IROC-Z Gauge cluster?
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 8
Likes: 0
From: Pennsville, southern new jersey
Car: 91 GMC 1500 pickup, reg. cab shorty
Engine: 350 5.7 TBI
Transmission: 5 speed manual, HLM60
Axle/Gears: 10 bolt, 3.42 G80 posi. all factory
IROC-Z Gauge cluster?
Hey guys, new member here. I'm a member everywhere else for TBI's so why not here. 
I just went to the u pull it yard with my Dad and I found an 89 IrocZ camaro, 350 TPI/700r4 car. motor/trans gone, beatiful body/interior. car had a borg werner 2.77 rear in it.
It had the 140MPH gauge cluster in it so i grabbed it to make some profit (i'm 15 and broke
)
it has the manual speedo cable which is normal for 89, but on the tach, the YELLOW line starts at 5000 and the RED line starts at 5500. I thought this was a 1985 only thing?
I'm 80% i remember looking at the door jam and seeing it was a 1989.
Whats the deal with this tach?

I just went to the u pull it yard with my Dad and I found an 89 IrocZ camaro, 350 TPI/700r4 car. motor/trans gone, beatiful body/interior. car had a borg werner 2.77 rear in it.
It had the 140MPH gauge cluster in it so i grabbed it to make some profit (i'm 15 and broke
)it has the manual speedo cable which is normal for 89, but on the tach, the YELLOW line starts at 5000 and the RED line starts at 5500. I thought this was a 1985 only thing?
I'm 80% i remember looking at the door jam and seeing it was a 1989.
Whats the deal with this tach?
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: IROC-Z Gauge cluster?
JamesC
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 8
Likes: 0
From: Pennsville, southern new jersey
Car: 91 GMC 1500 pickup, reg. cab shorty
Engine: 350 5.7 TBI
Transmission: 5 speed manual, HLM60
Axle/Gears: 10 bolt, 3.42 G80 posi. all factory
Re: IROC-Z Gauge cluster?
So, its a 350 TPI only thing? i looked at a couple videos of 350 TPI cars on youtube and most of them have the yellow line that starts at 4500.
Supreme Member
Joined: Apr 2002
Posts: 3,552
Likes: 5
From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Re: IROC-Z Gauge cluster?
My 89 has the same tach, yellow starts at 5k etc, it was origionally a 305 tpi car.
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
Junior Member
Joined: Mar 2009
Posts: 35
Likes: 0
From: bad axe
Car: 87 trans am
Engine: 305 tpi
Transmission: auto unfortunately
Joined: Feb 2004
Posts: 1,941
Likes: 30
From: Levittown Pa
Car: 89 Iroc Convertible
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.27 Posi 9 bolt PBR
Re: IROC-Z Gauge cluster?
From what I know all the 350 TPI Cars were equipped with a 5500 redline tach.Other cars that also got a 5500 redline tach were 305 TPI with a 5 speed manual trans and I believe L69 cars also got them
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Thread Starter
Junior Member
Joined: Apr 2009
Posts: 8
Likes: 0
From: Pennsville, southern new jersey
Car: 91 GMC 1500 pickup, reg. cab shorty
Engine: 350 5.7 TBI
Transmission: 5 speed manual, HLM60
Axle/Gears: 10 bolt, 3.42 G80 posi. all factory
Re: IROC-Z Gauge cluster?
So this is a 350TPI, 305TPI/5speed, and L69 cluster??
I just thought i'd buy it and sell it to an RS/base guy to upgrade or someone who has the 4500 yellow line and wants the 5009. I'd hate to see it get crushed, i thought the 5000yellow 5500 red was like rare or something. lol
thegoodold350, yea i can do that.
my82roc, you have a PM back.
I just thought i'd buy it and sell it to an RS/base guy to upgrade or someone who has the 4500 yellow line and wants the 5009. I'd hate to see it get crushed, i thought the 5000yellow 5500 red was like rare or something. lol
thegoodold350, yea i can do that.
my82roc, you have a PM back.
Joined: Feb 2004
Posts: 1,941
Likes: 30
From: Levittown Pa
Car: 89 Iroc Convertible
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.27 Posi 9 bolt PBR
Re: IROC-Z Gauge cluster?
So this is a 350TPI, 305TPI/5speed, and L69 cluster??
I just thought i'd buy it and sell it to an RS/base guy to upgrade or someone who has the 4500 yellow line and wants the 5009. I'd hate to see it get crushed, i thought the 5000yellow 5500 red was like rare or something. lol
thegoodold350, yea i can do that.
my82roc, you have a PM back.
I just thought i'd buy it and sell it to an RS/base guy to upgrade or someone who has the 4500 yellow line and wants the 5009. I'd hate to see it get crushed, i thought the 5000yellow 5500 red was like rare or something. lol
thegoodold350, yea i can do that.
my82roc, you have a PM back.
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 8
Likes: 0
From: Pennsville, southern new jersey
Car: 91 GMC 1500 pickup, reg. cab shorty
Engine: 350 5.7 TBI
Transmission: 5 speed manual, HLM60
Axle/Gears: 10 bolt, 3.42 G80 posi. all factory
Re: IROC-Z Gauge cluster?
Its at $82 on ebay right now
.. that made the trip all worth it
.. that made the trip all worth it Thread
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