decking block..questions

[Old Guy with 87 GT]

Originally posted by NotchJohnson
Yeah I knew that number wouldnt be exactly right since you are decking the block, but I figured it would give you some idea.

judging from the chamber equition i should be around 9.5 to one .........educated guess

the difference in bore will change the eqution a bit just in the chambers

but ......having the different pistons ,i'm not sure how much higher in the bore the new ones are as compared to the old ones .....plus i noticed on the stock pistons there was a tiny dish ....the new ones are a striat flat top

from what i gather the deck can't really be milled alot closer since you have to maintain a safe distance and i didn't want the piston above the deck (i've heard of guys bringing the piston up to the gasket thickness.....didn't want to go that close),

i'm not sure the exact numbers (pretty novice at this stuff ) ....but i told him to mill the block as close as you can to the pistons ......whitch should change the compression even if its only like thousants of an inch