LM7 Turbo Guys: Talk to me about 10:1, slight mill, thinner headgaskets
08-23-2015, 11:58 PM
#11
Yes. I have sent a few set of heads in and never had to replace the guides. Even the one's I have sent out to richard at WCCH for CNC porting and that guy is by the book!
Every once in a while a few valves on stock rebuild stuff but usually the guides are still good.
Every once in a while a few valves on stock rebuild stuff but usually the guides are still good.
08-24-2015, 02:50 AM
#12
WCCH is obviously the go-to for the c6z guys so if they're good enough for them it's good enough for me. I have to put the btr springs so I'll do a wiggle test on each stem while I'm at it. My whole theme for this build is a. stealth and b. keeping the truck on the road.
08-26-2015, 07:24 PM
#13
TECH Apprentice
on the lm7 stock gasket is .051" thick. i would go with the thinner gasket first as it helps with better quench over a full mill to get higher compression.
going from a .051" --> .041" nets about a .2 compression with 62cc chambers
general milling the head .0065" = -1cc
you will want to aim to get around 60.5cc to get that 10:1 compression. although the best option would to get some flat top pistons and some 799/243 heads
going from a .051" --> .041" nets about a .2 compression with 62cc chambers
general milling the head .0065" = -1cc
you will want to aim to get around 60.5cc to get that 10:1 compression. although the best option would to get some flat top pistons and some 799/243 heads
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