Does anyone know if I would have any problems running a .030, 5.7" Rod, 3.75" stroke piston, on a stock (3.48") stroke?

 

well yeah, you would need different sized rods. like .27inches shorter.

 

So the wrist pins are in a different location? I was thinking that it would work because the stroke is smaller with the same rod length.

 

Well the stroke has to come from somewhere. If rod length is the same and the piston has to move an extra .27 inches.....that would put a pretty good dent in your cylinder heads

 

You have it backwards. A 383 piston is shorter assuming the same length rod is used.

The stroke difference of 3.48 vs. 3.75 is .27"
1/2 the stroke is .135". This is how much shorter the 383 piston is.

A 383 piston will not make much compression in a 350 for this reason, nor is it recommended to do this. You either need a different piston or a longer rod (+.135")

For comparison, a stock 400 (where the 383 stroker crank originally came from) uses rods which are .135 shorter & a piston of the same compression height as a 350.

Hope this helps.

 

Thanks Lonnie, that's what I was looking for.