Tech Articles

Ford Engine Bore and Stroke Guide


The folks at Kiwi Customs built a stroked Ford 460 big block for their 1966 Mustang SEMA show car. You can read the details here. (Image/Summit Racing)

The Ford engine family tree has a lot of branches.

You’ve got the venerable Windsor small block, plus the 385-series and FE-series big block branches, along with a trio of 351 engines—the 351 Windsor, Cleveland, and Modified. We’re now into the overhead-cam Modular motors, which advanced the Ford V8 into the 21st century.

So, we thought it might be helpful to assemble a handy bore and stroke chart to help you understand common displacement configurations.

Then we’ll toss in a Ford stroker chart, so you can see some popular stroker combinations as well.

Ford Engine Bore and Stroke Chart

Ford Stock Engine Bore and Stroke Guide
(Cubic Inches or Liters)
Ford Windsor Family
Ford 335 Family
Ford FE Family
Ford 385 Family
Ford Modular Family
5.0L (Cammer)3.7003.543
5.0L Coyote3.6293.647

Common Ford Stroker Configurations

Ever hear of a 319 Ford small block? How about a 393? Here are some common stroker engines made from the common Windsor small block and the Ford 460 385 series big block.

Ford Stroker Engine Bore and Stroke Guide
Stroked Displacement
(Cubic Inches)

(Cubic Inches)
Stock Bore
3143024.0000.0303023.0755.250• Offset grind crank to 3.075"
• Requires aftermarket rods
• 400 hp maximum
3193024.0000.0303023.1255.400• Offset grind crank to 3.125"
• 500 hp maximum
3313024.0000.0303023.2405.200• Offset grind crank to 3.240"
• Requires aftermarket rods similar to 1.9L 4-cylinder rods
• 400 hp maximum
3373024.0000.0303023.3005.400• Offset grind crank to 3.300"
3423024.0000.0303023.3505.400• Offset grind crank to 3.350"
3473024.0000.0303023.4005.400• Offset grind crank to 3.400"
372351W4.0000.030351W3.6406.200• Offset grind crank to 3.640"
• 600 hp maximum
375351W4.0000.030351W3.6806.125• Offset grind crank to 3.680"
• Requires aftermarket rods
• 575 hp maximum
377351W4.0000.030351W3.7006.200• Offset grind crank to 3.700"
• 550 hp maximum
393351W3.8500.030Aftermarket3.8506.209• Offset grind crank to 3.850"
• Won’t require cylinder bore notching
• No Mallory metal required for balancing
• Uses Chrysler 340/360 rods
5124604.3600.0804604.1456.535, 6.768• Offset grind crank to 4.145"
• Turn rod journals to 2.200" with Big Chrysler 6.535" rod
• Turn rod journals to 2.375" with RB Chrysler 6.768" rod
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  1. Manuel Duke says:

    You left one out . 400 sister to the 351M .

  2. You missed the 332 & 406 in the FE family; the 332 is fairly forgettable, but the 406 was Ford’s early 60s entry in the 3×2 bbl wars!

  3. I think you may want to research a bit more. There is some ‘confusing’ info posted here.
    A couple examples: 351W cranks will not it in an 8.2 deck block (base for 331, 342, 347, 357 and now 363 strokers) and the 393 does not use a 4″ stroke crank from a 400M engine but an aftermarket 3.85″ stroke unit sold through Ford Racing, Scat and others.

  4. You left the 360 out of the FE group

  5. Tom Thompson says:

    you also forgot the 410 in the FE family

  6. Pingback: Ford Stroker Engine Combos

  7. Great collection of info. The offset grinds remind me of the small journal Chevy 327 (a great hot rod motor).

  8. Hey, I’ve got a bronco build and have been doing a lot of research. I’ve got a 351m and was gonna convert it into a 400. After looking at this chart, I was thinking that I could bore it 50 over and put in the 4.050 cylinders from the fence series. Is that how it works?

  9. QuincyThomas says:

    So I’m about to purchase a 302 engine bored at .60 over, which placement would it fall under?

  10. Jerry Richmond says:

    What would a 390 bored 40 over be

    • OnAllCylinders Staff says:

      Well, an FE-series 390 has a 4.050″ bore and a 3.780″ stroke. With a 0.040″ overbore (so, now a 4.090″ bore), your new total displacement would be roughly 397 cubic inches.

  11. I have a 289 bored 30 over so I went with a Comp cam headers an all based on a mild build where do you think my horsepower will average at?

  12. Daniel Wilson says:

    Jeremy….it would be very difficult to give an accurate estimate of power levels based on the few details that you provided about your 289 build. The 289 can make amazing levels of horsepower despite its small displacement when prepared for Super Stock or Modified Production class Drag Racing but the downside is limited longevity mainly because of the extreme rpm levels involved. You did say your build is “mild” and that could mean a number of things.

    There’s a ton of information available online about the specific details of well known factory 289 performance engines that you can compare your 289 build details with. The one most well known is the “K” code hi-po 289 with 271 hp installed in a few different Ford body styles during the sixties. Another is the early Shelby Mustangs with a higher performance 289 with mild performance upgrades producing an advertised 306 horsepower. Check out the similarities between those production engines and your build specifications for a good estimate of your 289’s potential.

    Or post more specific details here about your build and I’m pretty sure someone will provide the information that you seek.

  13. Steven Ward Jr. says:

    You forgot 387 Windsors. A stock 351w block, a 3.85 crank, stock 351w rods, and stock 302 pistons. I’m planning on building one to go into my truck, right now it’s a 302.

  14. Ken van horn says:

    I’m rebuilding my 351w and I have a 400 crank in it with a 4.00″ stoke I had to get a 30 over bore to clean up the cylinders and the rods are stock at 5.956″ my question is what is the cid

  15. You can put a 428 crank in the 427 and have a 447, use to race with them.

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