eaton gears, rehashed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1969 GMC · 11-26-2004, 12:09 AM

howdy all, I recently stumbled upon an interesting bit of information. According to an individual on pirate4x4, the 1963 chevrolet light truck TSM states that there is a 5.83 gear ratio available for the Eaton H072 axle. Can anyone confirm or deny this?

Longhorn Man · 11-26-2004, 12:50 AM

I have no documentation, but I wouldn't be suprised.

jostrans68 · 11-26-2004, 01:19 AM

ihave been told there were 6.14 also pull the house gears

68CST327 · 11-26-2004, 01:23 AM

Holy cow! I thought 5.13 (or something thereabouts) was the lowest you could get! I could not imagine driving something with gears that low. My 4.56 gears already feel pretty dang low as it is.

Robert1970C20rstbukt · 11-26-2004, 01:27 AM

Why the he!! would anyone want that low of a gear, I always thought 4:11's or even 4:57's were low enough.

1969 GMC · 11-26-2004, 01:40 AM

If I could find a set of 5.83's, I would be all over them like s**t on toilet paper.
But I will probably just stick with my 5.14's.

68CST327 · 11-26-2004, 02:11 AM

I don't know if these fit in the HO72 units, but this page lists Eaton diffs in 6.14, 6.50... 7.17 and... 7.60 sizes!! HOLY CRAP!!

http://stores.partseek.com/aatruckpa...ID=161&Level=2

Robert1970C20rstbukt · 11-26-2004, 02:29 AM

DAM!!!!!!! With 7.60's, 35" tires, and a tranny going 1:1, the engine would be turning about 5000RPM's at 70MPH.

1969 GMC · 11-26-2004, 02:59 AM

Quote:

Originally Posted by 68CST327

I don't know if these fit in the HO72 units, but this page lists Eaton diffs in 6.14, 6.50... 7.17 and... 7.60 sizes!! HOLY CRAP!!

http://stores.partseek.com/aatruckpa...ID=161&Level=2

thanks for the help but that is for larger Eaton axles used under bigger trucks.

I do know that you can get as low as 7.17 gears for Dana 60 and 70 axles. pretty crazy stuff.

1969 GMC · 11-26-2004, 07:19 PM

ttt
anyone?

Longhorn Man · 11-26-2004, 08:06 PM

Remember the real deep gears were normally paired with real tall tires. The 20 inch split rim tall by skinney deals, so that cur the revs down considerally.

Robert1970C20rstbukt · 11-26-2004, 10:17 PM

Yeah Longhorn Man you gotta point there. The tires are around 36 to 40 inches tall for the c/40 and up trucks.

1969 GMC · 11-27-2004, 04:17 AM

cough...cough...39.5 x 17 TSLs....

1969 GMC · 11-29-2004, 01:23 AM

ttt

11-26-2004, 12:09 AM	#1
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	eaton gears, rehashed howdy all, I recently stumbled upon an interesting bit of information. According to an individual on pirate4x4, the 1963 chevrolet light truck TSM states that there is a 5.83 gear ratio available for the Eaton H072 axle. Can anyone confirm or deny this? __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

11-26-2004, 01:19 AM	#3
jostrans68 Jostrans68 Join Date: Mar 2001 Location: Bloomington indiana Posts: 1,182	ihave been told there were 6.14 also pull the house gears __________________ [CGTW Member former 67-72 now with a 96 silverado

11-26-2004, 01:27 AM	#5
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Why the he!! would anyone want that low of a gear, I always thought 4:11's or even 4:57's were low enough. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

11-26-2004, 01:40 AM	#6
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	If I could find a set of 5.83's, I would be all over them like s**t on toilet paper. But I will probably just stick with my 5.14's. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

11-26-2004, 02:29 AM	#8
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	DAM!!!!!!! With 7.60's, 35" tires, and a tranny going 1:1, the engine would be turning about 5000RPM's at 70MPH. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

11-26-2004, 12:50 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	I have no documentation, but I wouldn't be suprised.

11-26-2004, 01:23 AM	#4
68CST327 Registered User Join Date: Aug 2002 Location: USA Posts: 443	Holy cow! I thought 5.13 (or something thereabouts) was the lowest you could get! I could not imagine driving something with gears that low. My 4.56 gears already feel pretty dang low as it is.

11-26-2004, 02:11 AM	#7
68CST327 Registered User Join Date: Aug 2002 Location: USA Posts: 443	I don't know if these fit in the HO72 units, but this page lists Eaton diffs in 6.14, 6.50... 7.17 and... 7.60 sizes!! HOLY CRAP!! http://stores.partseek.com/aatruckpa...ID=161&Level=2

11-26-2004, 07:19 PM	#10
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	ttt anyone? __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

11-26-2004, 08:06 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Remember the real deep gears were normally paired with real tall tires. The 20 inch split rim tall by skinney deals, so that cur the revs down considerally.

11-26-2004, 10:17 PM	#12
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Yeah Longhorn Man you gotta point there. The tires are around 36 to 40 inches tall for the c/40 and up trucks. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

11-27-2004, 04:17 AM	#13
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	cough...cough...39.5 x 17 TSLs.... __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

11-29-2004, 01:23 AM	#14
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	ttt __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650



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