Okay The mahle pistons I am looking at say a 3.500 stroke. I plan on buying a scat or eagle forged crank. And Forged 5.7inch Rods (scat or eagle)

Does it matter if I get a 3.480 or a 3.500?

Its going to be a forged 355 build.

Thanks Jay

 

3.5 will give you a 357 and a little higher compression. I have had 3 motors with 3.5 stroke and no problems, just run your numbers first.

Stock is a 3.48.

If you have a choice get the stock one, if not I have bought mine as kits and for some reason the 3.5 is always way cheaper.

 

doesn't really matter. as long as the piston fits the rod length

 

So i can have a 3.480 crank....a 5.7 inch rod with a 5.7 piston (with a 3.5 stroke and its okay)

Jay

 

Yes, I know of people doing just that. However they are also figuring in their quench, compression ratio etc. That way they hardly have to deck the block if at all depending on the situation and get a little extra power.

 

if your piston is .025" down in the hole with a 3.48" stroke, it would be about .015" down in the hole with a 3.5" stroke. couple that with a Mr Gasket .026" thick head gasket and you got a nice .041" quench without decking the block. that would put your compression at about 11.2 with stock heads.

 

Shoulda added that they are -26CC pistons for boost :P

So just to verify i can use a 3.480 crank with a 3.500 piston without issues if the rods are corrects?

Jay

 

Let me know if these people are getting a 1-piece rear crank (3.500" stroke). I've been looking for a crankshaft like that, (no luck in finding).

Karl Ellwein