10-12-2007, 10:07 AM | #1 |
Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
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Exhaust questions
1982 C10 5.7 motor Edelbrock intake and carb
Im looking to have power and the best possible gas mileage my exhaust is kinda shot. The manifolds are there as is the Y pipe and it feeds down into something that kinda looks like a cherry bomb muffler then that goes into the intermediate pipe which is rusted and the muffler and out the dual tail pipes.. for now im going to go to the local chain and get a cheap walker muffler intermediate pipe and the dual tails and that should cost me under a hundred dollars if i install it myself . In the spring im going to want to put a decent exhaust on there. Heres the question I wanna put back the A/C compressor and the rest of the air conditioner back. I was thinking of Headers and some kind of mufflers then straight out the back under the bumper. I dont want to have the truck too loud either and i dont wanna spend more on the exhaust than the National Deficit any ideas? Also ( now im getting old and senile) but its been a while since i built a truck but are there certain brands of headers to stay away from due to the fact they warp when they get hot?
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
10-12-2007, 04:14 PM | #2 |
glamoros piece o' lowlife
Join Date: Mar 2007
Location: Redford, MI
Posts: 1,164
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Re: Exhaust questions
the thing that looks like a cherrybomb is actually a catalytic converter, depending on the local emissions laws you may or may not need a new on - some states like mine don't do testing at all so I can get away with no cats on any vehicle, however if NY has sniffer tests you will probably need a new cat, or two if running duals.
The exhaust setup I'd favor would be a set of long-tube headers that merge into a Flowmaster Y-collector with 2.5" inlets and a 3" outlet, the run the 3" exhaust up behind the cab with a tractor flapper valve on top of the pipe, like an 18-wheeler I've seen that done on a 351-powered Bronco, only he had a high-flow cat (canadian vehicle) and a muffler and exited out back, this setup replaced a perfectly good dual 2.5" system and improvements were pretty noticeable, especially in the low-end torque.
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The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express |
10-12-2007, 05:34 PM | #3 |
Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
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Re: Exhaust questions
luckilly on a truck my age out of NYC ( i have it registered to my house upstate) i dont need to pass exhaust save having one on there.. its a safety inspection ( lights horns glass wipers) and i passed that
i had thought of doing up the back of the cab but it would take away bed space which i do need.. my trucks serve double duty as work trucks as well as projects.. os the exhaust will either go straight out the back or out the back of the bedsides
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
10-12-2007, 05:49 PM | #4 |
Registered User
Join Date: Feb 2007
Location: Austin, TX
Posts: 3,930
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Re: Exhaust questions
I had a dual 2.25 inch setup with a H pipe and some 3 chamber flowmasters on my old truck. I think 2.25 pipe is cheaper than 2.5 or 3 inch so that will save you some money.
Dynomax and Flowtech headers for these trucks are junk as far as i'm concerned. I've got a set of Hedmans waiting to go on but the design looks much better. Turbo mufflers seem to be a good deal. I had a set on my GMC and they had a nice tone and were pretty quiet on the highway, but they sounded pretty cool at full throttle. The best thing about these is no interior resonance at all, and they are dirt cheap, about $30 each. My setup didn't have an H pipe, but I imagine the H pipe would mellow and quiet them down even more. |
10-13-2007, 10:16 AM | #5 |
Robert Olson Transport
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
|
Re: Exhaust questions
ill do some research on hedeman headers and hopefully i can find a set that works with the AC setup. years back i had an el camino that gave me alot of issues with the clearance by the compressor. i dont recall the brand of headers tho
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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