I have a 84 Pontiac Grand Prix Brougham. It originally came with a V6, but replaced it with a 455 with a 350 transmission. Of course u know the brougham doesn't come with bucket seats. And it has the gear shifter on the steering wheel collum. I want to install bucket seats and a center console with a floor shifter. Have anyone ever done this conversion? Is it a easy installation? Will an 80's model Monte Carlos console fit or do it have to be from a Grand prix? Finally, what kind of transmission do u recommend I swicth to or could I used the same one? Any help on this subject will be greatly appreciated.
What's up Everynoe?
- Thread starter Ivan
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If the th350 transmission is in good shape you might just keep it especially if you don't drive out on the highway a lot. The conversion is definately do- able but I don't know whether or not you can use the monte cluster. I am a big fan of a mildly built 200-4r overdrive tansmission for these cars especially for a hot, real, I'll drive it to an out of state carshow if I want streetcar. Find a healthy one out of a GN/Ttype/442/or MCSS and you can get by with a GOOD shift kit such as the one CKPerformance sells ($99) and a large cheap transmission cooler.
Check out www.robertpowersmotorsports.com for some ideas. Bob ran a 455 Olds "street car that I run on the track not racecar that I run on the street." He had a pumpgas setup with AC, cruise, power brakes & power steering that ran 12.3 at 110mph and got 14.5mpg before being stolen and he wasn't done tuneing it. Oh yea welcome to the site.
Check out www.robertpowersmotorsports.com for some ideas. Bob ran a 455 Olds "street car that I run on the track not racecar that I run on the street." He had a pumpgas setup with AC, cruise, power brakes & power steering that ran 12.3 at 110mph and got 14.5mpg before being stolen and he wasn't done tuneing it. Oh yea welcome to the site.
welcome to the site. it sounds like a good car you have there.
if you still have the V6 (2.41) rear gear i'd definately replace that, you will notice the difference. i'd go with a 3.42 or 3.73 with an overdrive 200r4. 3.08 or so with a th350. the 350 is a great trans, one of the mopst popular in drag racing. for street, or mixed driving, a properly built 200r4 will do extremely well and will give you good low RPM cruising on the highway.
if you still have the V6 (2.41) rear gear i'd definately replace that, you will notice the difference. i'd go with a 3.42 or 3.73 with an overdrive 200r4. 3.08 or so with a th350. the 350 is a great trans, one of the mopst popular in drag racing. for street, or mixed driving, a properly built 200r4 will do extremely well and will give you good low RPM cruising on the highway.
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