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- - RPO code question.. (https://67-72chevytrucks.com/vboard/showthread.php?t=303795)

Albatrossian

08-21-2008 06:58 PM

RPO code question..

I was looking over the build sheet of my 81 GMC and found a couple of codes that I couldn't find an answer for. They are 30P and MX1. I did find one site that said 30P was a wheel color called Med. Adriatic blue and all the sites I looked at for MX1 was MERCHANDISED, TRANS, AUTO PROVISIONS. What in the world does that mean?

Captkaos

08-22-2008 02:16 PM

Re: RPO code question..

MX1 = TH350
I don't know what 30P is, but it is supposed to be a wheel color.
30P = WHEEL COLOR MED ADRIATIC BLUE (94)

jblucolar63

08-22-2008 02:37 PM

Re: RPO code question..

I got one for you all....GQ1 rear-axle standard. What is the gearing on it? It is a 1981 2wd Blazer it has a factory tow package if that helps. I know I can take the cover off and figure it out just thought since we are on this subject mabye someone might know.

Captkaos

08-22-2008 02:40 PM

Re: RPO code question..

Generally it is going to be 2.73's for 81-87 and 3.08 for 73-80.

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