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05-17-2015, 11:19 PM
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#1 |
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Registered User
Join Date: Jul 2014
Location: Valley springs ca.
Posts: 69
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1972 C10 Trans swap
Just got the truck on the road after installing a doner engine(1985 350 with a Th350 trans ) it drives ok but it seems to sway and lean out in the corners soft suspension at 55 mph it feels and sounds like the truck needs to up shift question 1. How to ID my diff and its gear ratio . Question 2 are any of you guys running overdrive granny's like a 700r4. Question 3 what is a good combination of trans and diff for normal town and highway driving?
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05-18-2015, 08:55 AM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: 1972 C10 Trans swap
tranny has nothing to do with the ride quality you are complaining about// check your suspension shocks springs balljoints as well as sway bars can have all the effect on ride quality
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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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05-19-2015, 01:07 AM
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#3 |
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Registered User
Join Date: Jul 2014
Location: Missouri
Posts: 1,427
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Re: 1972 C10 Trans swap
You can pull off your diff plate and turn it until you see numbers on the ring. Post those numbers on here. Second, 700r4's are a popular swap, and a 350/700r4 with 3.73 gears would be a great combo. Sway bars would help control the body roll you're speaking of.
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Jack Personal Fleet: Family Fleet: 1955.5 Panel 1959 Apache 1968 ShortWide 1969 ShortStep |
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05-19-2015, 12:53 PM
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#4 |
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Registered User
 
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: 1972 C10 Trans swap
alot of times the gear ratio is writin on the inside glove box door , also a code is stamped on an axil tube that tells the ratio , it needs to be deciphered , many came with 3.73 gears , your engine will wind out at highway speeds with this gear or 4.11s . a 2004rtrans will fit in the same spot as your turb0 350 , with some modification , and has overdrive
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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05-19-2015, 02:01 PM
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#5 |
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Registered User
Join Date: Oct 2012
Location: Newhall CA
Posts: 1,195
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Re: 1972 C10 Trans swap
350/ 700r4 and 3.73 great combo. a lot of these truck didn't come with a sway bar, find one off a 1ton mid 70 early 80's truck at the junk yard. i got mine there 1 1/4 dia.
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69 SWB 780hp Hellcat powered, manual 6 speed, currie 9 |
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