145 Speedo Swap, What's Involved
145 Speedo Swap, What's Involved
Is there much to it? What parts would I need? How labor intensive is it? Thanks.
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'85 Z28 Copper/ Gold, LG4 Auto
dual snorkel w/ ram air, Accel Cap Rotor and 8MM wires, Edelbrock Headers, Catco Cat, Flowmaster 80 series, 3:23 rear
American Racing Wheels.
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'85 Z28 Copper/ Gold, LG4 Auto
dual snorkel w/ ram air, Accel Cap Rotor and 8MM wires, Edelbrock Headers, Catco Cat, Flowmaster 80 series, 3:23 rear
American Racing Wheels.
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
There's not much to the swap. You need the cluster and/or speedo head. The whole swap is, perhaps, a 45-minute job if you've never done it and are careful. Remove the black plastic bezel and two nuts at the left and right bottom of the white plastic gauge housing. Drop the kick panel (and if I were you, I'd also drop the steering column a 1/4 inch or so). Contort yourself and using a long-bladed screw driver, trip the device that secures the speedo cable to the speedo head. Work the cluster out--and there you are. You might consider swapping the stock bulbs out with krypton/xenon bulbs which are double the intensity. White-faced gauges overlays from McEwen Motor Sports are also an option.
JamesC
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JamesC
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Supreme Member

Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
I'd say it will probably be easier than your header install!
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Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand.
Starting to look like the Kicker poster child!
ASE Certified Master Tech
------------------
Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand.
Starting to look like the Kicker poster child!
ASE Certified Master Tech
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