318>390 Stroker.......Your thoughts

Dave81 said
I've read many threads in here and most shout 'go for a 360'. They are rare in the UK and if you find one very expensive to procure. So that's not an option for me. Guy I know paid £3000 just for a block, no heads etc.
Biggest issue is piston choices for the 318/390. Trying to get the comp ratio you want is very hard.

My options are 9.9:1 SCR or 11.5:1 with what I can find.
Shame as ideally I want mid 10s.

Always wanted to keep the 318 as a base, but wanted something to kick me in the back when I romp on it. Cubic inches was my choice to do both.
Click to expand...

Getting from 9.9:1 to mid 10's should not be a stretch... deck the block... shave the heads or a thinner head gasket. Any of the 3 or a combination of them should get you there. I should add if you are stuck in the mud at 9.9:1 you'd likely not notice the difference and you won't have to worry about detonation with that CR.