
First one regards the block itself. it's a 1275 S one that's been bored +60. However I can't seem to find a measurement for the block height to check whether / how much its been decked in the past. I did look on here but could only find measurements for 1071 or 970 so wondered if someone could tell me how much taller mine should be?
The other question regards piston choice. The head I've got is an old miglia one with a 17.3cc chamber capacity and I'm wondering if I'll get away with using P21253's or not? An alleged expert reckoned Id need pistons with a slightly bigger (10cc from memory) dish in them, but as he couldn't be arsed to finish our conversation and hung up on me I'm disinclined to take his word for it

Cam choice is currently 649 with 1.5 ratio roller rockers though I'm open to suggestions, this is just what I happen to have in stock!
I'm awarethis is going to need measuring properly when I dry build it but if someone could point me in the right direction before I spend money on all the wrong parts I'd be grateful
