Are 00-02 ls1 exhaust manifolds better than pre 00
11-02-2011, 11:43 PM
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Are 00-02 ls1 exhaust manifolds better than pre 00 Here is the dilemma that i am faced with, i ran across some bbk shorty headers for my 00 z28 for $160 but i heard that 00 and later f bodys come with improved manifolds thus making the hp gain minimal . so if i used the bbk headers will it justify the hp to cost ?? FYI i live in CA so long tubes aren't exactly the best choice for smog 
11-02-2011, 11:59 PM
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Yes, the '00-'02 manifold design was improved, so the gains from shorties would be marginal at best. The gains are pretty small even on the '98-'99 cars too.
