hardbodeez

iTrader: (10)

Searched, and can't seem to find any info.

Can someone please tell me the I.D. of the primary side of truck manifolds? Maybe the C6 manifolds as well?

68 SS

iTrader: (23)

Everyone uses 2.5" vbands on them at the collector, I am at work but can get you a measurement on the primary shortly when I get home.

hardbodeez

iTrader: (10)

That would be great, thanks.

RAACCR

LS2/3 C6 manifold ~1.74" i.d.

hardbodeez

iTrader: (10)

That's fantastic, just waiting on the truck sizing.

68 SS

iTrader: (23)

1 1/2" ID on the truck manifold primary.

hardbodeez

iTrader: (10)

Really now. So the people that are using a truck manifold on driver side and a C6 manifold on the passenger side (to keep ac) are using two different sized manifolds.

Good to know. Thanks.

68 SS

iTrader: (23)

Apparently so!

hardbodeez

iTrader: (10)

This is exactly what I thought - that the C6 manifolds were bigger. I'm guessing either it doesn't bother people or they just never thought to check?

K STYLEZ

Dont know if this has been covered at all... noob. And kinda sorta not on the OP's topic.

Anyone else notice the drivers side truck manifold (at the collector) is roughly 2.25" and the pass is 2.6"???

Wow. Crazy. Or did someone swap a tiny one on my motor at some time?

2004 LQ4 6.0 btw.


drivers:

pass:



It was def my intention to use them as turbo manis. There's lots of meat on them, so I'm sure the drivers side could be opened up, but man, that's a good couple of hours with a die grinder. Ewww.

K STYLEZ

No one has ever noticed this? Or am I nuts?

KILLER-LS1

iTrader: (18)

I noticed it too, they are all that way. They each prob flow close to the same though, they couldnt be too-mismatched from the factory on the trucks...

denmah

iTrader: (2)

everyone is too busy making 1000whp on them to care about the quarter inch or less difference.

not to sound too forward lol

K STYLEZ

I guess I'm kind of making sure I didnt have some odd-ball manifold or something...

Still seems really quite odd.

sprayedenali

iTrader: (11)

it does seem odd... but considering these were all engineered and designed by GM they did what they did for a reason.... idk what it is but if they didnt worry about it i wont

68 SS

iTrader: (23)

x2