Hi,

How hard is it to replace the stock two needle spedo in a 84 SC with the 145 spedo if you get a whole gauge package?

thanx

zed

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1984 Camaro SC, LG4, 700R4, no longer less than 100,000 miles.
125000 miles.
only mods so far=ES Trans Mount, KYB shocks and struts, MOOG Tie Rods and Center Link.

 

Try searching the board for directions, this is a common topic.

Assuming both instrument pods are otherwise the same (ie. not switching idiot lights for gauges), and you don't care about the odometer, you can just pull the old one out and plug the new one right in.

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1984 Silver Z28, 383 cid 4 bolt, ARP Fasteners, 2 1/2" Cowl Induction Hood, 600 cfm Performer Carburetor, Torker II Intake, Performer RPM Heads, XE268H Cam, Magnum Roller Tip Rockers, MSD6AL Ignition, Blaster2 Coil, Recurved HEI Distributor, 700R4, TransGo SK, 2.73:1 Limited Slip Dana 44, Terminator Headers, Custom 3" TIG Welded Stainless Exhaust, Flowmaster Muffler, 4 Wheel Disc Brakes, Oil Cooler

 

I just replaced my 84 Z28's 85 mph speedo with one from a 88 Iroc 350. Just swapped clusters and haven't had any problems at all. All lights & gages work fine.
Randy

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Randy
84 Trans AM LG4, 700R4 T-tops
1984 Z28 L69, 5 Spd, T-tops
"Don't sweat the petty things...Just pet the sweaty things"

 

So you say Randy....have you had it upto speed?

 

hehe. It worked fine when I went to the store the other day.... Only got up to about 50 though.


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Randy
84 Trans AM LG4, 700R4 T-tops
1984 Z28 L69, 5 Spd, T-tops
"Don't sweat the petty things...Just pet the sweaty things"

 

Wolfcast- so you don't have to change the spedo cable and the odometer and everything works fine still? Also, have you checked it for acuracy? Thanks!

 

I didn't bother with the odometer since the new one read 10,000 miles higher than the old one. I have 184K miles on the old one and the car sat for 6 months.
When I drove the car the other day, the speedo seemed to work just fine. I haven't verified it yet. As far as I know the only time you have to adjust the speedo is if you change the rear end gear ratio. I could be wrong though.
Hope that helps.
Randy

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Randy
84 Trans AM LG4, 700R4 T-tops
1984 Z28 L69, 5 Spd, T-tops
"Don't sweat the petty things...Just pet the sweaty things"

 

You won't have to calabrate the new spedo unless the gear ratio from the old car differs from yours. EXample. If you pull a spedo off an 88 Roc with a gear ratio of 3.73 (just guessing) and you put the spedo in a z28 with a gear ration of 3.08. You will have to get it recalabrated

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EMAIL: CTopgun5@aol.com
_______
84' Z28
New 350 Ci 4 Bolt Main with all L69/HO Parts
4 BBl Carb
180º Thermostat
K&N High Flow Filter
700R4 Trans
15X7 Standard Z28 Wheels, With 215/65R15 BF Goodrich Comp T/A HR4 Tires
Charcol in Color
no T-tops, but wish
New Head unit, JVC KD-SX750
New Kenwood 3-Way 6X9's KFC-6906S
New Pioneer Sub TS-W253C
New Jensen 4-Channel Amp XA-4150
As FiremanZ28 says "Friends don't let Friends Drive Mustangs"
Pic of my Z28, thanks to ZZ4 and his web page: Http://www.geocities.com/ukzz4iroc/z28camaro.jpg

 

Ok. I got mine from a 88 iroc 350. Did they come with the 3.73 gears? If so, then I'm ok because my 84 Z28 has 3.73 gears. That might be why mine seems to work fine.
Thanx for the info.
Randy

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Randy
84 Trans AM LG4, 700R4 T-tops
1984 Z28 L69, 5 Spd, T-tops
"Don't sweat the petty things...Just pet the sweaty things"

 

Ok. From what I can gather, the 88 350 came with 3.27 gears. What has to be done to the speedo to recalibrate it?
Randy

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Randy
84 Trans AM LG4, 700R4 T-tops
1984 Z28 L69, 5 Spd, T-tops
"Don't sweat the petty things...Just pet the sweaty things"

 

No, all mechanical speedometers in the F-bodies are calibrated the same. You don't have to recalibrate anything, assuming your old speedo was accurate enough already.