Vetal

iTrader: (3)

As title says... Truck manifolds have very different diameter openings, difference in area is 40% which is quite a lot and will cause difference in backpressure and respectively EGT.
Do you guys enlarge the smaller one, or do you just ignore this?

phoenix

iTrader: (6)

subscribing.

LS1Silverado05

iTrader: (41)

I too would like to know this...and what is the reason for it like that in the first place??

Lopoetve

iTrader: (1)

Dot for me too

wilson34

iTrader: (7)

yessirrrr

Vetal

iTrader: (3)

yes, and that too...

smokinHawk

iTrader: (48)

i dont think anyone has had a problem with them that way

Denali08

I think Josh of KY Turbo will chime in. He is the truck manifold turbo guru.

I don't think some good porting will hurt.

BlwnLs1GTO

iTrader: (12)

I have a set of these and was wondering the same thing. I was just planning on opening
the other side up a little. Mine is about 1/4" difference between the two.

Vetal

iTrader: (3)

I think that's partly because you can't really see/measure problems caused by these manifolds. But if 2 banks breathe differently, I'd say it can't be good. Didn't anyone ever burn passenger-side pistons? Wasn't it partly due to higher EGT in this bank?
I hope some gurus will shed some light

Beaflag VonRathburg

iTrader: (176)

I'm sure you would want them to flow evenly. I wonder how many people actually have touched them though. I've never heard of anyone openly saying they ported them.

frcefed98

iTrader: (16)

Ohio boys have been to over 1000rwhp on em....and into the low 8's or high 7's on em, can't remember exactly.

I think you will be fine.

Vetal

iTrader: (3)

What size pipes to turbo (TC78) do you think I should use for maximum top-end power?