Ring and Pinion question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lurch115 · 04-03-2008, 07:39 AM

does anyone know of a site that i can look up a ring gear part number and identify what ratio it is??? i really don't want to pull the cover again and count teeth

lurch115 · 04-06-2008, 08:02 AM

anyone??

James McClure · 04-06-2008, 02:20 PM

Lurch. On the top of the right hand axel tube there is a series of numbers and letters. Record them and go to your local Chevy store and they can tell you what it wqas equiped with when it was built. Gears may have been changed, if they were the ID info won't mean anything, so be ware. You can check the ratio without counting teeth but you'll still have to pull the cover. Look on the edge of the ring gear for a series of numbers. Your looking for 4 numbers that look like this "15:41". 15 is the # of teeth on the pinion & 41 is the # of teeth on the ring. Devide 41 by 15 and you got it. It's the only way to be absolutely sure of whats in there, jim

lurch115 · 04-08-2008, 05:39 AM

you mean a series of numbers like

1235401
16411283??

oh, and the truck is original yet minus a few typical maintaince things like plugs, wires, cap and rotor, and the battery....so i am gonna guess that if i go for that number on the axle tube that it will work for me

James McClure · 04-08-2008, 03:08 PM

Lurch: Number on axel tube will; be alphanumeric and is usually under 6" from the pumpkin on the right (passengers side) top of tube. It's going to be difficult to read, age, rust, ect. The numbers on the ring gear will be next to a 7 or 8 didget part number. They are ALWAYS a 4 didget number with a : inbetween the 2nd and third number, like this 15:41. If you have just numbers on the tube or the pumpkin unbolts (no rear cover) it might be a Chrysler or Ford rear. Kind of unlikely but one never knows what a PO did. Hope this helps, jim

04-03-2008, 07:39 AM	#1
lurch115 Registered User Join Date: Oct 2006 Location: iowa Posts: 722	Ring and Pinion question does anyone know of a site that i can look up a ring gear part number and identify what ratio it is??? i really don't want to pull the cover again and count teeth __________________ "Horsepower is how fast you hit the wall, torque is how far you carry the wall with you." '84 chevy half ton short box 2wd, 67,000 actual miles '03 chevy 1500 HD crew cab 4x4 standard box, 6.0L

04-06-2008, 08:02 AM	#2
lurch115 Registered User Join Date: Oct 2006 Location: iowa Posts: 722	Re: Ring and Pinion question anyone?? __________________ "Horsepower is how fast you hit the wall, torque is how far you carry the wall with you." '84 chevy half ton short box 2wd, 67,000 actual miles '03 chevy 1500 HD crew cab 4x4 standard box, 6.0L

04-06-2008, 02:20 PM	#3
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: Ring and Pinion question Lurch. On the top of the right hand axel tube there is a series of numbers and letters. Record them and go to your local Chevy store and they can tell you what it wqas equiped with when it was built. Gears may have been changed, if they were the ID info won't mean anything, so be ware. You can check the ratio without counting teeth but you'll still have to pull the cover. Look on the edge of the ring gear for a series of numbers. Your looking for 4 numbers that look like this "15:41". 15 is the # of teeth on the pinion & 41 is the # of teeth on the ring. Devide 41 by 15 and you got it. It's the only way to be absolutely sure of whats in there, jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.

04-08-2008, 05:39 AM	#4
lurch115 Registered User Join Date: Oct 2006 Location: iowa Posts: 722	Re: Ring and Pinion question you mean a series of numbers like 1235401 16411283?? oh, and the truck is original yet minus a few typical maintaince things like plugs, wires, cap and rotor, and the battery....so i am gonna guess that if i go for that number on the axle tube that it will work for me __________________ "Horsepower is how fast you hit the wall, torque is how far you carry the wall with you." '84 chevy half ton short box 2wd, 67,000 actual miles '03 chevy 1500 HD crew cab 4x4 standard box, 6.0L Last edited by lurch115; 04-08-2008 at 05:41 AM.

04-08-2008, 03:08 PM	#5
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: Ring and Pinion question Lurch: Number on axel tube will; be alphanumeric and is usually under 6" from the pumpkin on the right (passengers side) top of tube. It's going to be difficult to read, age, rust, ect. The numbers on the ring gear will be next to a 7 or 8 didget part number. They are ALWAYS a 4 didget number with a : inbetween the 2nd and third number, like this 15:41. If you have just numbers on the tube or the pumpkin unbolts (no rear cover) it might be a Chrysler or Ford rear. Kind of unlikely but one never knows what a PO did. Hope this helps, jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.



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