What are the big #'s being made with truck manifolds?
#23
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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.
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.
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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
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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.
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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.
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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
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
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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.
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.
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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?