My 78’ Pontiac GP/SJ 454 build

[383_GrandPrix]

 

[78BB-Pontiac]

Nice
clean GP you have there. Someone took the landau top off my SJ, luckily they had the bigger opening non landau inner quarter window panels in the trunk when I got my car. Looking on line there isn’t much out there for these cars if it wasn’t on another GBody.
I have two sets of the smaller landau inner quarter window panels if you know anyone that needs a set?

 

[Jay.D]

Thanks, the car looks a lot better in the tiny photo than it is; someone put a gallon or two of Bondo in the car and it's starting to fall out.

I actually have two complete interiors so I don't need them, and I don't know anyone else with a GP.

Nope, no bondo in that car. Someone put a real shitty garage paint job on it. Been over that entire car with a magnet and nothing. If you look at some of the pics I’ve posted of trunk. You’ll see how clean that car is.😉

 

[78BB-Pontiac]

Thanks, the car looks a lot better in the tiny photo than it is; someone put a gallon or two of Bondo in the car and it's starting to fall out.

I actually have two complete interiors so I don't need them, and I don't know anyone else with a GP.

Please show me where the bondo is on my car?🤣😂🤣😂🤣😂🤣😂🤣😂

 

[383_GrandPrix]

Nope, no bondo in that car. Someone put a real shitty garage paint job on it. Been over that entire car with a magnet and nothing. If you look at some of the pics I’ve posted of trunk. You’ll see how clean that car is.😉

I was talking about mine haha. That's a real nice car you got there, looks really straight!

 

[383_GrandPrix]

Please show me where the bondo is on my car?🤣😂🤣😂🤣😂🤣😂🤣😂View attachment 115551View attachment 115552View attachment 115552View attachment 115551View attachment 115554View attachment 115551View attachment 115553View attachment 115555View attachment 115556

I was talking about the Bondo in my car, thought that post was directed at me seeing as you quoted me.

 

[SSpev]

Nice looking GP!!! you are spot on with a head change. That is an 76-85 ish truck block. The numbers starting with 1....... are later castings. NO cars got 454 after 76🤔i suspect with the iron heads and probability of flat tops you are about 8 CR. Those head likely are about 122 cc. I believe they are 83 heads. original to engine? cam from an 83-4 truck then.
New heads 9.5 CR RPM intake Oh yea! transmission and rear end next👍

 

[-83MONTESS-]

The good thing about having a real low compression engine to start out is that a simple head swap will change everything. I never really understood the effects on more compression until I helped a buddy swap out heads on his 383(Mopar) to lower CC aluminum heads. Was a night and day difference, even the sound.

 

[78BB-Pontiac]

The good thing about having a real low compression engine to start out is that a simple head swap will change everything. I never really understood the effects on more compression until I helped a buddy swap out heads on his 383(Mopar) to lower CC aluminum heads. Was a night and day difference, even the sound.

Love the dimebag pic! To bad about Big Vin.. Those guys were awesome and lived life to the fullest.

 

[-83MONTESS-]

Love the dimebag pic! To bad about Big Vin.. Those guys were awesome and lived life to the fullest.

Damn right they did! They lived the ultimate dream!