I've installed an GM LS motor into a 68 Cougar and I'm hoping to find off the shelf headers ( ya I know good luck ) . I have it in my head that F body headers might work , mainly because of the tight fit . I know it would help if the trans (4L65E) was in place but it hasn't arrived yet so I'm jumping the gun . So please let me know your thoughts .
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98-02 F body full length headers
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I think the Kook's headers that I put on my car would fit, you have way more room than my Z28 has.The Green Machine.
http://s1.postimg.org/40t9i583j/mytruck.jpg
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That's what I'm hoping for . I've also been weighing up long tube vs short tube . Leaning towards long tube , the only advantage that I see in short tube is more control over ground clearance . It's not going to ride really low anyways . Plus if I have the room and I'm able to run long tube , why not ? Does it seem to you that I'm thinking out loud ?
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Also think about 04-06 GTO headers from Kooks, which is what I have, expensive but great fit. FWIW, LS shorty headers marginally flow better than stock manifolds. You might want to consider honing used manifolds and call it donea.k.a. - arrowhead from joysey
"They're no good for you. all they ever think about are cars" (GTO/Warren Oates) - Two Lane Blacktop
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A Ford 302 has the same exhaust port spacing as an LS1. Often, you can take a set of headers meant for a 302, slice the flanges off, and weld in a set of LS1 flanges.Last edited by Matt Cramer; July 30, 2014, 11:19 AM.
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Originally posted by Matt Cramer View PostA Ford 302 has the same exhaust port spacing as an LS1. Often, you can take a set of headers meant for a 302, slice the flanges off, and weld in a set of LS1 flanges.
Originally posted by Beagle View Postbore spacing is the same as a Windsor I think? - I wouldn't rule out thinking about a flange swap on 302 or 351 headers if the Camaro pipes don't fly.Last edited by Beagle; July 30, 2014, 11:28 AM.Flying south, with a flock of bird dogs.
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Thanks for your input guys .Seeing as I'm starting with a completely redesigned front suspension and no more shock towers . I see no need to start with 289/302 Mustang headers and grafting them to LS flanges . If I still had the old suspension and towers in place then I could see maybe going that route .
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GTO headers won't work because of the oil filter location. you need something that doesn't sweep down until the #5. so http://www.summitracing.com/parts/dt...make/chevrolet or this http://www.summitracing.com/parts/ko...et?prefilter=1. You'll more than likely have to modify the height of the header no matter what due to wide variations in floor height, so the tri-y makes that WAY easier.
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Originally posted by greenjunk View PostGTO headers won't work because of the oil filter location. you need something that doesn't sweep down until the #5. so http://www.summitracing.com/parts/dt...make/chevrolet or this http://www.summitracing.com/parts/ko...et?prefilter=1. You'll more than likely have to modify the height of the header no matter what due to wide variations in floor height, so the tri-y makes that WAY easier.
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