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Old 09-26-2002, 07:26 AM
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Post intake manifold recommendation

I have a 1970 350 engine with a Rodchester Quadrajet carb, headers,mild cam. I am looking to upgrade the stock intake manifold without changing the carb. Any suggestions?

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Old 09-26-2002, 07:39 AM
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Normally any aftermarket intake will accept the original carb. Just make sure the intake is designed for the carb, i.e. spread bore or square bore.

The edlebrock performers are good. What type of intake do you have and what is it on? Some of the factory intakes were really good intakes.
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Old 09-26-2002, 08:04 AM
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The manifold is on a Camaro, the manifold has "GM 2" cast below the serial number.
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Old 09-26-2002, 10:59 AM
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Most aluminium after markets are drilled for square bore(Carter, Edile, Holley). Weiand makes a mid-rise drilled for both. (the 8004) I think perfomence is improved by sitting the carb on top of a 2" spacer and 1/2" insulator. If you go this route, you can buy one from Morosu that bolts to a sq bore and accepts the Q-jet. A Performer EPS is good for this setup, as is the above Weiand. If you have the $$$, the Perfomer Air Gap accepts both types of carbs.
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Old 09-26-2002, 11:32 AM
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What is the casting numbers or you can look them up under

www.mortec.com

Probably nothing special but some models had some pretty good intakes from the factory.

[ September 26, 2002: Message edited by: MHenricks ]

[ September 26, 2002: Message edited by: MHenricks ]</p>
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Old 09-26-2002, 04:18 PM
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rrsulliv,

The Edelbrock Performer manifold will work well with a Q-Jet Spread Bore Carb or Square bore carb It works well from idle to 5500 RPM. I have one on my Monte with a Chevy 355 CID making around 400 HP (Estimated by Engine builder who helped me select parts). He told me a Carb spacer will kill low end torque but is good for High RPM power over 6000 RPM. Hope this helps.

Joe
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Old 10-06-2002, 03:45 PM
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Check out the Edelbrock Performer RPM part#7104.
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