LS2 and LS7 Exhaust Systems

[Swiss_Toni]

Do LS2 and LS7's use the same style of exhaust headers, etc?

[UltimaCH]

A mine of info here: http://ls1tech.com/forums/ls1-ls2-ls3-ls6-ls7-perf...

[ROWDYRENAULT]

No the exhaust port is a different shape and I believe that the exhaust flange is at a different angle. Lee

[tinker-27]

they are the same fitting flange,the portis different but the header is full round and the port has a flat bottom,

[Boosted LS1]

^ As in a 'D' port. Lsx flanges, ports and bolt fixtures are the same across the range.

[738 driver]

As Lee states, heads between differing LS varients have different face angles, so irrespective of similar port shapes and common mounting bolt patterns, a full header/silencer system may not be a straight-swap fit for your application.

Edited by 738 driver on Saturday 9th January 13:05

[ezakimak]

http://blogs.insideline.com/straightline/2009/12/m...

theres a few pictures hear

:P

[ROWDYRENAULT]

I made a mistake, I was thinking of the inlet port not the exhaust but the face angle remains the same problem between a LS1 or2 vs a LS7. yes the bolt pattern on all of them is the same it would bolt up but be at a different angle. Sorry for the mistake. Lee

[Boosted LS1]

I'm pretty certain the inlet ports are located higher up the face on the ls7 because I screwed up once when making a cast plenum and had to re-jig it before final assembly

[Swiss_Toni]

Interesting, the engine builder says that the current exhaust will fit HOWEVER, it will not be optimal and as result there will be HP loss.