Posted By: 79410aspenrt
727 race rebuild question - 01/27/15 10:59 PM
I will be rebuilding my 727 in the near future. It's stock from 1979 and needs attention. I have a manual (forward pattern) valve body. I'm not going trans brake so what parts should I use for the rebuild? It's going behind a 650 hp small block.
Posted By: Steve1118
Re: 727 race rebuild question - 01/27/15 11:02 PM
In our Hemi Nostalgia SS we just go to NAPA, get a rebuild kit and use it. Torqueflites are good stuff, you'll be fine.
Posted By: WILD BILL
Re: 727 race rebuild question - 01/28/15 01:49 AM
If your VB does not have the LBA then I highly recommend getting a billet front drum.
Other than that, not much else special is needed.
Call John at CRT. He will get you hooked up right.
Posted By: carhunter
Re: 727 race rebuild question - 01/28/15 02:18 AM
I just rebuilt mine last summer I have a billet drum, red racing clutches and ultimate sprag.I have about 750hp.My old trans just had a rebuild kit and shift kit didn't hold up to big hp.
Posted By: 79410aspenrt
Re: 727 race rebuild question - 01/28/15 04:14 AM
I will be spraying a 150 shot of NOS. does this change the parts that are needed?
Posted By: slammedR/T
Re: 727 race rebuild question - 01/28/15 04:34 AM
smooth clutches in the rear clutch, linned or waffled clutches in the front clucth(direct) if no LBA valve body then get a billet front(direct) drum. If LBA valve body then a 47RE or BB 727 front drum will work, bolt-in rear sprag,wide cast kickdown band red lined, carbon low reverse band, billet rear servo, BB 727 planets will work. teflon seal ring kit, rear vent with catch can. Also the 727 handbook would be a good idea, it will explain some of the tricks like how to modify the front servo and getting a ported stator support shaft for better feed to the front clutch.
Posted By: booger
Re: 727 race rebuild question - 01/28/15 08:34 PM
FWIW, since LBA valve bodies have been mentioned, I thought I'd mention that there's ancillary work to do in order to get that to work if yo have a reverse shifting pattern VB. I'd say exactly what it is, but don't have the sheet that came with mine with me. IIRC there's a couple of holes to drill somewhere.
Posted By: John_Kunkel
Re: 727 race rebuild question - 01/28/15 10:31 PM
If the forward pattern VB was built from a kit (TF-3, Manual Pack) it is already LBA.
Posted By: booger
Re: 727 race rebuild question - 01/28/15 10:44 PM
Thanks I clarified my post. This is the link to the instructions I mentioned if anyone cares. I had it in my head that it was just a matter of changing the valve body to get the LBA to work.
http://www.coanracing.com/PDFS/InstallInstructions/COA-42011.pdf
