[CatalinaWMixxer]

I purchased my car back in 2022. At the time of purchase I didn’t know much about the car, neither did the seller. The car has good bones, and no serious problems. After doing a few days post purchase I noticed that the car had a 63 front end and hood, but the title and the fact plate on the firewall matched a 64.
I reached out to some guys in Facebook groups. They told me either it’s a 63 and a half or it’s a 64 and someone swapped the front end. Can some one lead me in the right direction? Trying to source parts for these cars isn’t as easy as going to the junkyard.

[Stuart]

Go by the number on the trim tag, it's a 1964 car that someone put a 1963 front clip on. There wasn't any sort of 1963 1/2 car. Your VIN tag on the car's title (as well as on the driver's door pillar) should also decode to a 1964 car; you can look at the VIN decoding information at http://www.1963pontiac.com/tools.htm or https://www.tpocr.com/pontiacvin.html

[misterp266]

It’s a ‘64 with a ‘63 nose. Dash is ‘64. Rear quarters are ‘64. If you want it right, look for a ‘64 nose.

Edit: after looking again, it looks like a ‘63 dash but quarters are ‘64. Looks as is someone cobbled a few cars together.

[pfilean]

What I see is a 64 that has been wrecked and had a 63 front clip put on. If they did that I would start looking for damage that may not have been repaired well. Like frame and suspension.

[CatalinaWMixxer]

I have been looking already. I’ve sourced a whole nose cone assembly and a grill assembly for 600.

[Goatracer1]

Can't be the same car but in the late 1960's I sold a 1963 nose for his 1964 Pontiac.

[CatalinaWMixxer]

I mean it could be the same car very slim chances lol don’t suppose you have a 64 nose laying around?

[hurryinhoosier62]

Originally Posted by CatalinaWMixxer

I mean it could be the same car very slim chances lol don’t suppose you have a 64 nose laying around?

Do yourself a favor and ditch the Slim Jim for a TH400. It’s a pretty straight forward conversion.

[CatalinaWMixxer]

Is there an adapter plate I would have to buy?

[Keith Seymore]

Originally Posted by CatalinaWMixxer

Is there an adapter plate I would have to buy?

Some combinations:

If your starter mounts to the block, and you find a BOP pattern TH400 - then no.

Starter mounts to block, Chevy pattern trans - yes.

If your starter mounts to the trans:

BOP TH400 - you would use a starter mounting plate. You could purchase one, or fabricate one your self based on plans in Pete McCarty's book.

Chevy pattern trans - yes.

I have a '67 Buick TH400 in my '63 Grand Prix, by using a starter mounting plate.

K