my buddy is selling his drilled and slotted rotors along with his alipers... I was wondering if the rotors would fit my gp or would the bolt pattern would throw it off? Feedback is appreciated
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05-22-2010
my buddy is selling his drilled and slotted rotors along with his alipers... I was wondering if the rotors would fit my gp or would the bolt pattern would throw it off? Feedback is appreciated
05-22-2010
yes they will fit.. buy the calipers too and do a complete brake swap...if u dont get calipers... u will need at least mounting brackets from a firebird or monte carlo.
Originally Posted by SuperSport
05-22-2010
alright thankss!! Does this work with the back brakes as well?
05-22-2010
no
You need the calipers, brackets, rotors and pads.
and you either have to drill and tap the bracket holes to accept the GP bolt or use the sleeve method.
05-23-2010
why couldnt i just use the f-body banjos?
05-23-2010
I take that last question back. I thought about it for a min and realized.
05-23-2010
The bolt pattern on a Trans Am is different than on a Grand Prix. You might want to double check to see if it will fit. Hold one of the rotors up to one of your wheels and see if the lugnuts will line up with the holes in the rotor.
05-23-2010
The fronts fit for sure...
05-23-2010
Not trying to argue, just asking since I don't understand, but how does a different bolt pattern fit over our hub? Are the holes ovalled to fit different bolt patterns or do the F-body rotors have two different sets of holes to fit different bolt patterns?
05-23-2010
They're the exact same bolt pattern.
Thats an issue you're making up.
05-23-2010
That's what Im trying to figure out but I am getting different answers. I will be trying it out and will let you know asap.
05-23-2010
Holy **** balls, they're different.
They're 5x 120.7
This makes no sense now.
GP's are 5 x 115. But ever notice how much play there is around the lugs with the holes in your rotors?
05-23-2010
Apology accepted. I try not to talk out my *** and look things up if possible. There is play around the holes but I don't know if they will make up that much difference. What is the diameter of the hole for the hub? Most rotors fit snug on the hub to hold them centered and this could be an issue as well.
05-23-2010
im fairly certain that the impala uses the same rotors as the F body's yet has the same bolt pattern as the GP as well as the same hub size.
05-23-2010
Apparently internet forums are not the only places to find disagreements on this subject. I went to rockauto and looked up rotors for both the Trans Am and the Grand Prix and looked at the drawings provided by Centric for the rotors on both of these cars. They match every spec except outer diameter. However, they show both rotors having a 5 x 4.65" bolt pattern which would be about 5 x 118mm. Maybe your idea about the holes being a little larger to accomodate two different sizes is dead on? Anybody have first hand experience trying to fit F-body rotors onto a GP?
05-23-2010
yea i feel kinda stupid... i always thought they were exact same as newer monte carlo with the 11.9 rotors... google says its not....
Originally Posted by SuperSport
05-23-2010
the holes are a lot larger so they can go on a bunch different cars. put the rotors on and play with them a little to see what we mean. they have a ton of play.
05-23-2010
this makes sense... i was under teh impression i had F body rotors on car when i bought it... they have alot of play in them but have worked fine up until now. the powerslots i just bought and havent installed yet looks like the holes are smaller. and i bought for 2005 monte
Originally Posted by SuperSport
05-24-2010
F-body rotors and the 00-05 impala/monte 12" rotors are the exact same. Same part number and everything.
The holes are drilled with a lot less tolerance then the wheels.
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