I ran across a front brake caliper from a Chevrolet Celebrity at the junkyard recently and it looked very similar to what the Fiero uses. Does anyone know if these calipers interchange with the Fiero? If so we can save a lot of money as rebuilt units are less costly .

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Hey Dennis, I don't know the year Celebrity you saw but I just searched Rock Auto and here are the results.

(FRONT CALIPER)
BUICK CENTURY 1983-1996
BUICK ELECTRA 1985-1990
BUICK LESABRE 1986-1991
CADILLAC DEVILLE 1985-1990
CADILLAC FLEETWOOD 1985-1990
CHEVROLET CELEBRITY 1983-1990
CHEVROLET LUMINA APV 1990-1991
OLDSMOBILE 98 1985-1990
OLDSMOBILE CUTLASS CIERA 1983-1996
OLDSMOBILE CUTLASS CRUISER 1987-1992
OLDSMOBILE DELTA 88 1986-1991
OLDSMOBILE SILHOUETTE 1990-1991
PONTIAC 6000 1983-1991
PONTIAC BONNEVILLE 1987-1991
PONTIAC TRANS SPORT 1990-1991

I also looked up Fiero 84-87 and 88 and they don't show any interchange whatsoever.

So the search continues.....

Spoon

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"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut

quote Originally posted by Spoon: Hey Dennis, I don't know the year Celebrity you saw but I just searched Rock Auto and here are the results. (FRONT CALIPER) BUICK CENTURY 1983-1996 BUICK ELECTRA 1985-1990 BUICK LESABRE 1986-1991 CADILLAC DEVILLE 1985-1990 CADILLAC FLEETWOOD 1985-1990 CHEVROLET CELEBRITY 1983-1990 CHEVROLET LUMINA APV 1990-1991 OLDSMOBILE 98 1985-1990 OLDSMOBILE CUTLASS CIERA 1983-1996 OLDSMOBILE CUTLASS CRUISER 1987-1992 OLDSMOBILE DELTA 88 1986-1991 OLDSMOBILE SILHOUETTE 1990-1991 PONTIAC 6000 1983-1991 PONTIAC BONNEVILLE 1987-1991 PONTIAC TRANS SPORT 1990-1991 I also looked up Fiero 84-87 and 88 and they don't show any interchange whatsoever. So the search continues..... Spoon

I would say that the difference between those named above and the Fiero calipers is probably small. The brake hose connection for the more common caliper appears to be at the rear not on the top so a different brake hose may be needed But will it fit the knuckle? Until we have the units side by side we won't know.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 09-03-2019).]

The last rebuilt rear caliper I bought had the wrong hardware for mounting the parking brake cable. Not a problem, I just swapped them over. But that indicates to me that the Fiero caliper was used on other cars, just with different hardware. I think cross referencing would not work because of the different hardware, but it doesn't mean there are no similar calipers out there.

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86 GT built 2.2 ecotec turbo
rear SLA suspension
QA1 coilovers on tube arms

Just an FYI: I've used 84 Chevy Citation front calipers on my fieros, just swap the them left to right on the rear. Yep, no park brake stuff.

The rotor specs for the caliper will give you a lot more info too.

quote Originally posted by Rick Morehouse: Just an FYI: I've used 84 Chevy Citation front calipers on my fieros, just swap the them left to right on the rear. Yep, no park brake stuff.

Did you have to change the rotors?

Celebrity and Citation used vented rotors, so yes you would need to swap. You would want the non-HD Celebrity parts.

[This message has been edited by RacerX11 (edited 09-06-2019).]

quote Originally posted by RacerX11: Celebrity and Citation used vented rotors, so yes you would need to swap. You would want the non-HD Celebrity parts.

If the Celebrity /Citation rotors are different, I assume that the thickness is the issue. Also do you know if the bolt pattern on those rotors is 5 x 100, the same as the Fiero?

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

All of these 5x100mm rotors and calipers we are talking about are essentially the "Grand Am" brake upgrade for the 84-87... This is nothing new.

84 Citation Rotor:


88 Celebrity Rotor (light duty with 5x100mm pattern)


88 Grand Am Rotor (5x100):


88 Celebrity Rotor (heavy duty with 5x115mm pattern)

[This message has been edited by fieroguru (edited 09-07-2019).]

Looked at the specs for the Citation Rotors and they look like they would not bolt right on (no bearing hub) but provide the proper wheel spacing. The Grand AM rotors are entirely different than the Citation rotors but again the Fiero hub needs to be cut to fit these on.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 09-08-2019).]