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**mongocanfly** · 12-12-2021, 06:16 PM

Not trying to talk you into, or out of it..the engine in my C30 is a stock LQ9 6.0..
I put a set of long tubes on it..
0 hp gain on the dyno...I was expecting 15-20 hp at least..
Just alotta trouble and expense for no gain....
When/if I ever get around to building my AD, the LS3 that's sitting in my shop will probably keep the manifolds on it..it makes 455hp with them on it...but I actually bought a set of headers for it for a 13 Camaro that I was gonna try to make work ..but I used those on the IH..still had to modify them to work on it , even with the really wide frame rails it has

12-12-2021, 06:16 PM	#9
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,598	Re: LS Long Tube Headers? Not trying to talk you into, or out of it..the engine in my C30 is a stock LQ9 6.0.. I put a set of long tubes on it.. 0 hp gain on the dyno...I was expecting 15-20 hp at least.. Just alotta trouble and expense for no gain.... When/if I ever get around to building my AD, the LS3 that's sitting in my shop will probably keep the manifolds on it..it makes 455hp with them on it...but I actually bought a set of headers for it for a 13 Camaro that I was gonna try to make work ..but I used those on the IH..still had to modify them to work on it , even with the really wide frame rails it has __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver Last edited by mongocanfly; 12-12-2021 at 06:25 PM.