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older style intake

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Post Options Post Options   Thanks (0) Thanks(0)   Quote CHAR Quote  Post ReplyReply Direct Link To This Post Topic: older style intake
    Posted: Jun/12/2019 at 1:09pm
Hey all.

I have an older style Edelbrock 2131 low rise intake manifold on my '72 SST, and was wondering if it has a exhaust crossover under the carb like some older GM products.  The specs from Edelbrock are unclear.  Trying to decide if I need one of those thermal break carb gaskets or not.  It does look like the valley pan shield is in place and there is a 1" alum. spacer on top already.
Thanks

Char
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Post Options Post Options   Thanks (0) Thanks(0)   Quote THE MENACE Quote  Post ReplyReply Direct Link To This Post Posted: Jun/12/2019 at 2:04pm
The #2131 is a Performer series Intake and it does have the heat crossover.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Jun/12/2019 at 3:15pm
Dennis - the walking, typing, dictionary of all things intake manifolds. Pretty cool.....
Anyway, speaking of cool - I personally prefer to run those insulators under carburetors after my experiences with gasoline lately - and hearing the stuff boil after shutting down. Even years ago it was something I liked to see as when a car is towed into the shop off I80 with fuel troubles and you are told "this family is in a hurry, get on it right away" and you burn your fingers getting a carburetor off - well.....  ;-)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CHAR Quote  Post ReplyReply Direct Link To This Post Posted: Jun/12/2019 at 4:08pm
Great, thanks guys.  Big gooey carb gasket it is.  maybe and airgap in the future.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Midnight Rambler Quote  Post ReplyReply Direct Link To This Post Posted: Jun/12/2019 at 9:01pm
Originally posted by CHAR CHAR wrote:

Great, thanks guys.  Big gooey carb gasket it is.  maybe and airgap in the future.


Phenolic spacer, solid rubber, Jegs and Summit carry them from 1/2" to 2" for under $20.  Great insurance if you have the clearance, even if you don't need it for a heat problem it still keeps the carb cooler so it should increase performance.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote CHAR Quote  Post ReplyReply Direct Link To This Post Posted: Jun/13/2019 at 11:32am
Yeah, I got the thinnest phenolic one for now.  The 2 1/2" open air filter dish hold down already leaves a good dimple in the hood pad.  May have to increase the filter diameter and cut the height.  thx
72 Javelin SST P code 360/auto/A/C/ rear defrost option/white on blue
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sweatlock Quote  Post ReplyReply Direct Link To This Post Posted: Jun/13/2019 at 3:03pm
Depending on the type of carb, there are 1/4” thick phenolic spacers available as well if hood clearance, such as on an AMX, is a concern. 
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