Max compression LS3 stock cam
#1
Max compression LS3 stock cam
Can someone tell me what the max safe static compression is on an LS3 with stock cam? I know I don't want more than 8.7 DCR but can't find stock cam abdc at 0.004 to calculate it.
Also stock ls3 is 10.7 SCR, but when I use the following in a calculator I get 10.9. What am I doing wrong?
bore 4.065
stroke 3.622
gasket 0.051
heads 68.5 cc (a few sources say 70 but numerous people claim to have measured at 68.5)
deck clearance 0.006 (entered as -0.006 since out of hole)
pistons 0 (stock pistons flat top)
thanks
Also stock ls3 is 10.7 SCR, but when I use the following in a calculator I get 10.9. What am I doing wrong?
bore 4.065
stroke 3.622
gasket 0.051
heads 68.5 cc (a few sources say 70 but numerous people claim to have measured at 68.5)
deck clearance 0.006 (entered as -0.006 since out of hole)
pistons 0 (stock pistons flat top)
thanks
#2
TECH Addict
iTrader: (7)
Can someone tell me what the max safe static compression is on an LS3 with stock cam? I know I don't want more than 8.7 DCR but can't find stock cam abdc at 0.004 to calculate it.
Also stock ls3 is 10.7 SCR, but when I use the following in a calculator I get 10.9. What am I doing wrong?
bore 4.065
stroke 3.622
gasket 0.051
heads 68.5 cc (a few sources say 70 but numerous people claim to have measured at 68.5)
deck clearance 0.006 (entered as -0.006 since out of hole)
pistons 0 (stock pistons flat top)
thanks
Also stock ls3 is 10.7 SCR, but when I use the following in a calculator I get 10.9. What am I doing wrong?
bore 4.065
stroke 3.622
gasket 0.051
heads 68.5 cc (a few sources say 70 but numerous people claim to have measured at 68.5)
deck clearance 0.006 (entered as -0.006 since out of hole)
pistons 0 (stock pistons flat top)
thanks
Also, did you calculate that SCR with 68.5cc combustion chambers or with 68.5cc chambers.
I ask because if GM says the LS3 is 10.7:1, and if GM says the chambers for the LS3 is 70cc, then maybe THEY calculated using the 70cc measurement.
Best of luck!!
KW