85 grand prix build
- Thread starter Ponchogp
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I wish mine had t tops..... however I do have a nifty aftermarket sunroof that luckily does not leak!
Nice GP and nice to see another Poncho. I have a 81 Lemans with a Pontiac 400, 200r4 and 3:42's Nothing outrageous just a fun street car. Here is a little info for your swap plans.
First you will need a set of 265/301 Gbody motor mount brackets to sit the engine in properly. F body mounts sit the engine up too high according to others.
With the exeption of MadDog headers, no one makes a bolt in header for Pontiac powered Gbodies. Maddog's are well made but expensive. 3 tube f-body headers can be made to fit but usually require some level of modification on the driver side. passenger side is usually fine. I went with reproduction 66-67 GTO ramair manifolds with the 3 bolt flange and mandrel downpipes from RamAirRestorations and they fit perfect.
Use the powersteering pump from a 265/301 gbody along with the fan shroud.
The rest is basic cut/fit/paste like anyother engine swap. As a personal choice, I kept the columm shift and the linkage bolted up fine.
If you have any questions, hit me up and above all, have fun.
First you will need a set of 265/301 Gbody motor mount brackets to sit the engine in properly. F body mounts sit the engine up too high according to others.
With the exeption of MadDog headers, no one makes a bolt in header for Pontiac powered Gbodies. Maddog's are well made but expensive. 3 tube f-body headers can be made to fit but usually require some level of modification on the driver side. passenger side is usually fine. I went with reproduction 66-67 GTO ramair manifolds with the 3 bolt flange and mandrel downpipes from RamAirRestorations and they fit perfect.
Use the powersteering pump from a 265/301 gbody along with the fan shroud.
The rest is basic cut/fit/paste like anyother engine swap. As a personal choice, I kept the columm shift and the linkage bolted up fine.
If you have any questions, hit me up and above all, have fun.
Thankyou much I will now be getting those headers I've been looking to find the right ones!!!!!! Yeah I'm keeping the column shift....mostly bc I'm just running out of money on this thing.... transmission was cheap and low miles.... the rear I'm doing a ford 9 with 3:73.... the 350 was not my first choice but it came out of a friends dads garage.... with the bore.... #16 heads, good exhaust, and the cam ... im hoping I can pull upwards of 350 hp.... but prolly dreaming , lol
don't forget Pontiac engines make lots of torque at low rpm's. That's why they are so much fun. My 400 has 6x heads with mild porting, performer intake with qjet and a new cam from Butler (262/270 total duration, 218-224 at .050 with 462/470 lift) along with roller tip rockers. That should put me in the 350/360 hp ballpark but with about 450 ft/lbs. High horsepower is fun but it depends on how you drive it. I put about 10-12k kms on it every summer and drive it everywhere.
Nice! I had the 6x4s the best bnb I could tell the #16s old 16s ... push up compression 9:1 or better with the cam, ram air manifolds, and bore like I said if I'm close to 400hp I can handle it.... my hemi has 375.... my old monte had 400 hp . I'm not going to take much risk just want something that can hold it own to modern builds... I'm no vin diesel lol .... just trying to do it right one time...
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