c301 build

johninmn · Dec 15, 2013

Lets start by saying this is a true 301 not a smaller block with sleeves removed. That said I have several questions....
1. Is 4 inch bore safe or will it get thin in the cylinder bores?
2. What is an attainable horsepower number without stroking?
3. Is an offset grind with c rods a reliable build?
4. What's the biggest stroke you can get before a lot of grinding in the block is required?

Thanks all
John

Anonymous-0 · Dec 16, 2013

I bought a motor with 4 inch bore and 5.5 inch stroke and it still runs water in it. Been running for over 10 years. I would suggest you get the block checked for thickness before boring it. A large stroke requires considerable grinding for clearance with the cam and block.

Snot Nosed Kid · Dec 17, 2013

I built a 460 using that same block. I used 318 Chrysler pistons(3.91 bore) stock rods and stroked the crank to 5 inches even. Made 361 cubes. Ended up milling .080 off the pistons. Required extensive grinding on the cam, block,and rods. Motor ran great. Hold third on the high side with 16.9 BFG radials up to 7000. I do know of quite a few 4.00 inch bores still tuning water though. My two cents would be do the 4 inch bore and stroke it 1/2 or less if at all.

c301 build

johninmn

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Anonymous-0

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Snot Nosed Kid

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