318 stroker using Scat crank

moper said

As long as you understand you're going to spend more to get this together and running than a 360, that's cool. The combo you have will leave the piston sticking out above deck by .250" or so... You need to get a shorter 318 piston, or a custom piston (which would be my advice). Sure you don't want to just build a 4" stroke or get a 360?

Click to expand...

Corrections are in order here:


New 360 block, plus oil pan, plus crank, plus pistons,
will cost more than,
crank & pistons. Even with mod cost to pistons, which is basically free for me.

As for calculations:

Stock 318:
9.64" block - 6.123" rod - 3.31"/2 stroke - 1.822" piston = 0.040" in the bore

Stroker 318:
9.64" block - 6.123" rod - 3.58"/2 stroke - 1.658" piston = 0.069" in the bore

or is my calculator broken????