So here is the question. Will the caliper from the grand am brake upgrade bolt to the 88 fiero rear knuckle? I have one each crossmembers an 88 and an 85 and I have all the parts for the grand am upgrade. The 88 rear suspension is better but brake parts are expensive. So what I was thinking of doing was bolting the grand am caliper to the 88 knuckle that way I get the better suspension and get to use cheaper brake parts. So anyone know if the combo works? That's in advance

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ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK
12.3 is faster than a 13.2

It will not bolt on - the mounting bolt spacing is wider than the 88.

quote Originally posted by olejoedad: It will not bolt on - the mounting bolt spacing is wider than the 88.

Correct!

You can use the cheaper Grand Am rotor on the 88 rear (just not the 88 front - unless you turn down the OD of the wheel bearing flange)

So i can use it on the rear. That was my question i guess i worded it wrong, sorry. Use an 88 rear cradle with grand am front calipers bolted to the 88 rear knuckles on my 85gt. The front will be standard 85 suspension with grand am brakes.

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ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK
12.3 is faster than a 13.2

You can use the GA rotors on the '88 rear, but not the calipers.

I guess my previous post was confusing. I confirmed that the calipers will not work, but then shared that the rotors will (on the rear).

Nah Guru I read it wrong. I had the dumb yesterday........

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ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK
12.3 is faster than a 13.2