1986 Gbody frame. Replace 2door frame with 4door frame. Possible?

[Thom Buckley]

Rear frame rails rusted away. To do frame off. Can find 4 door G at reasonable price , no 2 doors locally. Would be sweet if this will work

 

[Texas82GP]

It's been done. The front frame horns are a different length so it takes some welding. Check out the bottom of page 11 of this thread......
https://gbodyforum.com/threads/81-oldsmopile-g-body-rust-repair.55800/page-11
The front frame horns need to be lengthened.

 

[EME_Mack]

I have a 4 dr frame going under my 2 dr. It will drop right on and line up, except wagons and elcominos had variations that wont work. Id also measure the lenght in front of the rad support. From the front body mount hole to the bumper mount flange on the frame side. There are some differences depending on the model. My 4 dr frame was 2" shorter then my 2 dr cutlass frame. And i believe the monty and GP frame were a little longer in the front aswell

 

[EME_Mack]

Lol Texas beat me too it and with my own thread no less

 

[pontiacgp]

I have a 4 dr frame going under my 2 dr. It will drop right on and line up, except wagons and elcominos had variations that wont work. Id also measure the lenght in front of the rad support. From the front body mount hole to the bumper mount flange on the frame side. There are some differences depending on the model. My 4 dr frame was 2" shorter then my 2 dr cutlass frame. And i believe the monty and GP frame were a little longer in the front aswell

I have a 1980 Regal frame under my GP and it fits no problems. All G body frames are the same, wagons have different body mount locations behind the rear axle and the C section part of the frame is longer in an El Camino

 

[mr evil]

Lol Texas beat me too it and with my own thread no less

Lol, well at least you know people are paying attention to your progress

 

[Rick_B_86]

If it's just the rear that's rusted away, you can get new rear sections and weld them in. That's what I did on mine.

 

[L.A.X-RATED]

great cond rear frame rails---137.28 shipped.pm me if interested.

 

[grandamman]

From what I've seen and heard, not all 2 door and 4 door frames are the same.

Appears that all 4 doors, all Grand Am, Lemans, Grand Lemans and Malibu have the shorter front frame horn.

Grand Prix, Monte and sounds like the Regal had the slightly longer front frame horn, as does the El Camino.

The difference is only about an inch and a half