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#1 |
Just Don't Stop!
![]() Join Date: Feb 2004
Location: Dallas
Posts: 1,239
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Gen III motor guys (LS1 based 4.8/5.3/5.7/6.0): header poll
Seems like now that everyone is discovering these motors they are finding their way into anything and everything that moves. Including our trucks. Because I have a hard time shelling out 800 bucks for a long tube header designed for a 67-72 with a LS1 based motor I am building my own set.
I was wondering if there is any interest in a more affordable header if I was to produce a limited quantity of these? I'd like to know a few things: 1.) A head count of people that are first off, even interested in a set of headers for their LS1 based 67-72 truck, in the near future. 2.) What qualities would make the header most desirable - bearing in mind these will affect cost. (materials like stainless or just heavier guage mild steel) 3.) What is the most you would be willing to pay for a set. The set I am building for my personal project will be using 1.75" primaries with a 3" collector. Nothing fancy just a nice and thick 3/8" flange for the heads and tig welded. I have the ability to construct a header from any material starting at mild steel even to titanium (bring your wallet). I made a set of F-body headers fit once but I had to hack them up pretty bad, so I am finally biting the bullet here. Going from manifolds to my previous long tube headers I gained 26 rear wheel horsepower and 22 ft pounds of torque. You should expect that much with these with a good tune. Let's hear some feedback...
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1968 C10 build in process TT LSA/6L90e/9" |
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#2 |
Registered User
Join Date: Dec 2002
Location: Tampa
Posts: 1,191
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How about 1 3/4" stepped to 1 7/8" with 3 1/2" merge collector. O2 bungs and bungs for egt probes (8). Material to be steel (which I would have ceramic coated inside and out) or stainless. Right now my plans are to build my own or modify a set of Kooks which go for about $960.
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'68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc |
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#3 |
JUNK COLLECTOR!!!!!
Join Date: Jan 2005
Location: Spokane, WA
Posts: 514
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well, now i remember why i am going with a tpi motor for now.......that wonderful green stuff i don't have!
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![]() ![]() The dark side! 2000 XLT PSD F-250 4x4! Offroad package 1970 C10 Short-step soon to be short fleet, maybe? Corvette in truck's clothing in work! Corvette IFS, IRS, TPI and Doug Nash 4+3 |
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#4 |
Just Don't Stop!
![]() Join Date: Feb 2004
Location: Dallas
Posts: 1,239
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Yeah, The kooks are real nice units. I think you will find that they would take alot more modifying than it would be worth, especially since they are already more than 800 bucks. They are also a 3" collector not 3.5" unless they have started that recently?
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1968 C10 build in process TT LSA/6L90e/9" |
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#5 | |
Registered User
Join Date: Dec 2002
Location: Tampa
Posts: 1,191
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Quote:
And for Project1970, save your money until you can get the LT's. The shorties are not worth the money. If its more for looks then go for it but if your after performance it's not worth the cost plus what your giving up with the LT's.
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'68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc Last edited by 68LSS1; 01-31-2005 at 12:51 PM. |
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#6 |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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Oh, so NOW you offer this up, after I've already got my shorties in :P
Depending on the timeframe you'd be doing this in, and the cost of a pair of headers (either coated or uncoated - I can run them right over to JetHot if I need to) I'd be very interested in this. I'd ideally like to get out the door for the pair of headers and coating for $600 or less. If that can be done, and it can be done reasonably soon (and my mechanic can send back the shorties for at least a majority of a refund, heh) I am DEFINITELY in on this.
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Project1970 - LS1 Swap Complete! ![]() Last edited by Project1970; 01-31-2005 at 12:58 AM. |
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#7 |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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I ran into the same thing there with F-Body longtubes: the collector goes straight into the frame. Were it not for that, they'd be great.
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#8 |
Just Don't Stop!
![]() Join Date: Feb 2004
Location: Dallas
Posts: 1,239
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Yup, that's why I'm working on building a set. If there are only three people interested though I guess it will be a one off thing... sorry.
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1968 C10 build in process TT LSA/6L90e/9" |
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#9 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,977
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Hey guys, could you not cut the collectors off the f-body headers & swap them side-to-side so that they would point toward the trans vs. the frame?
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#10 |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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F-body headers arent' usually symetrical passenger vs drivers' side, even for shorties.
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