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GMC V6 and V12 Engines Engine repair and rebuilding

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  #11  
Old April 22nd, 2020, 09:46 PM
Pursellauto Pursellauto is offline
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Default Re: Engine swap on 65 GMC 2500 305 V6

A new question about this engine swap. The clutch pivot stud that screws into the bellhousing is broken off. Any ideas on where one of these could be located?
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  #12  
Old April 22nd, 2020, 10:20 PM
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sclor sclor is offline
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Default Re: Engine swap on 65 GMC 2500 305 V6

Pursellauto:
There are two sizes to bell housing depending on size of truck. What size truck is it?

S few are listed on eBay, but shipping is a bit expensive. Here is one for $40 , but shipping is from Iowa, for instance.

https://www.ebay.com/itm/163995471417

Craigslist has a motor with bellhousing for $200, but it is in Colorado springs.

Bolt pattern for the engine is unique for these motors. Parts are out there, but a bit of scrounging is typically required.

Hope that helps.
Regards
Steve
New Orleans
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  #13  
Old April 22nd, 2020, 10:33 PM
Pursellauto Pursellauto is offline
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Default Re: Engine swap on 65 GMC 2500 305 V6

This is what I am referring to.

https://www.ebay.com/i/352164203098?...xoCVn4QAvD_BwE
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  #14  
Old April 22nd, 2020, 10:38 PM
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Default Re: Engine swap on 65 GMC 2500 305 V6

Pursellauto:
Sorry, I thought you needed the bellhousing. I don't think there is anything unique about the pivot. Seems like one from a Ch*vy would work...
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Steve
New Orleans
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  #15  
Old April 22nd, 2020, 10:45 PM
Pursellauto Pursellauto is offline
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Default Re: Engine swap on 65 GMC 2500 305 V6

I found a few choices for those, I just need to get the broken stud out to see what size it is.
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  #16  
Old April 22nd, 2020, 10:50 PM
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Default Re: Engine swap on 65 GMC 2500 305 V6

Pursellauto:
Sorry, bug I don't know that answer.
Regards
Steve
New Orleans
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  #17  
Old April 23rd, 2020, 04:38 PM
Pursellauto Pursellauto is offline
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Default Re: Engine swap on 65 GMC 2500 305 V6

I figured out why I could not upload pictures. Here are a few. The different carbs on the 305 and 351 and the engine that we pulled along with the one we purchased for replacement.
Attached Images
File Type: jpg 65 GMC 2500.jpg (123.1 KB, Multiple views, 8 clicks)
File Type: jpg 305 V6.jpg (137.2 KB, Multiple views, 8 clicks)
File Type: png 351 V6.png (609.6 KB, Multiple views, 8 clicks)
File Type: jpg 305carb.jpg (119.9 KB, Multiple views, 7 clicks)
File Type: jpg frtcarb351.jpg (124.9 KB, Multiple views, 6 clicks)
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  #18  
Old April 23rd, 2020, 04:46 PM
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Default Re: Engine swap on 65 GMC 2500 305 V6

Pursellauto:
Thanks for the pictures. 351 does look like a "c" model. I would swap timing chain cover, carburetor to eliminate governor and thermostat housing. Should all bolt up on the swap. Double crank pulley on 351 I'd coveted by folks looking to add power steering.

Regards
Steve
New Orleans
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  #19  
Old April 23rd, 2020, 04:57 PM
Pursellauto Pursellauto is offline
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Default Re: Engine swap on 65 GMC 2500 305 V6

Our thought is to also swap intake from 305 to the 351 as long as the port sizes match. and use the 351 carb on that intake minus the governor. The other idea I thought about is if possible, swapping the jets from the 351 carb to the 305 carb if the carbs match in order to get the fuel flow for the larger engine.
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  #20  
Old April 23rd, 2020, 05:07 PM
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Default Re: Engine swap on 65 GMC 2500 305 V6

Pursellauto:
From what I can see, I think think you will find the intakes are identical. Carbs should be similar, if you want to swap jets. I am unsure if you will find much difference between the two, however.
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Steve
New Orleans
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