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02-03-2016, 10:44 PM
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#1 |
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Registered User
Join Date: Mar 2006
Location: Apple Creek, Ohio
Posts: 17
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Turbo 350 to 700r4
I'm sure it has been ask on here a few thousand times, but I want to change the Turbo 350 in my 70 Suburban to a 700r4. A friend of mine says that I simple need to move the engine forward and use a different mounting location and I can move the trans mount, and it will save me from having to cut the driveshaft... Has anyone done or heard of that?
Thanks in advance for any help. |
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02-03-2016, 10:50 PM
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#2 |
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the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Turbo 350 to 700r4
I guess you could do that. Seems like the backwards way of doing things.
I know that I would make the driveshaft fit the truck not the other way around. Your shaft could probably use new joints and a balance anyways. Fwiw I've had 3 shafts in my truck
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67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
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02-03-2016, 10:52 PM
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#3 |
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Registered User
Join Date: Dec 2012
Location: Heart of Tennessee
Posts: 1,120
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Re: Turbo 350 to 700r4
Driveshafts cut is under a hundred bucks with new u joints. Way easier.
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02-03-2016, 10:58 PM
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#4 |
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Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,446
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Re: Turbo 350 to 700r4
Yes tit can be done that way I did my SWB that way put new u-joints in and smooooooothh. You need to drill a coupla holes for the cossmember when you move it back easy-peasey . You will need a TV cable the life line of the 700 and the correct bracketry . Do a search it has been covered 100 times
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
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02-03-2016, 11:41 PM
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#5 |
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Registered User
Join Date: Oct 2013
Location: Massachusetts
Posts: 777
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Re: Turbo 350 to 700r4
Your friend must like to do things the more difficult way
 Much easier to just redrill tranny mount holes then worry about room for your cooling system and make more weight over your front end, which would actually result in handling issues. Moving an engine forward in a chassis, is against every principle of improved drivability for a vehicle, which is even worse in a pickup than a car
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______________________ www.northeastrodrun.com |
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02-04-2016, 12:06 AM
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#6 |
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Knuckle Buster, Instructor
 
Join Date: May 2010
Location: Pantego, NC
Posts: 562
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Re: Turbo 350 to 700r4
It depends on if you are talking about a 2wd or 4wd. It's its 4wd, moving the engine forward saves from having a new longer front shaft made. It also only moves the engine to the 2wd position.
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Current classic fleet: 72 K5 Blazer CST, unrestored factory Orange paint...mostly 69 C10 factory SWB, 454, TH400, Saddle tan, Rust-o-ration 53 Studebaker M35 w/331 Reo gas I-6, Air Force Strata Blue |
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02-04-2016, 01:39 AM
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#7 | |
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Registered User
Join Date: Aug 2012
Location: Midland, TX
Posts: 1,267
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Re: Turbo 350 to 700r4
 Quote:
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1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i |
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02-04-2016, 08:26 AM
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#8 |
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Registered User
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: Turbo 350 to 700r4
I would not move the engine , check out a 2004r , it will go right in , if you have a tall rear gear and want a 700r4 , then moving the transmission crossmember back and cutting the driveshaft is a better choice
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02-04-2016, 09:07 AM
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#9 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Turbo 350 to 700r4
Moving the engine involves more than drilling a few holes. The exhaust length will change, the radiator hoses, fan and pulley clearance change plus, on a 2WD, I would think there are oil pan clearance issues.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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02-04-2016, 09:57 AM
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#10 |
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Registered User
Join Date: Dec 2014
Location: Loveland, CO
Posts: 179
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Re: Turbo 350 to 700r4
Wootown,
2wd or 4wd? I started this exact swap last year on my BB 4x4 and totally agree with everything said above. Never had to move the engine, just drill the new hole for trans crossmember and have the DS shortened and balanced. Much less hassle and time on the garage floor in my case. Any questions or if you need some pics, PM me and I'll get some info your way. Hope this helps. Roger
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1971 K10 short bed step side, 5.3/th350/205, 3.73 gears |
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02-04-2016, 12:09 PM
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#11 |
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Registered User
Join Date: Mar 2014
Location: Simi, CA
Posts: 495
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Re: Turbo 350 to 700r4
Not only do you need a TV cable setup but you will also need to install some sort of control for the torque convertor lock up. There are a few different options, Bowtie Overdrives and B&M both offer solutions. Like kaycee stated, a search will provide you all the info you could ever need.
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