Do all 350ci GTAs come with 140mph speedos? mine has 120mph. I can send pics of RPO codes in console if needed.

I thought they did. My '89 350 came with the 140. What is the redline on the tach?

Redline is 5 grand on the tach. Yellow starts at 4500

I don't think so,I have a 120 speedo out of a 88 TA that had a 350EFI in it,the RPM's red lines at 5000,Oranges at 4500.I don't know the RPO code for it.My 86 has a LB9 with the 140 speedo and RPM Gauge that red lines at 5500,Orange's at 5000 and the RPO code is U21

Yes all 350 cars would have come with the 140 or 145 speedo...

All LB9/M5 cars and all 350 cars from 87-92

John

These are the nos.on the speedo I got from a 88 TA with 120 mph,It had a 350 in it.Can you decipher them.?

http://www.3rdgenformula.com/allyear...tachcombos.htm

I did this research years ago, this information was gleamed from the Parts & Illustration catalogs for Firebirds... Also Seems to be consistent with the Camaro.

1988 only: From Firebird Parts Catalog:
25086569 5.0F W/2.73R (GU2) (EXC U18, U52, Z49)
25086569 5.0E (EXC U18, U52, Z49)

The 350 came with any of the following, depending on Export
25086571 - W/O Digital or Export to Canada Z49
25086564 - Digital W/O Export to Canada Z49
25087993 - W/O Digital or Export to Canada Z49
25086567 - Digital Canada
25086575 - W/Z49 (Canada) W/O Digital U52
25087997 - W/Z49 (Canada) W/O Digital U52

Hope that helps

The one I posted isn't listed.

I wonder if John made a typo with the part number as I see no 25089569 but his information does apply to the part number 25086569 that you have on your sticker. My parts book says that's for a 5.0L TPI with the 2.73 gears or a 5.0L TBI - just as he posted above.

Are you sure that the 1988 TA you took that cluster out of had the 350TPI from the factory? Those cars aren't very commonly found to begin with.

I have some records of a 1987 TA with the 350TPI (factory) and with its GH3 (2.77) gears it has the 140mph speedo.

I know the TA was a 350 TPI,the neighbor never said the engine was swapped out,I'll check with him tomorrow to be absolutely sure.

Which is the RPO code for the speedo? I can't figure that out. I will check mine and see what it is. That would be on a 89 GTA.

I made a typo, fat fingered 9 instead of 6... I did not notice it probably because of dyslexia...

I will say that this probably leaves you with a couple possibilities:
1) The wrong inst cluster was installed at the factory (unlikely but possible)
2) the Car was actually a 5.0 not a 5.7 (Most likely) Check the VIN... 1G2FW21F or 1G2FW218
3) Someone swapped out the IP from another car.... Could be, I have had Odometers go bad, especially the trip odometer. But why they would not just repair the problem is beyond me... The electronics inside are basically the same for all cars, you can plug and play

The IP was intended for the 5.0

AFAIK there is no specific RPO on the SPID for IPs. The "ZF" in this case would be traced back to the Build sheet as a quick reference for the line worker installing the IP. the ZF, ZCC, ZCA or whatever 3 Letters is on the IP should not be confused with an RPO (although it might be in some instances) it is not an RPO that would be found on the SPID...

If by chance there was a need to replace the IP, the dealer would look at the part number on the part for the correct replacement, more than likely they would send it off to specmo or some other company to have it serviced... Almost all mechanical IP's are basically interchangeable from 86-92...

Hi John,I still haven't seen my neighbor yet to ask about the speedo but it may have been swapped out,the reason I say is his car was beat to death,(blown engine and the condition of the car)and this cluster that came out of it only has 68,000 miles on it(that's a rough 68,000 mi.)for the condition of the car.As far as the RPO code,I have code U21.

on my SPID,witch says Cluster-Instrument,Oil,Cool,Volts,Tach.

U21 would have been the generic gauge package, U52 would be the digital gauges. U21 really does not denote the differences between engines, transmissions, destination etc. it only denotes that you got the gages, not the digital dash. If you look at the parts catalog there is something like 20 different Instrument panels part numbers available in 1988 for different gauge packages, I believe that 1988 was the first year that the gauge package was standard... Every car (with the exception of the U52 cars) would have had the U21... My point was that there was no specific RPO for the specific Instrument panels. For example A 350 Auto, or the 305/M5 or the V6 would have all had different instrument panels, but all had the U21 RPO with the gauge package.

Does that make sense?

I get it!!

John,would it have anything to do with WS1(Performance Package)??WS1 & WS6 are both listed as Performance Packages

Well I've been researching the 1st owner so I think I ll give him a call and see what the story is on the car. It's so clean it can't be a high miler. If it is somebody lost his a** spending $$ making it look like its not. Lol Thanks for the info guys

WS1 was a "Value Package"