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#26 | |
computer illiterate
Join Date: Jan 2001
Location: Des Moines, IA
Posts: 6,446
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Quote:
how low do they hang?
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72 2wd blazer 72 swb 4x4 |
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#27 |
Registered User
Join Date: Nov 2003
Location: kc
Posts: 229
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i agree, my headers cool down a whole lot quicker than my manifolds.
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71 C10 SWB BLACK AND WHITE 350 CRATE TH350 ENJOY LIFE |
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#28 | |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
Posts: 15,320
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Quote:
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#29 |
Registered User
Join Date: Dec 2002
Location: Marysville, WA
Posts: 101
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By not running headers your costing yourself 25 hp and roughly 30ft/lbs of torque and probably a few mpg.
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1971 gmc 3/4 ton, 350, t350 |
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#30 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
Posts: 15,320
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Must be true, I haven't burned a single gallon in three years.
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#31 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Quote:
He said the best way to go would be to set up a situation on a dyno and keep working DOWN in pipe diameter as the exhaust gas moves away from the engine to keep the velocity of the exhaust charge up. Since 99.9997% of us can't afford a dyno set up in a fully controlled environment we're better off WITHOUT headers. If you are going to get the stupid things get the SMALLEST diameter pipe and wrap the crap out of it. Remember - the manufacturers and magazines that sell headers tell you they increase power because they want you to buy their product. The guy I get my information from has rebuilt more engines than most of us have seen. And yes thats a lot of engines. Plus from a practical stand point you can't get by the fact that headers are simply a pain in the @ss.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#32 |
Registered User
Join Date: Sep 2003
Location: Ohio
Posts: 127
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rpm
At what RPM are you gaining that horsepower? 4000+?
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#33 |
Registered User
Join Date: Jan 2001
Location: Medicine Hat,AB, Canada
Posts: 194
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I've used Hooker super comps for my Burb for almost four years daily driving. I've never had a leak. My starter does overheat when I'm towing the trailer on really hot days. My brother-in-law has had his on for six years, same brand, never any leaks. I don't have a heat shield on the starter and the headers are quite close. No problems in normal use. Just my experience, Michael.
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#34 |
Not the nightly winner
Join Date: Jul 2002
Location: CHARLEMONT MA.USA
Posts: 763
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anybody got a part no. for some shorty headers?
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72C10SWB BLUE 350/350 86K10LWB BLUE 5.7 700r4 7.5' fisher plow 93S10XCAB4X4 BLUE 4.3 4L60e 69gmc c10 v8 3 on the tree yellow 72k10 swb 350 3 on the tree green 86k15 swb5.0L 4spd brown |
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#35 |
GOT JACK???
Join Date: Aug 2003
Location: New Jersey
Posts: 122
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late to the game, but i'll throw in 2 cents
I prefer stock manifolds for most applications. they do not suffer from the rust through after a few years. maniflods also have a better sealing system to the pipes. also, i have never known manifold bolts to loosen up on a regular basis. ground clearance is rarely an issue on trucks, but for the guys running lowered trucks, this could be a concern.
However, i have noticed the rust through problems are limited to vehicles that do a lot of sitting. i have installed headers on cars that never sat parked for more than 24 hours at a shot, and never had rust problems. but if they sit, they rust. (mind you i live in NJ, plenty of salt air and salty winters). Also, i do agree with the quality of the header dictates the problems you will have. cheap headers are nothing but a PITA. you have to spend the money and invest in good pipes, or they will be a nightmare. Preformance wise, headers are golden. as for wrap, under hood heat, etc. everything has its ups and downs. under hood heat is also only an issue when you're standing still or going slow. and if under hood heat was such an issue, why aren't more people relocating radiators to keep the engine bay cooler? besides, how hot is it under the hoods with air rushing through, over and under it at 60 mph? just doesn't seem like much of an issue. I think if you're doing a mild or stock set up, go cast. if you're building for power, don't forget the headers! ;D
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68 C-10 250", 200R-4, LWB 04 F350 dually V-10, 6-spd 72 Cadillac Coupe DeVille |
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