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#1 |
Registered User
![]() Join Date: Sep 2003
Location: Waterloo, IA
Posts: 1,147
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Question - engine mounts for 700R4 trans?
I'm going to be installing my 700R4 into the GMC next week and would like to move the engine forward rather than shorten the DS.
Looking for ideas/pics/suggestions of what others have done to relocate the engine mounts successfully. Thanks in advance, Paul
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'72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958 |
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#2 |
Senior Member
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
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Re: Question - engine mounts for 700R4 trans?
won't work!! The engine won't go forward enough. You'll have to cut the driveshaft 3", assuming that your 700 has the short tail housing.
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1997 GMC Sierra Ext 1965 Mustang |
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Question - engine mounts for 700R4 trans?
maybe you could lengthen the frame fenders and hood by 3inches to move the engine foreward , that would save you the trouble of shortening the driveshaft
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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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#4 |
Registered User
![]() Join Date: Sep 2003
Location: Waterloo, IA
Posts: 1,147
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Re: Question - engine mounts for 700R4 trans?
I've got a welder, torch, and steel plate - it's going to work somehow. I am just looking for others' ideas before I come up with my own.
I know there have been others that have done this........
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'72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958 |
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#5 |
Mike
Join Date: Jan 2003
Location: west chester pa
Posts: 2,474
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Re: Question - engine mounts for 700R4 trans?
If you are talking about that 4X4,the 700 is only 1 3/4" longer.More than enough room to move the engine forward.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires |
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#6 |
Registered User
![]() Join Date: Sep 2003
Location: Waterloo, IA
Posts: 1,147
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Re: Question - engine mounts for 700R4 trans?
Any stories of success?
I'm heading up Tuesday night and back on Memorial Day.
__________________
'72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958 |
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#7 |
Registered User
Join Date: Oct 2003
Location: Sunny, Florida, some might call it South Alabama
Posts: 834
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Re: Question - engine mounts for 700R4 trans?
I've just installed a 700 in my truck and I'm getting a drive shaft cut...
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Just sold my C10...sad day... Looking for a 1972 Blazer to hopefully fill the hole in my heart. |
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#8 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Question - engine mounts for 700R4 trans?
Paul72 -
I went to the gas station Saturday. $111.40 later I'm reconsidering my choice of th350 over the 700r4 when I switched from manual to auto. PLEASE keep this thread up to date with your progress. I still have the spreadsheet I used to help me decide th350 over 700r4. At that time gas was $1.60/gallon. I figured I'd have to pay $3.20/gallon to make it worth the extra dollars for the 700 rebuild, etc. Saturday it was $3.38/gallon. The general concensus on this subject is to move your engine forward and leave the drive shafts alone. There is enough room to do this because the factory V8 engine position is tight against the firewall. Again. Please update this thread with your progress.
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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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#9 |
Registered User
Join Date: Jan 2006
Location: Morro Bay C.A
Posts: 179
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Re: Question - engine mounts for 700R4 trans?
two wheel drive will be cutting it close... 4wd should work fine... i moved my mounts forward an inch or so but i wasnt using a stock driveshaft i pieced one together that was a bit shorter that the stock one i had.
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'69 C10 SWB 350 edelbrock int/carb .420 .442 cam 700r4 70 lwb c10 work truck 250 I6 with two inch lift springs and a two inch bodylift and 33/12.5s |
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#10 |
18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: Question - engine mounts for 700R4 trans?
IMO it seems like a lot less work to shorten the driveshaft??
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... ![]() |
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#11 |
Senior Member
![]() Join Date: Dec 1999
Location: Spring Valley, Ca.
Posts: 1,112
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Re: Question - engine mounts for 700R4 trans?
I'm with kelsfine69, I made that change into a 71 short 2WD. And everything went well and I have many troublefree miles on it since.
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Smitty '71 Short Fleetside Spring Valley, Ca. Last edited by Smitty; 05-21-2007 at 08:04 PM. Reason: spelling |
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#12 |
Registered User
![]() Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: Question - engine mounts for 700R4 trans?
I have to agree. granted it would be nice to gain a little room between the firewall and dizzy, but chopping the rear and lenthening the front drive shafts is alot less work. I've got $300 total into my custom shafts with new joints, CV, longer slip shafts and balanced, built from scratch. -steve
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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