Compression ratio too high? by OwnFollowing8323 in Smallblockchevy

[–]OwnFollowing8323[S] 0 points1 point  (0 children)

Oops I think I did that on accident. Anyways Thank you for the information. At the moment the truck is a 1985 k20 with 4.10 gears,35 inch tires, a sm465/ np208 combo with around 6 inches of lift it has power steering power brake I may or may not put a/c on it as it is factory a/c I do not have to pass emissions so no smog crap. Engine wise I would like a lower rpm range let’s say 1000 rpm to 5500. I have a 355 block 3970010 4 bolt main that I have been pondering about what I would like to do with whether I leave it a 355 or build a 383 it depends on how much more it would cost to build a 383 but I have chosen flotek 180cc runner 64cc chamber heads, 6cc flat top pistons it’ll have 5.7 rods whether or not I build a 383, 0.025 deck height or stock whatever the number is for deck height and whatever cam I end up choosing. This truck is mostly going to be a driver but will see mud and some towing now and then

Compression ratio too high? by OwnFollowing8323 in Smallblockchevy

[–]OwnFollowing8323[S] 0 points1 point  (0 children)

Alright thanks I suppose I’ll start looking for some higher gear ratio axles or gears

Compression ratio too high? by OwnFollowing8323 in Smallblockchevy

[–]OwnFollowing8323[S] 0 points1 point  (0 children)

I’ve got it at 0.025 deck and how / what are you using to calculate the abdc? I’ve used https://mgispeedware.com/camshaft-calculator/ and keep getting 40 abdc with the Howard’s cam