Part buffs... Please help me ID these gears!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

redz 1970 K5 · 09-03-2004, 02:14 AM

So, after a more careful examination of my gears during a drain/fill, I suspect I do NOT have 4.56's as advertised when purchased, or possibly WORSE different ratio's front/rear. I was going off of SOTP and what the PO told me when purchased. The front in particular I am about 99% sure are 3.73:1 just based on one full revolution of the ring to under 4 turns of the driveshaft.

Anyways, here are the stampings on the ring gears... ANY HELP in tracking these to what they actually are would be MOI appreciated.

FRONT-

10 2 69 DANA 18575 A3D85 41:11

REAR-

3817778 11:41 GM11752

Thanks in advance for ANY help!!!

moodyholler · 09-03-2004, 07:08 AM

41:11 tells you its 41 teeth on ring and 11 on pinion. Divide and you get 3:73. Hope this helps, moodyholler

redz 1970 K5 · 09-03-2004, 11:45 AM

That does help, thanks!!! SON OF A B($()#...

How does someone advertise 4.56's, tell me a story on how HE installed them, and basically lie through his teeth the whole time?

Ah well, I guess I will take factory installed 3.73's over jimmy rigged 4.56's anyways.

09-03-2004, 02:14 AM	#1
redz 1970 K5 OBS guy Join Date: Jun 2004 Location: SoCal Posts: 1,060	Part buffs... Please help me ID these gears!!! So, after a more careful examination of my gears during a drain/fill, I suspect I do NOT have 4.56's as advertised when purchased, or possibly WORSE different ratio's front/rear. I was going off of SOTP and what the PO told me when purchased. The front in particular I am about 99% sure are 3.73:1 just based on one full revolution of the ring to under 4 turns of the driveshaft. Anyways, here are the stampings on the ring gears... ANY HELP in tracking these to what they actually are would be MOI appreciated. FRONT- 10 2 69 DANA 18575 A3D85 41:11 REAR- 3817778 11:41 GM11752 Thanks in advance for ANY help!!! __________________ 88 Suburban Goodies- Alpine, Auto Meter, BDS, Bilstein, B&M, BFG, Borgeson, Bushwhacker, Cowl hood, Flowmaster, Genuine Gear, Holley, Infinity, JVC, K&N, MB Wheels, MSD, Pioneer, Skyjacker, Sony, Thorley, Walker + more

09-03-2004, 07:08 AM	#2
moodyholler Registered User Join Date: Dec 2003 Location: Roanoke,Virginia Posts: 179	3:73's definitely 41:11 tells you its 41 teeth on ring and 11 on pinion. Divide and you get 3:73. Hope this helps, moodyholler __________________ 1998 WRANGLER I-6 auto 1972 LWB FLEETSIDE 1968 GMC SWB STEPSIDE 1994 C-1500 SWB 4.3 5 SPD

09-03-2004, 11:45 AM	#3
redz 1970 K5 OBS guy Join Date: Jun 2004 Location: SoCal Posts: 1,060	That does help, thanks!!! SON OF A B($()#... How does someone advertise 4.56's, tell me a story on how HE installed them, and basically lie through his teeth the whole time? Ah well, I guess I will take factory installed 3.73's over jimmy rigged 4.56's anyways. __________________ 88 Suburban Goodies- Alpine, Auto Meter, BDS, Bilstein, B&M, BFG, Borgeson, Bushwhacker, Cowl hood, Flowmaster, Genuine Gear, Holley, Infinity, JVC, K&N, MB Wheels, MSD, Pioneer, Skyjacker, Sony, Thorley, Walker + more

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