2 speed Rear? A joke or are they for real? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TP from Cntl PA · 12-13-2003, 08:35 PM

For a good couple of years I have been hearing from guys that they had a 2 speed rear available for one tons back in the 60's/70's...................Is this pure B/S or did they actually make them?

Maybe I just want a "Red Button" in my one ton on the shifter like its big IH buddy in corn crib

cableguy0 · 12-13-2003, 08:47 PM

they are real and do exist some dodge cars even had them. i know the ones in the dodges were made by eaton that how they were going 200mph at daytona in the late 50's and early 60's. the low gear was like a 5.20 ratio and the high gear was like a 3.23 or so dont know for sure but i would love to find one myself

72 Blazerman · 12-13-2003, 08:53 PM

yeah they are real, my grand father had a bunch of big Ford trucks with them, back in the late 60's early 70's.

Doug

jcueckert13 · 12-13-2003, 09:24 PM

i wonder what gearing the dodge rears had because a 2 speed rear would go good on my 76 dodge. my dad has one in his 51 chevy 3/4 ton milk truck but it is wat to big for my gmc

cdowns · 12-13-2003, 09:48 PM

200 MPH at daytona in the late 50's i don't think so !!! considering the fact DIS didn't open till feb59 they never hit 200 till the 70's with the hemis

TP from Cntl PA · 12-13-2003, 10:23 PM

Guys, I know they exist............I have a 2 spd rear in our Big IH truck(5+2)............But did Chevy ever put them in any '67-'72 trucks?

That is the question...........

dinnut · 12-13-2003, 10:28 PM

im doubting that they were put in 67-72's

**old Rusty C10** · 12-13-2003, 10:37 PM

if they did im sure it was int he trucks above 30 series like the commercial vehicles

cdowns · 12-13-2003, 10:39 PM

the eaton 2speed 18,500lb was available in 67 C60 definately and possibaly later years also

lost wages · 12-13-2003, 11:03 PM

i dont think they were in the light trucks but i have a 69 c50 with a split rear end. Not sure of the ratios other than really freaking low.

1969 GMC · 12-14-2003, 06:16 AM

Quote:

Originally posted by cdowns
they never hit 200 till the 70's with the hemis

3 words...1960 Chrysler 300F

413 tunnel ram big block...most had automatics...fast ass cars.

back to the original ?, I don't believe that they ever came in 67-72 light trucks, I can say with certainty I have never seen one and have never heard of one. That doesn't mean that they didn't make a small handful, though.

GMC Jim · 12-14-2003, 09:06 AM

I had a '46 Mercury and had installed a 2 speed differential.....The manufacturer was 'Columbia'

cdowns · 12-14-2003, 01:41 PM

1960 pole speed daytone 177.2mph chrysler 68drivers started the race most ever 1987 bill elliot 210 fastest

12-13-2003, 08:35 PM	#1
TP from Cntl PA Registered User Join Date: Apr 2003 Location: Central PA....In the Berg of Nisbet Posts: 790	2 speed Rear? A joke or are they for real? For a good couple of years I have been hearing from guys that they had a 2 speed rear available for one tons back in the 60's/70's...................Is this pure B/S or did they actually make them? Maybe I just want a "Red Button" in my one ton on the shifter like its big IH buddy in corn crib __________________ '72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!

12-13-2003, 08:47 PM	#2
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	they are real and do exist some dodge cars even had them. i know the ones in the dodges were made by eaton that how they were going 200mph at daytona in the late 50's and early 60's. the low gear was like a 5.20 ratio and the high gear was like a 3.23 or so dont know for sure but i would love to find one myself __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

12-13-2003, 08:53 PM	#3
72 Blazerman Chevelle Nutt Join Date: Nov 2002 Location: Fredericksburg, Va. Posts: 204	yeah they are real, my grand father had a bunch of big Ford trucks with them, back in the late 60's early 70's. Doug __________________ 71 CST Blazer 4X4, 350, on da tree 81 Blazer 2wd 350 350 99 F*** Ranger, I know, I know but it's cheap transportation 83 Mustang GT 5.0 4 speed loaded "got cubic inch?"

12-13-2003, 09:24 PM	#4
jcueckert13 Registered User Join Date: Apr 2003 Location: Edgewood New Mexico Posts: 2,088	i wonder what gearing the dodge rears had because a 2 speed rear would go good on my 76 dodge. my dad has one in his 51 chevy 3/4 ton milk truck but it is wat to big for my gmc __________________ 1990 subaru legcy (daily driver) 1987 Toyota 4runner (weekend toy) 1968 C30 flatbed dually 1970 C10 longbed stepside (in pieces) 1976 Dodge Dart 1963 Dodge Dart

12-13-2003, 09:48 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	200 MPH at daytona in the late 50's i don't think so !!! considering the fact DIS didn't open till feb59 they never hit 200 till the 70's with the hemis __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

12-13-2003, 10:23 PM	#6
TP from Cntl PA Registered User Join Date: Apr 2003 Location: Central PA....In the Berg of Nisbet Posts: 790	Guys, I know they exist............I have a 2 spd rear in our Big IH truck(5+2)............But did Chevy ever put them in any '67-'72 trucks? That is the question........... __________________ '72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!

12-13-2003, 10:28 PM	#7
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	im doubting that they were put in 67-72's __________________ 70 longbed 496/th400/Ford 9"

12-13-2003, 10:37 PM	#8
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,326	if they did im sure it was int he trucks above 30 series like the commercial vehicles __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

12-13-2003, 10:39 PM	#9
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	the eaton 2speed 18,500lb was available in 67 C60 definately and possibaly later years also __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

12-13-2003, 11:03 PM	#10
lost wages Registered User Join Date: Apr 2001 Location: jefferson city, mo Posts: 1,364	i dont think they were in the light trucks but i have a 69 c50 with a split rear end. Not sure of the ratios other than really freaking low.

12-14-2003, 09:06 AM	#12
GMC Jim Senior Member Join Date: Dec 2002 Location: Portland, Oregon Posts: 901	I had a '46 Mercury and had installed a 2 speed differential.....The manufacturer was 'Columbia' __________________ '71 GMC;fleetside;PB/PS/AC/CC/402 Eng./Custom Paint/110,000act miles/3 fuel tanks(52gal).

12-14-2003, 01:41 PM	#13
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	1960 pole speed daytone 177.2mph chrysler 68drivers started the race most ever 1987 bill elliot 210 fastest __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

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