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Which manual valve body for 727?

Posted By: MOPARCRAZY

Which manual valve body for 727? - 07/20/15 03:30 AM

Tore down the tranny after what I figured was a sprag failure and it is toast. My current valve body doesn't have low band apply. Which low band apply manual reverse pattern body do you recommend?
Thanks for the help.
Lon
Posted By: Exit1965

Re: Which manual valve body for 727? - 07/20/15 03:51 AM

oops! below is forward pattern, didn't see you wanted RVMB.


Turbo Action 17875XA

17875XA: CHEETAH XtremeAction Pro Street and Race Manual (PRN321)
The 17875XA has a safe clean neutral and no need to use a button to backup. A clean rear band apply and release making it a great race or street valve body and No roller clutch failure. Provides full manual control only. No automatic features. Maintains stock shift pattern. Allows full engine braking (slow down) of vehicle by down shifting. This valve body is great for Drag Racing, Rock Crawling, Mud Bogging, Sports Car Racing and Pro Street. Eliminates use of passing gear linkage.

Posted By: skrews

Re: Which manual valve body for 727? - 07/20/15 03:57 AM

A&A
Posted By: DusterW2

Re: Which manual valve body for 727? - 07/20/15 02:32 PM

Griner Engineering

model # 1222G05B RMVB low band apply, high pressure

727specialist is a distributor
Posted By: herkamer

Re: Which manual valve body for 727? - 07/20/15 02:54 PM

Originally Posted By DusterW2
Griner Engineering

model # 1222G05B RMVB low band apply, high pressure

727specialist is a distributor




FYI, out of stock with no foreseeable date in the future. I just talked to Keith on Friday about it.
Posted By: DusterW2

Re: Which manual valve body for 727? - 07/21/15 04:01 PM

You could also try John Cope Racing Transmissions.

https://www.coperacingtrans.com/index.php?cPath=97_23&osCsid=500ebd8423a10f0acce084fd8f363f9d


PSRM-2 or CRT-22X models depending upon your HP level



https://www.facebook.com/CopeRacingTransmissions
Posted By: Polarapete

Re: Which manual valve body for 727? - 07/22/15 06:09 PM

Years ago I used the Cheetah RMVB #17156, but I now like the idea of a forward pattern so that I could pop the trans into neutral at the end of the run and coast down (we have lots of shut down room where I will be racing again). Theoretically, that will save an engine, but I have yet to see it proven.
Posted By: booger

Re: Which manual valve body for 727? - 07/22/15 07:39 PM

I picked one up not long ago from Coan, had to wait a couple weeks to get it though. http://www.coanracing.com/
Posted By: Chris2581

Re: Which manual valve body for 727? - 07/22/15 10:17 PM

Originally Posted By Exit1965
Turbo Action 17875XA

17875XA: CHEETAH XtremeAction Pro Street and Race Manual (PRN321)
The 17875XA has a safe clean neutral and no need to use a button to backup. A clean rear band apply and release making it a great race or street valve body and No roller clutch failure. Provides full manual control only. No automatic features. Maintains stock shift pattern. Allows full engine braking (slow down) of vehicle by down shifting. This valve body is great for Drag Racing, Rock Crawling, Mud Bogging, Sports Car Racing and Pro Street. Eliminates use of passing gear linkage.



This is what I'd use. Turbo Action makes very good products.
Posted By: Spaceman Spiff

Re: Which manual valve body for 727? - 07/23/15 01:33 AM

i went with a Cope RMVB.
But i have a '65 Cable shift trans in my car, so i can keep the push buttons.
Posted By: G-Money1320

Re: Which manual valve body for 727? - 07/23/15 02:20 AM

So will a FMVB non LBA valve body wear out a trans faster? I have one in my street car that sees occasional track duty.
Posted By: MOPARCRAZY

Re: Which manual valve body for 727? - 07/25/15 04:25 PM

Thank you for the input. I ordered an A&A. Robert was very helpful when I called so I went with them.
Thanks again for the replies.
Lon
Posted By: MOPARCRAZY

Re: Which manual valve body for 727? - 07/25/15 04:32 PM

It wont wear it out faster. The issue without low band apply is that low gear is all relying on the sprag. If/when it fails the front drum will overspeed and many times explodes. I was lucky my front drum didn't fail but still changed it. A lot depends also on weight of the car, torque, and 60 foot times. I ran without the low band apply for a long time. This is the first sprag I had fail but at 680 ft lbs torque, 3500 lbs car, and 1.29 60 foot, low band apply was overdue.
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