350turbo in place of a 700r-4-4x4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71'tahoe · 12-20-2006, 01:14 AM

Hey guys i just picked up a 87' 4x4 blazer w/a 350 tbi and a 700r-4/208.My question is can i swap a 2wd turbo 350 tranny in t it.The 700 is burn and i have a rebuilt turbo 350.I have the 2''(i'm guesing here as i dont have infront of me)aluminium spacer that i'm told came with some auto's.I will get the 700 rebuilt later on down the road.I would just like to get this blazer motive again.Thanks for any help.

trevor3240 · 12-20-2006, 04:33 AM

If you are trying to put a 2wd tranny into a 4x4 truck it wont work the tourbo 350 automatic tranny is to long to have that transfercase for the 4x4 behind it. The 4x4 trannys are shorter then the 2wd.

71'tahoe · 12-20-2006, 02:30 PM

Even if i remove the tail houseing and use the spacer it still wont work?Thanks trevor for the quick reply

arkracing · 12-20-2006, 02:42 PM

You can remove the tailshaft housing but it still won't work. I'm pretty sure that the 350 cases are the same. The problem is that the 4x4 main shaft is shorter so you would have to put all the guts from a 4x4 tranny into the 4x2 case.

Basically you have to have the tranny rebuilt.

71'tahoe · 12-20-2006, 02:58 PM

Thanks AKRAcing
I know the main shafts are differnt lenghts..the 4x4 stops at the end of the case and the 2wd splines are of course out past the case when the tail stock is removed,I just thought with the space i have(that is some kind of gm unit)i could get by with it.I know the drive shaft length my also be problem.So i guess i'll have to wait and rebuilt the 700 thanks for all the help

12-20-2006, 01:14 AM	#1
71'tahoe Registered User Join Date: Feb 2004 Location: lynchburg ohio Posts: 736	350turbo in place of a 700r-4-4x4 Hey guys i just picked up a 87' 4x4 blazer w/a 350 tbi and a 700r-4/208.My question is can i swap a 2wd turbo 350 tranny in t it.The 700 is burn and i have a rebuilt turbo 350.I have the 2''(i'm guesing here as i dont have infront of me)aluminium spacer that i'm told came with some auto's.I will get the 700 rebuilt later on down the road.I would just like to get this blazer motive again.Thanks for any help.

12-20-2006, 04:33 AM	#2
trevor3240 Registered User Join Date: Jan 2006 Location: Idaho Posts: 7	Re: 350turbo in place of a 700r-4-4x4 If you are trying to put a 2wd tranny into a 4x4 truck it wont work the tourbo 350 automatic tranny is to long to have that transfercase for the 4x4 behind it. The 4x4 trannys are shorter then the 2wd.

12-20-2006, 02:30 PM	#3
71'tahoe Registered User Join Date: Feb 2004 Location: lynchburg ohio Posts: 736	Re: 350turbo in place of a 700r-4-4x4 Even if i remove the tail houseing and use the spacer it still wont work?Thanks trevor for the quick reply

12-20-2006, 02:42 PM	#4
arkracing Weekend Warrior Join Date: Oct 2004 Location: CT Posts: 1,787	Re: 350turbo in place of a 700r-4-4x4 You can remove the tailshaft housing but it still won't work. I'm pretty sure that the 350 cases are the same. The problem is that the 4x4 main shaft is shorter so you would have to put all the guts from a 4x4 tranny into the 4x2 case. Basically you have to have the tranny rebuilt. __________________ -'07 GMC Sierra K2500HD -'66 C10 Suburban -'68/'71 K20 Service Bed Project -'69 Chevy C30 Mason Dump -'33Ford P/U 396ChevyPowered Last edited by arkracing; 12-20-2006 at 02:43 PM.

12-20-2006, 02:58 PM	#5
71'tahoe Registered User Join Date: Feb 2004 Location: lynchburg ohio Posts: 736	Re: 350turbo in place of a 700r-4-4x4 Thanks AKRAcing I know the main shafts are differnt lenghts..the 4x4 stops at the end of the case and the 2wd splines are of course out past the case when the tail stock is removed,I just thought with the space i have(that is some kind of gm unit)i could get by with it.I know the drive shaft length my also be problem.So i guess i'll have to wait and rebuilt the 700 thanks for all the help



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