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#1 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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3.90 gears for Eaton H0 axles
I am not getting paid for this, but whenever the discussion about the Eaton comes up, the 3.90 gearsets are mentioned, but usually "they've been discontinued." well, I think they are still being made....
http://www.oldchevytrucks.biz/catalog3/0044.html part #HP208 (i think, its towards the top of the page) pricy at $350, but they are brand new. so I guess this is just an FYI for anyone who thought these aren't made anymore.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#2 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: 3.90 gears for Eaton H0 axles
Good to see the price coming down, and that they are available again. They were around $600 a few years ago. With that price drop, I would assume they're now being cut overseas.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#3 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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Re: 3.90 gears for Eaton H0 axles
I was sure Randys Ring and Pinion had them avaible also.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#4 |
1968 C20 Vortec Beast
Join Date: Jun 2005
Location: STILLWATER,OKLAHOMA
Posts: 483
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Re: 3.90 gears for Eaton H0 axles
It seems that a lot of people are wanting to go with more of a highway gear in the Eatons. I have also heard some people say that 3.90 is as high as they come. Well, I did find a set in a 70 C20 and they happened to be 3.73 and I looked in my GM catalog and they listed a 3.56 to even be available in some of the old Eatons. This may or may not be some helpful info for all of us junkyard rats willing to search around and get some better MPG out of our old pigs.
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Ugly or not it still kicks a**! |
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#5 | |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Re: 3.90 gears for Eaton H0 axles
Quote:
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#6 |
Jostrans68
Join Date: Mar 2001
Location: Bloomington indiana
Posts: 1,182
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Re: 3.90 gears for Eaton H0 axles
i have 4.10 in mine and just got a 3.54 dana 60 coil to put under it if i dont sell it
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![]() former 67-72 now with a 96 silverado |
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#7 |
Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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Re: 3.90 gears for Eaton H0 axles
3.73 would interest me, are you going to use them stueber68?
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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#8 |
Senior Member
![]() Join Date: Sep 2005
Location: NE
Posts: 363
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Re: 3.90 gears for Eaton H0 axles
I just saw on another board where a guy says he has 2 3rd's with 3.55's.I have never seen one and I've looked at dozens.I have seen a few 4.10, lots of 4.56's,and some 5.14's but never a 3.55'. Was there ever a 4.88'? Most say there wasn't but I know a guy that claims to have some.
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01 2500 Duramax,6spd,4x4,Not stock. Estimated 550rwhp/1100rwfp on fuel only. 03 3500 Duramax,6spd,4x4,Pac-Brake,not stock Estimated 500rwhp/1000rwfp fuel only 67 K10 in many pieces Little Brothers truck 67 K20 Cummins 12V/NV4500/205, D60/Eaton w/ Detroit,37" Xterrains,crossover steering, Future plans,Twins and lots of fuel. |
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#9 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Re: 3.90 gears for Eaton H0 axles
there's an international harvester axle that looks alot like the Eatons, called the RA-15 or something, that has 4.88 gears. maybe its that? they are pretty similar overall.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#10 |
Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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Re: 3.90 gears for Eaton H0 axles
I'm keeping the 4.10 rear in my truck as long as it keeps working, it doesn't do too bad on the highway with 33's.
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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 |
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#11 |
Junk/Daily Driver Club
![]() Join Date: Feb 2004
Location: Manheim, PA 17545
Posts: 253
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Re: 3.90 gears for Eaton H0 axles
3.90 is the best you can get for HO-72. 3.73 and 3.54 were Dana 60 gears.
Later Willis
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Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. ![]() There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened! |
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