Thread: bonneville trans in a grand prix?

Hey guys, got a question im a bit unsure of.recently picked up an 2000 bonneville for parts. i needed the motor for my 98 gp, but the bonneville ran good and shifted good.i was just going to sell the transmission but now im considering keeping it as a backup for one of my 2 grand prixs. if not ill sell it or pick up another vehicle to use it in.i know the trans is a 4t65e but thats about it. And its supposed to be the m15, not all to sure what all that entails though?what other applications does the bonneville fit in? ive read a few things i found online but nothing is to clear cut and its from untrusty webpages like wikipedia and such.has anybody on here ever tried using a bonneville trans or know what other vehicles it fits? any help would be greatly appreciated.thanks

It should work but you can't swap a gp trans into the bonnie

Won't fit? ? It's the exact same trans, same mounting bracket as well

Only difference, as already stated is gearing. But that only applies to the L36 powered Bonnes vs the L36 GP's. As all L67 powered cars have 2.92 gears

Originally Posted by kfish

^ not true, an intrigue with an l36 has 2.84 gears.

Thank you for further clarifying my point. You will see I already specified that. Only gear ratios affected would be with L36 powered vehicles

L67 is the supercharged motor.

Won't fit? ? It's the exact same trans, same mounting bracket as well

Only difference, as already stated is gearing. But that only applies to the L36 powered Bonnes vs the L36 GP's. As all L67 powered cars have 2.92 gears

ru serious dude only differance?? a grand prix has a external mode switch. a bonneville is internal get your facts straight i own both cars

The case could also be different, but that's irrelevant for going INTO the GP.

The only real issues will be gearing and the cooler line fittings. GM switched from threaded to quick connect fitting during the 99 model year, but that has nothing do with bonne vs. GP.