Whats the difference?

[FASTL61]

I just want to know the difference in my 2007 L61 exhaust manifold and my 2006 LSJ exhaust manifold other than the o2 bung?Collectors are the same but what about the runners?If those are bigger in the LSJ then ill run that then I have an extra o2 bung for wideband.Any one know for sure?

---------- Post added at 08:58 PM ---------- Previous post was at 07:38 PM ----------

bump

[Cobalt Tom]

never seen two next to each other, but i would imagine your ported one is better then the lsj...

[FASTL61]

thats what i figured but i thought maybe the runners were a little larger?I dunno i just have this thing laying around lol

[Cobalt Tom]

as far as i know, from 07 forward, they are pretty much if not the same.

[ionit3]

theres no difference sept the o2 and if urs is ported ur good

[Jn2]

03-06: the outlet on the manifolf i only a D shape
07: the outlet is a full O vs the older D shape

primaries/collector are the same...

LSJ has slightly bigger primaries and O outlet than any l61, a upgrade from the 06 l61 to the 07 l61 manifold is a upgrade, but ho nestly, unless its free, go with a a LSJ instead...and on some 07 the front o2 was located on the DP vs the exhaust manifold itself, this is not on all...just some...so that would require u to either have a o2 bung welded on your DP or get the dp from the 07 the manifold came from aswell...u can weld a o2 on the manifold bc its cast iron, welding on cast iron is FTL...

[Cobalt Tom]

and if i hadnt heard from you before that you were broke, i would just say aftermarket>all stock setups lol

[Jn2]

Originally Posted by Cobalt Tom and if i hadnt heard from you before that you were broke, i would just say aftermarket>all stock setups lol

true although on a full lsj exhaust it helped me go from running 16.3@85 to running 15.7@89 lol, only gained about 17.9wtrq...and 8hp...

[FASTL61]

ya both o2s are on the DP.I might as well leave it how it is.Ill just have to save for a header/dp combo and a tune then see what she does.hopefully low low 15's.like 15.1 would be awesome

[Jn2]

i have a 07 exhaust mani sitting in my attic right now been trying to get rid of for sometime now got rid of the other lsj ones i had