Blower cam difference for L92/L76?
Thread Starter
TECH Enthusiast
Joined: Dec 2001
Posts: 548
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From: Dublin, CA
I also have a set of stage 2 ported LS1 A&A/WCCR heads.
Comparing the two at .600" lift:
Exhaust
Stage 2 LS1 3.905" bore . . . 222.6
Stock LS3 4.030" bore . . . . 214.6 ... -8cfm
Intake
Stage 2 LS1 3.905" bore . . . 291.8
Stock LS3 4.030" bore . . . . 328.7 ... +36.9
FWIW -The port surfaces of the LS3 heads are like 80 grit. I've smoothed the exhaust port surfaces with sanding rolls on a die grinder, but haven't touched the intake ports and I haven't changed the shape of the exhaust ports.
Comparing the two at .600" lift:
Exhaust
Stage 2 LS1 3.905" bore . . . 222.6
Stock LS3 4.030" bore . . . . 214.6 ... -8cfm
Intake
Stage 2 LS1 3.905" bore . . . 291.8
Stock LS3 4.030" bore . . . . 328.7 ... +36.9
FWIW -The port surfaces of the LS3 heads are like 80 grit. I've smoothed the exhaust port surfaces with sanding rolls on a die grinder, but haven't touched the intake ports and I haven't changed the shape of the exhaust ports.
