1975 Pontiac Bonneville

[Roger Phipps Sr.]

I'm new here so bare with me.
I have a 1975 Bonneville that I'm planning on removing the body (it's all rusted out) and putting a 1950 Dodge pickup on the frame.
Has anyone here done this???
I've been searching for frame dimensions on the Pontiac so I could do some comparing, but not having much luck.
Any help would be great.
I really want to get this project started, but would like to do the homework first.
Thank you !!!

 

[pontiacgp]

a 75 Bonneville was a B body and larger than the G body....

 

[Roger Phipps Sr.]

a 75 Bonneville was a B body and larger than the G body....

Which means ????

 

[pontiacgp]

Which means ????

I don't know who on here would have the info you're looking for.

 

[Roger Phipps Sr.]

I have the frame dimensions for the Dodge pickup.
I need them for the Bonneville.

 

[pontiacgp]

I have the frame dimensions for the Dodge pickup.
I need them for the Bonneville.

I understand that but this forum is all about G body, not B body. From what I have read the truck body you have had a 108" wheelbase and the B body has 116" wheelbase so I don't how you are going to make that work.

 

[81Regal]

Without cutting the frame on the bonnie the dodge body won't fit. Around here it's fairly common to use 78 to 87 g body (monte carlo, malibu, cutlass, regal) frames under street/rat rods.

 

[Roger Phipps Sr.]

I don't plan on using the truck bed, going flat bed. The Bonneville has the 455 ci and it runs, only 78000 miles.
I realize welding some tabs and mounts will be necessary. Just would like to find the frame measurements so the planning can be done ahead of the work.

 

[CartmanTD]

To be totally honest, you're best bet would be to find an 84-03 S-10. That is the most common frame used and you can get any motor to fit that chassis. I know for a fact the Pontiac motor will fit if that's definitely what you want to use, I would. Also with it being a truck frame you're already ahead of the game.

 

[Bonnewagon]

Here's what I've got. These specs are from my '82 Buick factory manual and are for a 1982 Buick "B/C" body. I'm pretty sure the '75 Pontiac is a bit larger, as I had a '76. What a tank. That's where I got my 455 and may I compliment you on your choice of power plants. Anyway here are the dimensions just to give you some ballpark figures.