stock gear ratio for a 90 burban? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rcfatcat · 10-18-2009, 03:24 PM

anyone know the stock gear ratios that where most likely to come in the 1990 chevy burbans with 14 bolt rear axle?

ghettoluxury · 10-18-2009, 05:28 PM

Only way to tell what you got is to pop the cover and look on the ring gear

72 CustomCamper · 10-18-2009, 06:34 PM

2 wheel drive or 4 wheel drive? Which engine?

Chuck

rcfatcat · 10-18-2009, 07:38 PM

no idea i think i herd it would be on of three options a 3.73 4.11 or 4.56 but idk which and i dont have the axle i am looking to buy it and the person i am buying it from is lets just say mechanically disabled

72 CustomCamper · 10-18-2009, 08:28 PM

Going by the 1990 brochure looks like the 3 options were 3:73, 4:10 and 4:56...

Dooley · 10-19-2009, 02:30 AM

Check the glove box sticker. I found these as available in a 1990 Suburban.
The likely code for a
3.42 is GU6
3.73 is GT4
4.10 is GT5
4.56 is HC4

10-18-2009, 03:24 PM	#1
rcfatcat Registered User Join Date: Nov 2008 Location: pennington, newjersey Posts: 129	stock gear ratio for a 90 burban? anyone know the stock gear ratios that where most likely to come in the 1990 chevy burbans with 14 bolt rear axle? __________________ 78 k5 offroad project 350 sm465 60/14 np205 boatside, dovenose

10-18-2009, 05:28 PM	#2
ghettoluxury Registered User Join Date: Apr 2009 Location: Waynesfield Ohio Posts: 1,991	Re: stock gear ratio for a 90 burban? Only way to tell what you got is to pop the cover and look on the ring gear __________________ 1949 Five Window, 1973 Step Side, 2000 Z71

10-18-2009, 06:34 PM	#3
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,368	Re: stock gear ratio for a 90 burban? 2 wheel drive or 4 wheel drive? Which engine? Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

10-18-2009, 07:38 PM	#4
rcfatcat Registered User Join Date: Nov 2008 Location: pennington, newjersey Posts: 129	Re: stock gear ratio for a 90 burban? no idea i think i herd it would be on of three options a 3.73 4.11 or 4.56 but idk which and i dont have the axle i am looking to buy it and the person i am buying it from is lets just say mechanically disabled __________________ 78 k5 offroad project 350 sm465 60/14 np205 boatside, dovenose

10-18-2009, 08:28 PM	#5
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,368	Re: stock gear ratio for a 90 burban? Going by the 1990 brochure looks like the 3 options were 3:73, 4:10 and 4:56... __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

10-19-2009, 02:30 AM	#6
Dooley Registered User Join Date: Mar 2005 Location: North Coast Posts: 1,012	Re: stock gear ratio for a 90 burban? Check the glove box sticker. I found these as available in a 1990 Suburban. The likely code for a 3.42 is GU6 3.73 is GT4 4.10 is GT5 4.56 is HC4 Last edited by Dooley; 10-19-2009 at 02:40 AM. Reason: added info.

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