.250 in rods).

Ask a Coast High Ford builder

Ford strokers are what we build. Send your engine, goal and transmission, and a Coast High builder will get back to you. Or call 310-784-1010.

We'll use your details only to answer this request.

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Written by the Coast High Performance tech team. Checked by CHPTech Nov 4, 2026. Last updated November 4, 2026. Specs come from each manufacturer listing on our store. Questions? Call 310-784-1010.

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