frcefed98

iTrader: (16)

Is it safe to say that they'll support more HP/power than the LS platform will support up to this point in the LS game?

Classic

iTrader: (3)

As you can see, they are good to well beyond your requirements. Mine did 1150+ in my street car.

Shearer

You and Mike are making a ton of power with the cast manifolds. But that doesn't mean that you will not see gains by switching to a tubular set-up. My $.02.

chasgiv3

iTrader: (1)

Generally when tubular headers are made they make them with less sharp bends and are made with equal length tubes per cylinder for better scavenging.

So yes I'd agree that you would get better numbers. How much better is really the question. Unfortunately it's not that simple. Depending on the Turbocharger design, piping and size you may be gaining almost nothing.

My cast manifolds don't seem to move, sag or need tweaking even with the heat cycling they deal with. If money was no object I'd go tubular.

427

iTrader: (3)

Some of the biggest gains with tubular headers would probably be in na power, making it faster at spooling the turbo when staging. I am on the fence on my own build, but leaning towards tubular.....

Kurt

Mavmavv

Dont cast manifolds handle heat better than tubular anyways?

OUTLAWZ RACING

iTrader: (9)

Please send one, size 34 boxer shorts and some baby wipes I just nutted.....


Thank u sir..

BlwnTA

iTrader: (18)

Ron...I was going to leave this alone so to not hurt the header business but if you knew every detail of Mike's set-up (truck mani's) and Steve's set-up (tubular headers) you wouldn't say "big" gains. In fact, it's non existent right now and that's at 2000HP. There may be advantage at some point with certain combo's, say for a big block with twins, but it is very apparent that the bang for the buck just isn't there with our stuff.

BlwnTA

iTrader: (18)

Chicken....lol

ninetres

iTrader: (35)

I am going tubualr on my next build partly for the idea that they "should" spool some twins better on a pro-tree....AND THE BLING FACTOR!!!!!

MelScrilla

iTrader: (2)

this may be the first case that a budget setup wins, usaully budget and high horsepower dont go together.

jp92z28

iTrader: (8)

are the 6.0 manifolds stock or is there any porting done to them?

chasgiv3

iTrader: (1)

No porting done to mine and she put down 900RWHP. I thought about buying a better intake and bigger throttlebody but when it's all said and done I don't think I'll be getting much in the way of additional power. I'm spending my money on bigger injectors and a new parachute.

99Z28LS1

iTrader: (4)

I love real world experience and experiments

TurboZ28408

iTrader: (18)

anyone measure the backpressure ?

Gforce Engineering

iTrader: (2)

I'd like to thank the "big boys" for stepping into this thread.
Lots of good information has been mentioned here.
You cant beat the look of custom tubular headers and I'm sure there are gains to be had from them.
And you also cant beat the truck manifolds for the OEM look, price and durability. Plus it sounds like they will hang right up there with the headers.

Thanks
Chris

Josh@KY-Turbo

iTrader: (120)

Headers, manifolds, maifolds, headers....the debate continues.

They both have thier place.
Manfolds are simple, stronger, and save fab time.
Headers have the bling factor, Cost more, More fab time, and so on.
Both have made 1500rwhp.


I do both on a daily basis. Single and twin setups. Small frame and large frame setups. Spool up characteristics from Maniofolds to headers is a mute point. Its all in what you want and are looking for with your build.

Thanks you for your time.

Phil99vette

iTrader: (11)

FWIW, I have not seen a turbo car spool faster than my old setup. 1 3/4" headers and a 2.5" crossover tube, 106mm turbo, 1.32/g-trim. We'd be ready to leave in less than 1.5 seconds(1.25-1.27 60'), stages just like a nitrous car.

99Z28LS1

iTrader: (4)

Do you think it was because placement of the turbo?
or just how your pipes were routed?
or just because your motor was built with quote, "Better parts than most?"
Or the material used
or how you have the tune set up?

mitchellmade

iTrader: (13)

can i see some pics of truck manifolds on a single turbo set up?