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Old 07-27-2010, 07:04 PM
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rams horn exhaust manifold spacers

anyone know of where to find exhaust spacers? my rams horns on my LT1 are too close to the valve covers, and its causing some problems....

thanks!

tyler

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Old 07-27-2010, 08:20 PM
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just get some headers.
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Old 07-27-2010, 08:57 PM
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i need to use the rams horns for the jaguar conversion... its the only kind of manifold that fits...
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Old 07-27-2010, 10:04 PM
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jegs sells header flanges that can probably be used as spacers. it looks like they will work
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Old 07-27-2010, 10:06 PM
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exhaust flanges

can you use header flanges to move out about 1/4 inch. I've seen do it your self header kits. probably just buy the flanges from one of those companies.
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Old 07-28-2010, 01:41 AM
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Quote:
Originally Posted by tylerwerrin
i need to use the rams horns for the jaguar conversion... its the only kind of manifold that fits...
Don't come around me talking like that, I'll fire up my Sawzall and show you some header fit....
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Old 07-28-2010, 06:38 PM
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the valve cover rails on the later centerbolt heads (vortec, LT1, '87 and up smallblock....) stick up higher and won't clear manifolds that come up over the ports.

there should be headers that fit, if ram's horns do than vette or blockhuggers probably will, and ltos of things can be made to work with the right saw/welder/hammer
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Old 07-28-2010, 06:50 PM
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Can you grind the obstruction off of the exhaust manifolds?.......just a thought
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Old 07-29-2010, 08:34 PM
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Hardin Marine makes 1/2" spacers, but they are expensive. Check them out at hardin-marine.com.

If you know someone, or a place, with a water jet cutter, you can have them made using a header gasket as a template.

GOOD LUCK !
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Old 07-29-2010, 09:27 PM
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I just went through this with a vortec head change using center bolt corvette valve covers. The little bumps in the casting just needs to be sanded down a little with an angle grinder

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Old 07-30-2010, 03:47 AM
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This pic is throwing me a little. I see a short water pump, ram horns with the alternator mounted to it...but a late 70's-through-80's A/C compressor. Looking at the A/C pump makes me think it's a late 70's-early 80's vette. But the short water pump and alternator mounted to ram horns makes me think it's a late-60's model (or did this body style even use ram-horns form the factory???) Hmmm...

Quote:
Originally Posted by artsvettes
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Old 07-30-2010, 04:33 AM
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Quote:
Originally Posted by a1supersport
This pic is throwing me a little. I see a short water pump, ram horns with the alternator mounted to it...but a late 70's-through-80's A/C compressor. Looking at the A/C pump makes me think it's a late 70's-early 80's vette. But the short water pump and alternator mounted to ram horns makes me think it's a late-60's model (or did this body style even use ram-horns form the factory???) Hmmm...
The Corvette used the short water pump and rams horn exhaust manifolds until 1982, the last year of the '68-82 style body. It never used long water pumps or different exhaust manifolds. I would guess the car in the pic is '79-82 because of the radial compressor. Or the compressor has been retrofit.
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Old 07-30-2010, 04:37 AM
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Quote:
Originally Posted by LEAD LAP

If you know someone, or a place, with a water jet cutter, you can have them made using a header gasket as a template.

GOOD LUCK !
This was my thought too, creates the least amount of finish work. Laser cut, or maybe even Plasma cut if you can find someone local who has a Plasma Cam/Cad set-up.
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Old 07-30-2010, 06:08 AM
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If you must, find an old set of headers, remove the tubes and you have the correct spacer. Use a die grinder to port match to your rams horns and you are on your way. I would also use copper gaskets on each side of the spacer or you will probably be run crazy with leaks.

Trees
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Old 07-30-2010, 07:27 AM
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Quote:
Originally Posted by a1supersport
This pic is throwing me a little. I see a short water pump, ram horns with the alternator mounted to it...but a late 70's-through-80's A/C compressor. Looking at the A/C pump makes me think it's a late 70's-early 80's vette. But the short water pump and alternator mounted to ram horns makes me think it's a late-60's model (or did this body style even use ram-horns form the factory???) Hmmm...
The corvette always used a short pump but the pilot shaft was larger then the other short pumps. The alternator barcket is not part of the manifold as it was in earlier production models. This is a 1977 corvette and the A/C compressor was changed to the R4.
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