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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: 78GMCK15 on November 25, 2002, 07:59:00 am

Title: Can I do this?
Post by: 78GMCK15 on November 25, 2002, 07:59:00 am

A friend is parting an '85 Blazer.  It's got a 6.2 diesel and 700R4/208.  I want the trans/t-case to replace the 350/203 combo in my truck.  Does the 6.2 have a specific bell-housing or is it the same as a SBC?  I don't want to go through the hassel of yanking all of this crap out, outside in the cold, if it's not gonna fit.

Thanks for the help!

Roy K.

Title: Re: Can I do this?
Post by: phaon1 on November 25, 2002, 11:00:00 am

As far as I'm aware, there were never any variations on the 700R4 (except for an input shaft change in 1982).  You may have some mounting issues, but the tranny should bolt to your engine just fine.  A quick measure of the distance between bell housing bolts couldn't hurt, though.

Chris

1981 GMC K10 – 75K miles on original parts (what few are left)
Exterior Mods –
- Royal Blue chameleon paint
- 15X11 Craiger chrome wheels
Interior Mods –
- B&M Light Truck Mega Shifter
- Grant steering wheel
- 6 Auto Meter Ultra Light gauges in dash, 2 on a-pillar
- Keyless entry
- Billet dash and door trim
- Solid headboard with four built in speakers
- Sony Mobil ES CD Deck, MTX truck boxes, Jensen AMP
Drivetrain Mods –
- GM Racing ZZ4 Engine with H.O.T. Cam kit, 150 amp alternator
- Hooker SS headers, 2 1/2" stainless exhaust, Dr. Gas x-pipe crossover, Flowmaster two chamber mufflers
- K&N X-Stream lid and 14" air cleaner.
- Coan 3000RPM custom built torque converter
- Built-up 700R4 transmission
- Yukon 4.11 gears with titanium pins in stock 10 bolt front and 12 bolt rear.
- Eaton heavy duty locker.

Title: can I do this
Post by: sandman on November 28, 2002, 03:41:00 pm

i looked at doing something similar but was told the 700 behind the diesiel has a olds or pontiac bolt pattern on the bell housing, wether or not my sources were right i don't know but I would definetly neasure the bolts to see

Title: Re: can I do this
Post by: 79GMC4x4 on December 03, 2002, 07:29:00 pm

Even on the 6.2?  Or are you thinking of the 350 diesel of the late 70's?

'79 GMC shortbed 454 th400 14 bolt FF NP205 Dana 60

Title: Re: Can I do this?
Post by: 73K20 on December 05, 2002, 07:59:00 pm

The 6.2 diesel has as SBC bell housing bolt pattern.

1973 K20 - 350/350/205

Title: Re: Can I do this?
Post by: Kevin108 on December 05, 2002, 09:01:00 pm

Quote:

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As far as I'm aware, there were never any variations on the 700R4

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But there is a difference between a 2WD and 4WD 700R4.

87 Silverado 4x4 Longbed Pickup
My Mods | Truck Pics | Kevin108@PavementSucks.com
Maker of 43 point turns!

Edited by: Kevin108 at: 12/24/02 11:49:39 pm

Title: Re: Can I do this?
Post by: 78GMCK15 on December 19, 2002, 10:15:00 pm

Edited by: 78GMCK15 at: 12/24/02 4:00:03 pm

Title: Re: Can I do this?
Post by: 79GMC4x4 on December 20, 2002, 06:38:00 pm

What did I miss?  78GMC, who pissed in your POST toasties?  Nothing above appears to be offensive toward you.  

'79 GMC shortbed 454 th400 14 bolt FF NP205 Dana 60