Overdrive Transmission - The 1947 - Present Chevrolet & GMC Truck Message Board Network

treefrog · 08-18-2002, 11:35 AM

I'm running a 70 411 rear, and have 3 choices. Change the rear, go to overdrive, or get a part-time job to pay the gas. What tranny will swap with the least amount of effort? TF

slam33 · 08-18-2002, 11:40 AM

what tranny is in it now ?

treefrog · 08-18-2002, 11:53 AM

It has the old hydromatic 3 speed.

72 super 350 · 08-18-2002, 12:17 PM

I also have a '72 Heavy Chevy and i have the 3 speed hydro with the 4.11's. I get about 10 to 11 with my 350. I do a LOT of pulling with mine, but i still need to get a little better gas millage. 15 would be great!

thanks

**Tim Christian** · 08-18-2002, 02:15 PM

Treefrog does your trans have a 6in or 9in tailshaft?

treefrog · 08-18-2002, 04:52 PM

The tranny has a 6" tailpiece. That's measured from oil leak to oil leak. TF

**Tim Christian** · 08-18-2002, 05:27 PM

In order to change to a over drive you would need to modify the drive shaft. I will do some measuring and get back with you.

Longhorn Man · 08-18-2002, 08:43 PM

Quote:

Originally posted by treefrog
That's measured from oil leak to oil leak. TF

You been layin under my truck again? lol

*big71* · 08-18-2002, 09:01 PM

700r4 is a pice of crap in my opeion one just left me on side of road today

08-18-2002, 11:35 AM	#1
treefrog Registered User Join Date: May 2002 Location: Knoxville, TN USA Posts: 189	Overdrive Transmission I'm running a 70 411 rear, and have 3 choices. Change the rear, go to overdrive, or get a part-time job to pay the gas. What tranny will swap with the least amount of effort? TF

08-18-2002, 11:40 AM	#2
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	what tranny is in it now ? __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

08-18-2002, 12:17 PM	#4
72 super 350 Registered User Join Date: Jun 2001 Location: Pantego, NC, USA Posts: 47	I'm in the same position I also have a '72 Heavy Chevy and i have the 3 speed hydro with the 4.11's. I get about 10 to 11 with my 350. I do a LOT of pulling with mine, but i still need to get a little better gas millage. 15 would be great! thanks __________________ 78 Chrysler Cordoba Race Car 360 CI. B-Bomber 96 Jeep Grand Cherokee 72 Super with 350. In process of rebuilding. any tips welcomed

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

08-18-2002, 11:53 AM	#3
treefrog Registered User Join Date: May 2002 Location: Knoxville, TN USA Posts: 189	It has the old hydromatic 3 speed.

08-18-2002, 02:15 PM	#5
Tim Christian Senior Member Join Date: Dec 1999 Location: TN/VA Posts: 6,388	Treefrog does your trans have a 6in or 9in tailshaft?

08-18-2002, 04:52 PM	#6
treefrog Registered User Join Date: May 2002 Location: Knoxville, TN USA Posts: 189	The tranny has a 6" tailpiece. That's measured from oil leak to oil leak. TF

08-18-2002, 05:27 PM	#7
Tim Christian Senior Member Join Date: Dec 1999 Location: TN/VA Posts: 6,388	In order to change to a over drive you would need to modify the drive shaft. I will do some measuring and get back with you.

08-18-2002, 09:01 PM	#9
big71 Account Suspended Join Date: Nov 2001 Location: JONESVILL NC Posts: 1,303	700r4 is a pice of crap in my opeion one just left me on side of road today



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.