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#1 |
Registered User
![]() Join Date: Oct 2009
Location: SoCal
Posts: 815
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350 vs 700r4 length
I tried the search before I asked, but couldnt find an answer. My 74 shortbed originally came with a 350/350 combo. They are both long gone now. I have a 400 to install but now might be trading it for a 700r4. Im guessing my 350 had a 9" tail shaft but not sure. Am I going to need to lengthen or shorten my drive shaft?? Is the column shift brackets going to adapt or do I need them from an 80s truck?? Thanks for any info, Matt.
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#2 |
yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
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Re: 350 vs 700r4 length
my 73 C10 came with a th350, I swapped a 700 in, the drivesahft did not need to be shortened at all.
Can't help on the linkige part, I am running a floor shifter.
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#3 |
Registered User
Join Date: Oct 2011
Location: Emory TX
Posts: 900
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Re: 350 vs 700r4 length
Drive shaft and the linkage will both work.
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___________________ 78 ccsb dually 5.3 4l60e http://67-72chevytrucks.com/vboard/s...d.php?t=491551 |
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#4 |
Registered User
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,680
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Re: 350 vs 700r4 length
You do have to move the cross member..
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#5 |
Registered User
![]() Join Date: Oct 2009
Location: SoCal
Posts: 815
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Re: 350 vs 700r4 length
Well if my stock driveshaft will work that will save me some coin. Thanks for the info.
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#6 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: 350 vs 700r4 length
My '74 had the long tailshaft, and the 700R4 went right in. I did have to move the crossmember, like Rich mentioned. Not an issue at all. Driveshaft and linkage works like a charm.
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1974 Jimmy- 5.3/4L80e/NP241 |
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#7 |
Registered User
Join Date: Oct 2010
Location: Largo Florida
Posts: 632
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Re: 350 vs 700r4 length
If your truck had a long shaft TH350 then you don't need to do anything, the driveshaft slip right in. How do I know, my 1974 was an original TH350 (they originally came with long shafts) and I put in a 700R4 and used the original drivesaft.
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Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle." |
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#8 |
Registered User
![]() Join Date: Oct 2009
Location: SoCal
Posts: 815
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Re: 350 vs 700r4 length
I dont remember if my 350 was a long tail or not. Does one of you have a measurement of the driveshaft?
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#9 |
Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: 350 vs 700r4 length
A "short tail" TH350's extention housing is roughly 6" long.
A "long tail" TH350's extention housing is roughly 9" long. |
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#10 |
Registered User
![]() Join Date: Oct 2009
Location: SoCal
Posts: 815
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Re: 350 vs 700r4 length
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#11 |
Registered User
![]() Join Date: Oct 2011
Location: Wildomar, CA
Posts: 466
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Re: 350 vs 700r4 length
Linkage should work just fine. Just need to change the indicator in the dash. Easy swap.
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#12 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: 350 vs 700r4 length
Transmission mounting and housing sizes.
http://www.tciauto.com/tc/trans-dim |
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#13 |
Registered User
Join Date: Oct 2010
Location: Largo Florida
Posts: 632
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Re: 350 vs 700r4 length
If you can wait a bit I can slide under my truck and measure the driveshaft on my truck.
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Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle." |
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#14 | |
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Re: 350 vs 700r4 length
Quote:
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#15 |
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Re: 350 vs 700r4 length
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#16 |
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Re: 350 vs 700r4 length
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#17 | |
Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: 350 vs 700r4 length
Quote:
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#18 |
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Location: Wildomar, CA
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Re: 350 vs 700r4 length
![]() If that option doesn't pan out, LMC truck (cheapest) has them along with a few others. On Ebay: http://www.ebay.com/itm/GMC-C-K-R-V-...item53ec2202a7 Classic Industries: http://www.classicindustries.com/truck/parts/17140.html LMC: http://www.lmctruck.com/icatalog/cc/full.aspx?Page=136 (It says it is for later models than yours but that is only due to the availability of the 700, it will mount just fine with no mods) Or, Yes, Junkyard but if you are like me, you most likely will leave the junkyard with it and a host of other parts you found and an empty wallet.... ![]() |
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#19 |
Registered User
Join Date: Feb 2011
Location: Abilene Kansas
Posts: 18
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Re: 350 vs 700r4 length
i dropped a built 1966 327 ci engine with a 1997 4l60e in a 1986 c-10 that had a 305 ci and a th350 and all I had to do was move the cross member and the shifter worked fine also
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#20 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: 350 vs 700r4 length
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