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10-16-2007, 08:16 AM
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#1 |
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Chevy nut
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
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RPO Codes
Cant seem to yahoo or google them. I am looking to find out what gears I have in the rear end of my 69. 4G80AA Is the RPO for my truck. Any ideas where to look?? Anyone know what gears I have?
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84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" |
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10-16-2007, 10:55 AM
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#2 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,730
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Re: RPO Codes
G80 is posi. What engine and trans do you have?
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10-16-2007, 11:00 AM
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#3 |
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Registered User
Join Date: Sep 2005
Location: Smith Mountain Lake Virginia
Posts: 1,537
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Re: RPO Codes
I bet the majority of replies are going to say "pull the cover and get the numbers off it"
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"A cat will almost always blink when hit between the eyes with a ball peen hammer" (you don't always have to state the obvious) Wear your PPE! You can eat with false teeth but you can't see with a false eye. 1959 Studebaker Silverhawk 350/400 1972 C10 L6 3OTT 2005 F350 - Built - whew! |
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10-16-2007, 02:59 PM
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#4 | |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: RPO Codes
Quote:
If there is no optional gear listed, then it has a base gear. Depending on engine, tranny, and what serries your truck is, there's a few base gears. |
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10-16-2007, 04:40 PM
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#5 |
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Chevy nut
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
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Re: RPO Codes
Its got a 350 with 3 speed. Thats what it came with. The original 350 is gone with a 74 350 in its place.
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84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" |
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10-16-2007, 06:18 PM
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#6 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: RPO Codes
should be a 3.73 gear ratio then... assuming it hasn't been swalled out in the last 37 years
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10-16-2007, 06:27 PM
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#7 |
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member #16
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: RPO Codes
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors  http://www.flickr.com/photos/1745471...7602865984234/ |
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10-16-2007, 07:18 PM
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#8 | |
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Chevy nut
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
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Re: RPO Codes
Quote:
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84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II "Remember kids there is NO replacement for displacement!" |
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10-17-2007, 06:47 AM
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#9 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: RPO Codes
Just to make clear.That RPO you have is only the posi option.Say`s nothing about ratio,that`s seperate.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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