Max Boost on a LQ4???
05-24-2008, 08:25 AM
#1
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Max Boost on a LQ4??? What is the max boost that is being run on the LS based engines? I read some as low as 12 and some as high as 30. I have a iron block studed 408 4340 crank and rods,Tea stage 3 truck heads,E85 blow thru 750 carb, twin T-70s. What is max boost before head lift?
05-26-2008, 09:36 PM
#3
Very hard to determine. It is really going to boil down to tuning and octane used. I have seen people lift heads at 12lbs and some that do not lift the heads until 24lbs plus. I think the biggest variable will be your tuning and octane used. Besides each car is different. Just start low and work your way up.
07-21-2008, 10:12 PM
#4
Very hard to determine. It is really going to boil down to tuning and octane used. I have seen people lift heads at 12lbs and some that do not lift the heads until 24lbs plus. I think the biggest variable will be your tuning and octane used. Besides each car is different. Just start low and work your way up.
