SUTTERERMAN85

iTrader: (42)

ok stock pistons and i a going to be putting on some 243's i have a 228/232 .588/.574 112+4. i want my compression to be 10.9-11.0 how do i need to mill and still have enough valve clearnce. i am also be using stock gaskets. thanks for the help. also if anyone could help me find out my DCR that would great. how much will the DCR change with almost a whole point increase in SCR. thanks
nick

GuitsBoy

iTrader: (4)

Its not possible to tell without measuring. Stock LS6 heads start as 65cc chambers. figure every .007 you mill drops the chamber volume by 1 cc. Without measuring, you cant tell how much space you have P to V. Use this page to calculate your SCR / DCR: http://www.kb-silvolite.com/calc.php?action=comp

Brian Tooley Racing

iTrader: (13)

If your heads have stock valves then the valve drop should be .150", you should be able to mill them .030" to get them to 61cc and still have enough P to V. We have run our 5.3 heads with 2.02 valves and a valve drop of .100" with that cam.

SUTTERERMAN85

iTrader: (42)

ok thanks guys

SUTTERERMAN85

iTrader: (42)

well i got some LS6 milled .018" and i will be using stock LS1 gaskets. am i going to have PTV clearance probs you think or not. i know that you said its not really possible with out measuring but i guess what i really want to know how tight my cam is before i milled them. anybody have an idea?? thanks

redtail2426

iTrader: (10)

i have a 228/230 cam with stock ls6 heads milled .018 and a cometic .045 gasket.I have .085" intake clearance and .135" exhaust,stock block etc..you should be fine,but check it because if your cam is not degreed or has a lot of advance ground in then you might be close on the intake..I have a 112 lsa with 2 * advance

redtail2426

iTrader: (10)

just saw your sig,with a 112 + 4 and stock gaskets it should definitly fit,check it anyways and see how close it is,and then get back to us with numbers as i am curious..

SUTTERERMAN85

iTrader: (42)

it will be 2 weeks prob but i will let you