what up guys.....ihave been doing research on how much to mill my heads, i have found that people mill them from 30 to 55.....what would be good to mill these for my truck....im trying to get to like 10.5 or 11.1 cr....whats the cr on this stock trucks....what gasket will i need to use and size pushrods.?

 

i read somewhere it was 10.1 CR for the stock trucks... 11.1 should be great, lemme know how it goes, I wanna do this as well

 

11:1 is getting close to needing good gas all the time, just depends how locked down the tune is at that point...

 

well i always use shell 93 octane.....so im always bout the good gas ! if we have 10.1 cr how much am i supposed to mill my heads.???? 45 tenths or what ???? i want to get that donde this week ill let u guys know ! i also want to get them fully ported, i was thinking about bigger valves but i heard we have 2.0 valves already is this true?? how about exhaust valves what size are those ?

 

you're probably not going to be able to make the valves bigger without going to a larger bore.

 

ok so valves can stay the same just port and polish the heads....and get them milled but how much do i have to milled them to get 11.1 cr...? and what push rods am i gonna need ?

 

im also planning on using the torquer v2 or v3.....will there be any clearance issue ?

 

you will need to shorten your pushrod the same amount that you mill off the head. you'll have to talk to a machine shop to determine how much needs to be milled off of them to achieve your desired compression ratio. you'll have to measure with the cam to determine any clearance issues... or call TSP, they may have an idea.

 

ok ill talk to a machine shop....but whats the correct cr on this things 9.9 or 10.1 ???? i have gotten diffrent ones !!! and the heads are 64 cc right ?

 

Gm says 9.9:1 and yeah 64cc chambers