IT_SS

iTrader: (5)

What other GM exhaust manifolds can be used for a diy fab that won't require the manifolds to face forward?

ninetres

iTrader: (35)

Ahhhh.... any of them? Just fab it up!

tpunk

iTrader: (8)

Any of them. The beauty of the truck manifolds was they put the turbo in front for easy plumbing. If you are trying to get the most out of a setup you would be hard pressed to beat the truck manifolds let alone for the money. They are cast iron so they will hold up and retain heat to the turbo better than damn near anything, they are cheap and easy to find, and the install is pretty simple to fab from. As long as you don't mind losing the AC it's a great option. If you don't want to lose the AC then you will really want to look at getting some turbo manifolds like APS has to fab from or go the cheapest easiest lower performance rout and go rear mount. Rear mount is absolutely not the best but it will do enough for most DD cars from what I've see.

Jimmy P

iTrader: (177)

Stainlessworks has some prety nice ones, but they are $1000.

tpunk

iTrader: (8)

That they do. Also I read somewhere that you can use a C6 manifold on the passenger side and if you are creative you can get under the AC compressor and then meet up with the truck manifold in the middle but I haven't seen any good pics of this to see how well that would work.

IT_SS

iTrader: (5)

What do the diy rear mount/sts guys usually run? Lths?

Josh@KY-Turbo

iTrader: (120)

Based around the BMR Turbo K-Member

IT_SS

iTrader: (5)

That's beautiful...

XtremeDime

iTrader: (16)

Where can I buy that crossover pipe??

smokinHawk

iTrader: (48)

the vette manifolds point down and not forward if that is what you are asking or wanting to use to fab.

IT_SS

iTrader: (5)

LS2 or LS3? I would like to retain cats

lifeisgood

iTrader: (4)

why in the world do you want cats?

IT_SS

iTrader: (5)

to gut and throw off johnny law, I know people who's cars have 30 holds & modifed exhaust tickets. They don't sniff, but they do look

XtremeDime

iTrader: (16)

In general turbos arent CARB legal, im sorry but the turbo will be the biggest giveaway regardless if you have cats

tpunk

iTrader: (8)

If they just look then you can just shove a tube through them and weld it up so it looks like there is a car but in reality it's a smooth run... or just gut it, either way. I don't think there is a carb certified turbo kit for our cars.

smokinHawk

iTrader: (48)

i think those manafolds are the same but not 100% sure, the ls7 and what ever one the super charged one is, has longer runners and larger, so it wont work as well as the C5 or C6 vettes.

TurboAv

iTrader: (6)

The C6 vette manifolds for the LS2's and LS3's are kind of like old ram horn exhaust manifolds. They dump in the center. They do have a slight backward angle to them when installed normally. There is a guy on the LS2GTO board that is using them pointed forward for twins. I'm also going to do the same thing.

gnx7

iTrader: (28)

The Ohio boys have also gone 200mph+ with truck manifolds.... so I'd say they work. They also fabbed up some tubular headers and didn't see any improvement.....

Not saying other stock cast manifolds don't.... but those are certainly proven time and time again.