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Topic Review (Newest First)
11-26-2012 08:04 PM
454C10 chevy 454 turbo manifolds | eBay
11-25-2012 06:35 PM
cobalt327 The ones we did in the boat were off by about 0.110" before being reworked. I doubt the outlets are going to work for him like that anyway.
11-25-2012 06:29 PM
S10 Racer I tried switching block hugger headers for the BBC S10 I built and the ports are too far off to correct with a die grinder. I actually cut the flanges off the tubes and flipped them 180* and welded them back on to get them to fit. Not saying it's the best way but I didn't want to fork out $1500.00 for a set of Lemon headers. The way mine came out, it would be so easy to install turbo's on.
11-25-2012 06:14 PM
cobalt327
Quote:
Originally Posted by 31fordcoupe View Post
Cobalt,

As alway I appreciate your insight. Looking at the manifolds if I switched sides and turned them upside down, wouldn't one collector be facing upward and the other collector facing forward with a slight upward tilt? Please correct me if I'm looking at them incorrectly.
Like I said earlier, the outlets might not be where you want them...
11-25-2012 03:57 PM
31fordcoupe Cobalt,

As alway I appreciate your insight. Looking at the manifolds if I switched sides and turned them upside down, wouldn't one collector be facing upward and the other collector facing forward with a slight upward tilt? Please correct me if I'm looking at them incorrectly.
11-25-2012 01:55 PM
cobalt327
Quote:
Originally Posted by S10 Racer View Post
They will not bolt up upside down.
If you swap them side to side and THEN flip them upside down, I believe you'll see they bolt up.

The outlet may not be where you want it. There may also be a slight mismatch between the manifold and head ports, but this can be taken care of w/a die grinder and/or slotting the holes.
11-25-2012 11:08 AM
31fordcoupe Ok thanks a million for the replies guys. Guess that answers that question. I just didn't want to spend $$$$ on an aftermarket header designed for turbo applications.

I do have a good wire feed but just not that good at using it yet. Good friend of mine is an expert welder so I guess we will just get a good kit and get after it.

Thanks again.
11-25-2012 10:12 AM
OneMoreTime If all else fails I can take a exhaust manifold gasket or make a pattern and take it to my laser cutter guy and have a manifold flange made and then get some ready bent tubes and make an exhaust header that fits my particular needs. Sometimes guys try to save some cash which is fine but then wind up screwing themselves..learned that lesson..

Sam
11-25-2012 10:06 AM
hcompton
Quote:
Originally Posted by S10 Racer View Post
They will not bolt up upside down.
Good catch i think you are right the bolts on bb are not in line like sbc. They are offset bolt pattern in the picture. Once you turn them upside down they will not fit. You could use a few tricks to make them fit if this was a rare engine and parts were hard to find. But for chevy i would not waste the effort to make them work since other options are pretty cheap.

Do you have a wire feed welder. You can buy kits with manifold flanges and header primary pipes included if you need them but i would think a log manifold would be ok in this case. It would need to be pretty big but not to hard to make your own. I have had to do it on several cars. It seems to be easier than trying to weld to the old cast iron it will resist all efforts to weld up correctly and stay that way for any length of time.

You can also buy manifolds and pipe kits setup for bbc and sbc. Bbc might be costly because a bbc with twin turbos is almost always a big build up in the 1500 hp range. Mild turbo builds for big chevy have a smaller market. But imsure so,eone has a nice kit out there if you want to buy one and be done.
11-25-2012 09:50 AM
S10 Racer They will not bolt up upside down.
11-24-2012 09:52 PM
31fordcoupe Thanks hcomp.
11-24-2012 08:36 PM
hcompton Having them thw same on both sides would be easier to plumb up. The one in the picture looks good but the other one will be pointing oddly straight up. Not sure if the set you are thinking of has the same Outlets as the picture. Block huggers and some turn outs and a few pieces of pipe and the turbo will be hanging off the headers in an afternoon. Stock manifolds may be just as easy but i would think it better to run some headers. Even if they are equal length. I have seen them installed upside down and turn and turned around.

Also the block huggers headers from headman and hooker are cheap all the time. The manifolds may get more costly further down the road. And will give better performance. Turbos will need to be supported either way but less with the cast manifolds.
11-24-2012 07:44 PM
31fordcoupe
Quote:
Originally Posted by ap72 View Post
$250 for crappy manifolds? I'd just find a set of hugger or shorty headers, and make those work, you'll have an easier time making power and they're cheaper. the ONLY drawback is that they MAY not be as durable as cast iron manifolds- then again they could end up being just as good depending on what you buy and how it built.

Heat can kill any manifold or header so don't think a cast iron one will be bullet proof.
Who said I was buying those particular manifolds? I just used that pic cus it was the first one that popped up. Chill.

I can pick up a set for $40 bucks locally so I just wanted to know their viability. I also never said they would be indestructible; again just wanted to know if they could be configured correctly.
11-24-2012 07:21 PM
ap72 $250 for crappy manifolds? I'd just find a set of hugger or shorty headers, and make those work, you'll have an easier time making power and they're cheaper. the ONLY drawback is that they MAY not be as durable as cast iron manifolds- then again they could end up being just as good depending on what you buy and how it built.

Heat can kill any manifold or header so don't think a cast iron one will be bullet proof.
11-24-2012 07:14 PM
31fordcoupe Thanks for the reply. I am actually using a PT106. It's going in a 1984 1/2 ton Chevy Truck so I have tons of room under the hood.
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