Factory roller cam?
04-06-2008, 01:12 PM
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Factory roller cam?
Hey fellas. New poster here. I've got a question. Does my 85 Iroc-z 305 TPI have a factory roller cam? Also, are the disc brakes on the rear axle rare? Thanks
04-06-2008, 08:29 PM
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Car: 85 Iroc-Z
Engine: 383 TPI Procharger D1SC
Transmission: TKO600
Axle/Gears: Strange S60 3.73
Re: Factory roller cam?
TPI's started coming with factory roller cams in 1987. Assuming yours is all stock, it wont have a roller cam.
04-16-2008, 07:15 AM
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Car: 85 IROC Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: Factory roller cam?
My 85 Iroc has drum brakes on the rear. I dont know if disc on the rear are rare, but I would def want them.
04-18-2008, 01:43 PM
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Car: 1991 Z28 vert, 1988 GTA
Engine: 305 TPI, 305 Carb-finally runs!
Transmission: TH-700R4/BW WC T-5
Axle/Gears: 3.73 posi 4th gen 10-bolt/BW 9 bolt
Re: Factory roller cam?
You can have rear discs on an 85, but the setup-from what I understand-is sorta a crap system. I have heard of the calipers seizing up easily. Also, they are smaller than the later BW 9-bolt setups, which had aluminum calipers and larger rotors. I would switch to that if possible.
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