Quadrajet Spacers

[Mlcdc1]

Running a 1977 C15 stock 350, 4 barrel quadrajet and having issues with heat soak. Considering a carb spacer, wondering if that’s an option and if so what recommendations anybody has. Thanks.

 

[bucket]

Do you still have the original type, thick mounting gasket? They are maybe 5/16" thick or thereabouts and also act as an insulator.

 

[PrairieDrifter]

I also like the thick gaskets. Never had a problem from them.

 

[Mlcdc1]

Any recommendations on brand and type. If I read things right, there are a lot of different materials they’re made with.

 

[bucket]

Any recommendations on brand and type. If I read things right, there are a lot of different materials they’re made with.

Just the stock type thick one.

FEL-PRO Carburetor Mounting Base Gasket 60249

Shop for FEL-PRO Carburetor Mounting Base Gasket 60249 with confidence at AutoZone.com. Parts are just part of what we do. Get yours online today and pick up in store.

www.autozone.com

 

[Ricko1966]

Just get the stock mounting gasket,Look it up in a parts catalog,they aren't all open center as @bucket pictured but they should all be thick and act as an insulator. The difference between an open center and a 4 hole is the open center will act like an open plenum on a car designed for a 4 hole.

 

[bucket]

Just get the stock mounting gasket,Look it up in a parts catalog,they aren't all open center as @bucket pictured but they should all be thick and act as an insulator. The difference between an open center and a 4 hole is the open center will act like an open plenum on a car designed for a 4 hole.

Yes, there are 4-hole versions that were used by GM as well. The only reason I posted the open plenum version is because that's what Autozone showed as correct for a '77 when I looked it up.

 

[Ricko1966]

Yes, there are 4-hole versions that were used by GM as well. The only reason I posted the open plenum version is because that's what Autozone showed as correct for a '77 when I looked it up.

I was just stating for GP there were both to the OP,you went the extra mile and looked it up by application. Thanks,Merry Christmas

 

[fast 99]

Hot soak issues have been around since the EPA started messing with fuel.

My SB's do start a bit hard after hot soak. Not horrible but noticeable. To help I buy highest octane E free available. That's lower than regular was when these trucks were new. One doesn't have a cat so I add a little AV gas [1 or 2 gallons] to a tank during the hottest part of summer. That does help and exhaust smells nice.

 

[vr1967]

If you want more than just the thick gasket, look for a q-jet heat shield, GM pn 3969837.

(Quick pic from the net, as I’m not home at moment)

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