382ci ls1 build
01-24-2017, 08:54 AM
#22
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What does your compression calculate out to? I'm really surprised power carried that far and flat-lined that far past 6,000 rpm's with the LS6 intake and stock TB. That thing is really begging for a FAST setup. I'm hoping with my ported FAST 90 that I'll go from 447 rwhp to 470 rwhp+. My LS6 intake and stock TB is a major restriction at this point.
OP was smart enough to cam the motor accordingly, using piston velocity to get more flow out of the LS6 intake vs the 346. It still peaked early, though. With a bigger intake, the peak would extend out past 6500 vs the 6000-6200 it peaked at already. But honestly, if he's already looking into Nitrous, vs the 20-30 hp he'd get from an intake, the nitrous is better HP/$
01-24-2017, 11:06 AM
#23
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What does your compression calculate out to? I'm really surprised power carried that far and flat-lined that far past 6,000 rpm's with the LS6 intake and stock TB. That thing is really begging for a FAST setup. I'm hoping with my ported FAST 90 that I'll go from 447 rwhp to 470 rwhp+. My LS6 intake and stock TB is a major restriction at this point.
01-24-2017, 11:08 AM
#24
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His cam is the reason it does so well. So many people make the mistake of using the same cam and everything on a 383 as you would for a 346, and it ends up falling over after making more torque, but making the same power.
OP was smart enough to cam the motor accordingly, using piston velocity to get more flow out of the LS6 intake vs the 346. It still peaked early, though. With a bigger intake, the peak would extend out past 6500 vs the 6000-6200 it peaked at already. But honestly, if he's already looking into Nitrous, vs the 20-30 hp he'd get from an intake, the nitrous is better HP/$
OP was smart enough to cam the motor accordingly, using piston velocity to get more flow out of the LS6 intake vs the 346. It still peaked early, though. With a bigger intake, the peak would extend out past 6500 vs the 6000-6200 it peaked at already. But honestly, if he's already looking into Nitrous, vs the 20-30 hp he'd get from an intake, the nitrous is better HP/$