factory 85' iroc-z rear end power

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02-13-2010, 11:03 AM

WILL85IROC

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Location: PITTSBURGH, PA

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Car: 85 IROC-Z Z-28, BLUE & SILVER

Engine: 5.7L & 5.0L

Transmission: 700R4

Axle/Gears: FACTORY

factory 85' iroc-z rear end power

will my factory rear end handle around 400-450 hp/trq? i have 1985 iroc z28, not sure what type gear is has, dont think it was ever changed... thnx

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02-13-2010, 11:32 AM

1MeanZ

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Car: 86 IROC

Engine: 383

Transmission: TKO 600

Axle/Gears: 3.54 Dana 44 IRS

Re: factory 85' iroc-z rear end power

what are you going to do with the car? drag racing on slicks, I'd say you're rolling the dice. road racing or auto-x you'll be fine for a while.

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02-13-2010, 11:34 AM

WILL85IROC

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Car: 85 IROC-Z Z-28, BLUE & SILVER

Engine: 5.7L & 5.0L

Transmission: 700R4

Axle/Gears: FACTORY

Re: factory 85' iroc-z rear end power

nothing special, just beefing up the engine with 18" rims

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02-13-2010, 11:57 AM

JamesC

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Car: Met. Silver 85 IROC/Sold

Engine: 350 HO Deluxe (350ci/330hp)

Transmission: T-5 (Non-WC)

Axle/Gears: Limited Slip 3.23's

Re: factory 85' iroc-z rear end power

Quote:

Originally Posted by WILL85IROC

nothing special, just beefing up the engine with 18" rims

JamesC

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02-13-2010, 12:13 PM

z28freak84

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Location: Bement IL, Champaign,IL

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Car: 1985 IROC-Z Silver

Engine: Vortec 5.7L

Transmission: WC-T5

Axle/Gears: 3.23 disc brake 10 bolt

Re: factory 85' iroc-z rear end power

Quote:

Originally Posted by JamesC

JamesC

I think he meant that he's is beefing up the engine and installing 18" rims....just a quick cruiser.... no auto-x or anything....

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