What stroke?????

I have a 10.2 deck BBC 4.500 bore. I will be running a 1471 blower for now, I will get a better blower when I can. What stroke would you guys go with. This is an old PM motor and had a 4.375 in it. Would I be better to put back the same 557CI, or shorten the stroke for less CI's?????? Thanks

 

Ive had pretty good luck with a 4.25 in a chevy. However Ive always wanted to try a 4.75 (600+cid) with a good 14/71. Either way cant go wrong. Just use good rods, Hemi pins and good Pistons. Good Luck.

 

crank

4.25 is the strongest and fastest for a chevy.

 

stroke

Just remember, The longer the stroke the farther away from the centerline. Also you DO NOT need all that torque. It will just give you more problems. Don

 

So what stroke would you suggest?

 

What is the application?

 

3200 lb, 29x10.5 with glide

 

crank

I would say 4.250/ or 4.125 But they seem to like the 4.25 stroke. Don

 

If this is a non cross bolted style block, I would use a 4" stroke with a long rod. You can good ring setup with a 1.395 comp distance and a 1.094 pin. Use a 6.790 rod with plenty of material over the pin and around the bearing without having having to have a cam notch. You can make any combo run fast but the trick is to have one that last long enough to get it there.

 

Heavier cars like more stroke.....Yeah, Thats what she said too.