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#1 |
Registered User
Join Date: Dec 2009
Location: Watsonville, California
Posts: 3
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700R4 Tranny for 1970 K10 4x4
I have a 1970 K10 4x4 that currently has a SBC 350 with a Turbo 350 tranny. I want to swap the Turbo 350 tranny for a 700R4 tranny. Has anyone done this swap before? I'm guessing that there must be a conversion kit with new brackets or tranny mounts. I'm going to mate the new tranny to a 383 stroker. If anyone has done the tranny swap I'd love to hear how you did it and any mods that are needed. Thanks!
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#2 | |
Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: 700R4 Tranny for 1970 K10 4x4
Quote:
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69 Chevy 4x4 383 Power ![]() |
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#3 |
I built it
Join Date: Sep 2008
Location: Bakersfield ca
Posts: 744
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Re: 700R4 Tranny for 1970 K10 4x4
i may be compleatly wrong (probly am
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'72 k10 lwb 454, th400, 205, d44ft, 12b rear, 4in skyjacker, 35x12.5-15 superswampers, 4.56, blazer tank. painless wiring harness '98 dodge 3500 12v 5sp 4x4. the truck that actually runs |
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#4 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: 700R4 Tranny for 1970 K10 4x4
Quote:
Because the transmission is almost two inches longer than the th350, you'll need to move your engine forward that distance or move the t-case back and do work on your driveshafts. It seems the consensus here is it is best to move the engine forward. This swap is on my list. I even have the core transmission on the floor in the shop waiting for the money to have it rebuilt and have that output shaft installed.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#5 | |
Registered User
Join Date: Oct 2000
Location: St. Johns, Arizona
Posts: 2,660
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Re: 700R4 Tranny for 1970 K10 4x4
Quote:
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my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans? |
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#6 |
Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: 700R4 Tranny for 1970 K10 4x4
That would depend on what T case he has I had to change mine when I went from the 205 to the 208. 205 is all steel and 208 is aluminum I also had to change the out put shaft in the T400 so if he gets a 700R4 that was not in a 4x4 he may have to change the output shaft. I'm not sure on any of this just saying what I went through.
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69 Chevy 4x4 383 Power ![]() |
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#7 |
Registered User
Join Date: Mar 2006
Location: Kansas
Posts: 300
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Re: 700R4 Tranny for 1970 K10 4x4
I did this swap and you cna use all of the stock stuff. I moved the engine further forward which helped the distance between the firewall and the dist and had to move the linkage for shifting forward a little. But besides that they are right you need the right output shaft for your transfer case but you can use all of the stock cross members and drive shafts.
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1969 GMC 3/4 Ton 4x4 2" Lift, A/C, PS, PB 383 Stroker, 700R4, 205, 4.10 GM Medium Bronze (Copper Poly) no new nick name yet. She is to pretty to be the Beater. http://67-72chevytrucks.com/vboard/s...d.php?t=241855 |
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#8 |
Registered User
Join Date: Jul 2009
Location: Daytona Beach, Fl
Posts: 7
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Re: 700R4 Tranny for 1970 K10 4x4
Did anyone doing this swap have any issues using the existing turbo 350 tv cable with the new 700r4? I put a 90 700r4 tranny in my 70 k5 blazer and the cable hookup just doesn't seem right I had to fight it all the way, jus curious if anyone else had any issues, for the original post I had to get a new output shaft for the transmission and move my mounting backets back about 1.5 inches and shorten the rear driveshaft
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#9 |
I built it
Join Date: Sep 2008
Location: Bakersfield ca
Posts: 744
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Re: 700R4 Tranny for 1970 K10 4x4
th350 has no tv setup. its all vac, the cable on it is only kickdown. wait for someone with 700r experience to chime in for some help setting it up
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'72 k10 lwb 454, th400, 205, d44ft, 12b rear, 4in skyjacker, 35x12.5-15 superswampers, 4.56, blazer tank. painless wiring harness '98 dodge 3500 12v 5sp 4x4. the truck that actually runs |
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#10 |
Registered User
Join Date: Apr 2011
Location: Tacoma, Washington
Posts: 236
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Re: 700R4 Tranny for 1970 K10 4x4
If you are running a Carter/Edelbrock carb make sure you get the little linkage geometry corrector bracket that bolts on to your carb. And adjust your TV cable right or you will burn the 700R4 up. Check out www.transmissioncenter.net
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Erik 1969 Chevy K20 6.0L/4L80E/NP205 1971 Chevy C30 Cheyenne Longhorn 454/TH400 1979 Chevy K30 dually currently in pieces |
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#11 |
Just like to part out trucks!!
Join Date: Nov 2001
Location: Meriden, Ks-North of Topeka 10 miles
Posts: 27,396
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Re: 700R4 Tranny for 1970 K10 4x4
I'm wanting to do this on my 67, subscribed
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67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure" |
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#12 |
Registered User
Join Date: Jul 2007
Location: Silverdale, WA
Posts: 263
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Re: 700R4 Tranny for 1970 K10 4x4
Bowties has all kinds of information on the tv set up that you will need. http://bowtieoverdrives.com/index.shtml
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#13 |
Registered User
Join Date: Jul 2009
Location: Daytona Beach, Fl
Posts: 7
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Re: 700R4 Tranny for 1970 K10 4x4
I just completed my swap...thanks for the info on the tv cable, my 700r4 came out of a 90 burb 2wd, I had to get a shorter output shaft as described, and I moved my tcase crossmember back about 1.5". I had to get a new front driveshaft made anyways due to the 6" lift I put on previously. I ordered a new tv cable and carb linkage adapter off ebay (roughly $50.00) Only hiccup o far is the dipstick outta the burb wouldn't fit in my 70 k5 so I stuck with the one that was in the truck and haveta guess when its full. (10qts so far so good) all in all wasn't a bad swap...Im into it about $800
Free tranny $0 Installation of shorter shaft $600 TV cable and linkage $50.00 12 qts synthetic tranny fluid $90.00 Saving gas mileage and wear tear on my motor:priceless |
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700r4, turbo 350, turbo 400 |
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