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Old 03-22-2006, 08:37 PM
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Camel Back Heads

I recently changed motors in my 83 Grand Prix. I switched from a 3.8 to a Chevy 305. I have a set of Camelback Heads to put on it, but they need rebuilt. I'm not familiar with how exactly to do it because I've never rebuilt heads before. Anyone have any advice?

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Old 03-22-2006, 08:42 PM
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Don't do it, you will decrease your cr drastically.
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Old 03-22-2006, 08:56 PM
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Well, the problem I'm running into is this:

The motor is out of an 87 Caprice. The manifolds for that year motor, had the emissions garbage right on them. I can't find those manifolds, and they don't make any aftermarket headers or anything for that year motor. In order to put the headers that I have on the car, I need to change the heads....
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Old 03-22-2006, 09:02 PM
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Why do you need headers if not to increase performance?

The combustion chamber on your 305 heads are smaller than your camel backs...

If you put the camel backs on your 305 and add the headers, what you will wind up with is a slower 305 with headers.

Defeats the purpose in my opinion...
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Old 03-22-2006, 09:17 PM
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Ok, then what do you suggest I do? Because I can't find the stock manifolds for the motor... I need to get something on the car so I can get my exhause done and actually drive it. It's been down for 6 months now and I'm going stir crazy...
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Old 03-22-2006, 09:28 PM
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A set of manifolds for a 305 in that car cannot be impossible to find even in your area. Ask for some for a 305 in an '83 Monte Carlo...

Check the scrapyards...
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Old 03-22-2006, 09:31 PM
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Checked every one around... They all said that I have to have the manifolds for an 87 305 because of the emissions...
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Old 03-22-2006, 09:39 PM
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Screw the emissions...would headers pass?

Put some simple manifolds on it (who cares about emissions at this point).

Why won't your headers bolt up anyways?
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Old 03-22-2006, 09:46 PM
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ok, my husband fell asleep, so i'll just wing it... lol... ok,

he said they only made that "generic" 305 for one year, and it happened to be the 87... He said the headers that he has won't bolt up because it's a different bolt pattern or something like that... He said the only manifolds that will work for that year motor are the stock ones from the 87 305. The headers won't bolt up to the stock heads, so he has to change them, and the only heads he has are the camel backs...
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Old 03-22-2006, 09:55 PM
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This is a new one to me...

I don't deal with the newer stuff much as I am used to modifying the old.

(I suppose '87 is not new anymore but it sure is to me)

So, if I understand what your saying...then GM retooled their entire 305 sbc for one year only rendering it incompatable with anything else?

I would go out and test fit the parts as I have a feeling that someone is dead set on installing a certain set of heads whether they are needed or not...
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Old 03-22-2006, 10:02 PM
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No, thats not it at all... lol... trust me, he's tryin to do what's gonna be best for the car. It's just that all the junk yards are basically telling us, that yes, that motor is pretty much incompatible with anything else when it comes to the manifolds and heads... Trust me. I called all these places because he seems to think he NEEDS a race car to drive our two year old and two month old around in... Believe me, If there was something else that we could put on it, we'd be more then happy to... I'm just so fed up with the car I'm ready to haul it to the scrapyard....
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Old 03-22-2006, 10:07 PM
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Quote:
Originally Posted by gto nut 00
because he seems to think he NEEDS a race car to drive our two year old and two month old around in...
I believe this says it all...
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Old 03-22-2006, 10:15 PM
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Right, but you said yourself that the camelheads will more or less slow it down... Therefore, if there's something he can put on it to make it go faster, that's what he'll do...
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Old 03-23-2006, 04:46 PM
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what is the casting number on the heads on the engine now ? and the casting number on the camelbacks ?
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Old 03-23-2006, 06:22 PM
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The 267's and 305's had the rear bolt hole in the Pass. side exhaust manifold farther back than the std. small block pattern and it wasn't just the '87s, a LOT of them were that way and I have no idea why but the bolt hole for the regular manifolds was still there in the head so any small block headers or exhaust manifolds will bolt up to the 305 heads. Find manifolds for a '78-'88 Malibu, El Camino, Monte Carlo, Grand Prix, LeMans, etc. with a Chevy 267 or 305. I believe manifolds from a '76 up 305 Camaro will work too. If you can't find any you're not looking hard enough...........
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