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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Hotrod Steve on September 28, 2009, 09:51:37 pm

Title: 700r4 crossmember
Post by: Hotrod Steve on September 28, 2009, 09:51:37 pm

Hello
I'm in the process of putting together a 700r4 for my 83C-10.
Replacing a 4 speed manual SM465 granny low.
Will the manual crossmember work with the 700r4?
Do I have to get the correct auto crossmember?

Title: Re: 700r4 crossmember
Post by: aussie on September 29, 2009, 07:23:08 am

 i think there the same trans mount i had a turbo 350 trans it was the same crossmember i noticed some crossmembers are not straight like mine they have a reccessed area seams like its for a cat

Title: Re: 700r4 crossmember
Post by: 87OldYeller on September 29, 2009, 10:00:53 am

OK the 700r4 is the overdrive tyranny right? is that electric o/d or manual. Cause my though was a 700r4 once a time ago. But was told it would not shift in to o/d with out the wiring.

Title: Re: 700r4 crossmember
Post by: Captkaos on September 29, 2009, 03:24:39 pm

The only electronic function of the 700R4 is the converter lockup.  otherwise it is a 4 speed with 4 being overdrive.  Without the electronic connection the converter won't lockup.

The crossmember should work, its position and the trans mount will likely be different.

Title: Re: 700r4 crossmember
Post by: aussie on September 30, 2009, 06:30:33 pm

bowtie overdrive sell a lockup convrter kit about $100 last time i brought one esay to install

Title: Re: 700r4 crossmember
Post by: Captkaos on October 01, 2009, 02:58:26 pm

You can build one yourself also:
http://www.73-87.com/7387garage/drivetrain/lockup.htm