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Old 07-12-2018, 03:41 PM   #1
Tjmac23
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Bendix Stromberg carb replacement

Hi all,

I have a 1966 GMC 3/4 ton pickup with 305 V6 big block. The Stromberg carb has had it and I’d like to replace but having tough time finding a 2bbl carb that will fit to current intake manifold.

I like the Holley 2bbl #7448 350 CFM. The current four bolt pattern on manifold is 3 1/4 X 1 7/8. I tried to find an adapter to accept the Holley carb but had no luck. Any advice?

Should I have an adapter machined to fit current manifold or replace the manifold in order to mate with Holley carb? Thx

Tjmac23
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Old 07-12-2018, 07:30 PM   #2
MusicMan70
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Re: Bendix Stromberg carb replacement

Welcome TJMac!

Here is link from the Jolly page showing how its basically done.

http://6066gmcguy.com/holley.html

You will need this style adapter and if you wish, open up the base to match the adapter.

https://www.summitracing.com/parts/mrg-1937mrg

Most have used the Holley 500 and good info here as well;

https://6066gmcclub.com/index.php?
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Old 07-12-2018, 07:43 PM   #3
Tjmac23
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Re: Bendix Stromberg carb replacement

Much help ...Thank you. Would you recommend Holley 350 CFM or 500? I’m not looking for speed obviously but just want better engine performance.
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Old 07-12-2018, 07:57 PM   #4
MusicMan70
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Re: Bendix Stromberg carb replacement

Most of the others have reported better results with the 500.
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Old 07-13-2018, 08:13 PM   #5
nbrfd007
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Re: Bendix Stromberg carb replacement

500 Holley works great on my 305 V6 GMC, highly recommend doing the HEI conversion, the info is on Jolly's site.
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