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valve body question

Posted By: cudaben1968

valve body question - 09/28/08 01:49 AM

would a valve body from a 65 727 in a 68 727 have any problems? i know the 66-7? is the same but what would happen with a pre 66? I hada 65 one in mine and the trans had no reverse or high gear, i pulled the valve body and did the press. tests and all worked right... could it be my valve body? I have a aftermakret one i think its turbo action i bought like 2 years ago for a 66 up style, just wondering if that could be my problem
Posted By: cudaben1968

Re: valve body question - 09/28/08 07:38 AM

nobody knows about transmission valve bodies???
Posted By: 1_WILD_RT

Re: valve body question - 09/28/08 07:54 AM

65 is cable shift...
Posted By: LA360

Re: valve body question - 09/28/08 08:07 AM

I know there are about 10 different types of Valves bodies for the 727. I would double check tat all the prts line up with your transmission. It could be very likely your valve body is the problem. I know that A&A make one specifically for the earlier style.
AL...
Posted By: cudaben1968

Re: valve body question - 09/28/08 08:30 AM

i know 65 would be cable shift but irt isnt, it may just be a 65 tail housing it has the different trans mount and when i talked to schumacher he told me it was 65 style...
Posted By: dartman366

Re: valve body question - 09/28/08 12:11 PM

do you have the stamped number's off the side of the pan rail? that will indicate the year and application of the trans, also the valvebody will have a cast number inside a little sunburst, that should indicate the year of mfg.

I was thinking that from 66 to 72 was interchangeable and 72 up to ?? was interchangable,,but I may be thinking 904's, hope this help's.
Posted By: 65dragnet

Re: valve body question - 09/28/08 02:56 PM

Quote:

would a valve body from a 65 727 in a 68 727 have any problems? i know the 66-7? is the same but what would happen with a pre 66? I hada 65 one in mine and the trans had no reverse or high gear, i pulled the valve body and did the press. tests and all worked right... could it be my valve body? I have a aftermakret one i think its turbo action i bought like 2 years ago for a 66 up style, just wondering if that could be my problem


As my past experience you can not use a65 valvebody in a late model case the rooster comb is different , plus you already know it a cable shift , now you can interchange parts like valves and upper half but thats about it imo
Posted By: John_Kunkel

Re: valve body question - 09/28/08 07:25 PM


If you're using casting dates on the VB castings to determine the year, many '66 VB's will have '65 casting dates as will the other transmission components. There is no way a '65 VB will physically work in a '66 trans.

A '66 VB will work in a '68, if there is no Reverse or 3rd there is a problem with the front clutch.
Posted By: cudaben1968

Re: valve body question - 09/29/08 12:51 AM

ok so if i do the pressure tests and the front clutch moves freely everytime then what? I had a little reverse movement for a mintue then it stopped... rear band???
Posted By: John_Kunkel

Re: valve body question - 09/29/08 07:49 PM


If Reverse and 3rd are missing the problem is in the front clutch, the air check can be deceiving. The line pressure in Reverse is 3-4 times higher than in the forward gears so a faulty clutch can partly engage in Reverse but not 3rd.
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