In 98-02 ls1 exhaust manifolds.. thought i had a set of flanges found but they came off of a 03 c5 vette and would not work.. also looks like different bolt patterns on driver and passenger side.. any info would be appreciated..
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In 98-02 ls1 exhaust manifolds.. thought i had a set of flanges found but they came off of a 03 c5 vette and would not work.. also looks like different bolt patterns on driver and passenger side.. any info would be appreciated..
Yes, there is a difference in LS1 manifolds. There are camaro/firebird, corvette and GTO styles.
'02 LS1 F-Body into a '92 c1500---
The right side exhaust manafold would not fit. It interfered with the rear upper A-arm mounting bracket.
I purchased an '02 5.3 truck manifold which cleared the bracket.
However:
I had to slot all three mounting holes on the pre-cat for it to bolt up. Pre-cat is stock, off the F-Body 5.7.
Jon