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Pontiac of the Month

onetrick56's 1964 Grand Prix

2020 September
of the Month

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Hey guys!

I'm really struggling to find an answer so I’m hoping there’s someone here that can help!

Ill preface this by saying that I’m brand-new to the classic car resto world and all of this is like speaking another language so please go easy on me haha.

This past weekend, we tore down the engine on my 1966 Pontiac Parisienne. I’m 80% sure it has a 283 Small Block Chevy V8 (haven’t been able to confirm yet from the engine numbers) but is pretty badly seized. 
 

As a replacement, I’ve found a 307 with the body of a 327, pulled out of a 1972 Chevy Nova.

From all the research I’ve done, this should be a compatible swap. I’ll need to replace the water pump but besides that, I’m hoping it will be okay? Someone raises a concern over the bell housing today though and now I’m worried if it will fit.

Again I’m having a really hard time finding this info online but did the Parisienne’s originally come with small block Chevy motors or am I way off? If so, is this a suitable replacement?

many thanks!!

Hayley

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1 hour ago, hayleywr said:

Hey guys!

I'm really struggling to find an answer so I’m hoping there’s someone here that can help!

Ill preface this by saying that I’m brand-new to the classic car resto world and all of this is like speaking another language so please go easy on me haha.

This past weekend, we tore down the engine on my 1966 Pontiac Parisienne. I’m 80% sure it has a 283 Small Block Chevy V8 (haven’t been able to confirm yet from the engine numbers) but is pretty badly seized. 
 

As a replacement, I’ve found a 307 with the body of a 327, pulled out of a 1972 Chevy Nova.

From all the research I’ve done, this should be a compatible swap. I’ll need to replace the water pump but besides that, I’m hoping it will be okay? Someone raises a concern over the bell housing today though and now I’m worried if it will fit.

Again I’m having a really hard time finding this info online but did the Parisienne’s originally come with small block Chevy motors or am I way off? If so, is this a suitable replacement?

many thanks!!

Hayley

Yes, Pontiac, in those years did run a Chevy drivetrain. So the tranny should mate to any Chevy small block engine. That said, depending on what you have to spend and what kind of power you want? The 283 could be the better choice as a rebuild! If built right you could get anywhere from 400 to 500+ hp! Do you know what the tranny is?

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Thanks so much! I don’t know what the tranny is yet- I just picked up the car a few weeks ago. 
 

And yes, you can definitely get more power with a different motor but my 283 is seized and two of the cylinders are pitted. Unfortunately, I can’t afford to have it machined and worked on so I need a quick/cheap fix just to get it running. I’ll only be cruising this summer and can upgrade in the future if necessary! 
 

plus the motor I’m buying was only $100 😅

 

thanks again for your help! Really appreciate the reassurance 

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