Stock gear ratio for Eaton HO52 in 72 K20? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**DeadheadNM** · 10-11-2011, 11:14 PM

Anyone know what ratio is stock for an Eaton HO52 in a 72 K20?

**special-K** · 10-12-2011, 07:13 AM

Automatic or manual? I believe the automatics had 4.10 and manuals had 4.57 for the standard ratios.

**DeadheadNM** · 10-12-2011, 08:27 AM

Thank you. It's automatic I'm after. Just wanted to match what GM was supposed to install with what I have. Now I'll have to crawl under and find out.

10-11-2011, 11:14 PM	#1
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,290	Stock gear ratio for Eaton HO52 in 72 K20? Anyone know what ratio is stock for an Eaton HO52 in a 72 K20? __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

10-12-2011, 07:13 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: Stock gear ratio for Eaton HO52 in 72 K20? Automatic or manual? I believe the automatics had 4.10 and manuals had 4.57 for the standard ratios. __________________ "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 ~

10-12-2011, 08:27 AM	#3
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,290	Re: Stock gear ratio for Eaton HO52 in 72 K20? Thank you. It's automatic I'm after. Just wanted to match what GM was supposed to install with what I have. Now I'll have to crawl under and find out. __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland



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