• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

bonneville trans in a grand prix?

M

M.$tErNeR

New member
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
 
Last edited:


that seems mostly what im reading.do you know if the different gearing will mess anything up though? as long as it operates properly and doesnt cause any issues with the computer
 


Won't fit? WTF? 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
 
Now you guys see why i was confused.lol A lot of people saying the complete opposite things. Just to clarify L67 is the non s/c 3800's right? I didnt mean to cause a big ruckus but there must be somebody out there who has done this and knows firsthand whether it works or not.
 


Won't fit? WTF? 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
Click to expand...


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:th_thumbsup-wink:
 
Last edited:
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.
 
You must log in or register to reply here.
Back
Top