What speedo does a T5, 305 IROC have?
Thread Starter
Senior Member
Joined: Oct 2006
Posts: 512
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From: PA
Car: '92 Camaro Z28
Engine: 305 TPI
Transmission: Built 700R4
Axle/Gears: Unknown 9 Bolt Posi, 3.73s
What speedo does a T5, 305 IROC have?
Was wondering if it's different from an RS or Z28...
-Peace
-Peace
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: What speedo does a T5, 305 IROC have?
It depends on the year. 82-89 speedos are 2000 pulses, while the 90-92's are 4000 pulses.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
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: What speedo does a T5, 305 IROC have?
82-89 are mechanical, 90-92 electrical.
JamesC
JamesC
Thread Starter
Senior Member
Joined: Oct 2006
Posts: 512
Likes: 0
From: PA
Car: '92 Camaro Z28
Engine: 305 TPI
Transmission: Built 700R4
Axle/Gears: Unknown 9 Bolt Posi, 3.73s
Re: What speedo does a T5, 305 IROC have?
What I meant was, what MPH did they have? 140? 145? 110?
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
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: What speedo does a T5, 305 IROC have?
My 85 IROC came equipped with a lowly 85 mph speedo.
JamesC
JamesC
Supreme Member
Joined: Aug 2005
Posts: 3,004
Likes: 4
From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
Re: What speedo does a T5, 305 IROC have?
One of my 84s came with the airplane speedo and the other one had a 140mph!
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Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: What speedo does a T5, 305 IROC have?
Yes on the Camaros. The Firebirds are 82-85 mechanical, 86-92 electrical. I just have to say that so nobody else does. 
The TBI and 305 automatics usually have the 110 mph speedo. The 305 5-speeds and 350's usually have the 140 mph speedo. I think it was 1986 or 1987 that the speedos were allowed to read higher than 85 mph.

The TBI and 305 automatics usually have the 110 mph speedo. The 305 5-speeds and 350's usually have the 140 mph speedo. I think it was 1986 or 1987 that the speedos were allowed to read higher than 85 mph.
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