GASKET HELP

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UCNSTARZ

Not-quite-so-new-guy
Dec 24, 2019
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Anyone have a holley street dominator on there chevrolet v6 with a holley 4360 "economizer" 4bbl. I cant seem to find a carb mounting gasket that will seal? Any help would be great. Itsva spreadbore set up. Thank you in advance.
 

Ribbedroof

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Jan 4, 2009
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Mr Gasket #56?

mrg-56_ml.jpg


Which Chevy V6? 3.3, 3.8, 4.3?

Does the manifold have a spreadbore flange or square? Most Holley intakes are square flange, which will require an adapter to run a spreadbore carb.

images
 
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UCNSTARZ

Not-quite-so-new-guy
Dec 24, 2019
7
8
3
Mr Gasket #56?

mrg-56_ml.jpg


Which Chevy V6? 3.3, 3.8, 4.3?

Does the manifold have a spreadbore flange or square? Most Holley intakes are square flange, which will require an adapter to run a spreadbore carb.

images
Spreadbore intake
Spreadbore carburetor
3.8 chevrolet engine
 

Ribbedroof

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Jan 4, 2009
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Where is the issue?

Can you post a pic of the manifold flange?

There are about a dozen different base gaskets for spreadbore carbs, a pic of the flange would help select the correct one.
 
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Oct 14, 2008
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Was there actually an aftermarket intake available for the V6? I would assume it is a factory 4.3 intake, the same isn't it?
 

565bbchevy

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Aug 8, 2011
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79 USA 1

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Sep 2, 2011
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UCNSTARZ

Not-quite-so-new-guy
Dec 24, 2019
7
8
3
Was there actually an aftermarket intake available for the V6? I would assume it is a factory 4.3 intake, the same isn't it?
I put the car together 27 years ago. Holley 4bbl intake and Carb
Speed-pro pistons 10.5
Sealed Power Cam and Lifters
3 angle valve job
TH350
And recently 4.10 posi
 
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