Max Boost on a LQ4???
Thread Starter
Teching In
Joined: Aug 2007
Posts: 47
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From: Greenville, South Carolina
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?
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.
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.
