TRNW-2: 68rfe Rev Max parts

Thu Oct 23 08:26:53 PDT 2025

These work good and seem to last with Mopar pump and valve body and
upgraded converter. The diesel units always se to have erosion on the
valvebody casting & plate. We don’t do high performance but most are
deleted with a little extra power. There’s a lot of posts here of guys
getting beat up on performance or upgraded 68s.

On Thu, Oct 23, 2025 at 11:17 AM Tod Chretien via trnw2 <trnw2 at trnw.net>
wrote:

> Thank you Mark!
>
> The shop I used to work for in Stockton just built a 68RFE with a tuneless
> kit and it came back with the input drum exploded. And the builder here at
> Ralphs (Rodney) won't use the tuneless kit because he claims he a had
> couple come back on him with broken components. I always figured they must
> have installed the kit in a tuned truck. However I just confirmed that the
> one they just built in Stockton only has 160 psi commanded line pressure in
> drive, so it's not tuned.
>
> Things that make you go Hmmmmmm...
>
> --
> Best Regards,
> Tod Chretien
> TRNW Inc.https://www.trnw.net
>
>
> On 10/23/2025 6:59 AM, Mark Puccinelli wrote:
>
> No pressure relief system built into the tuneless kits.
>
> On Thu, Oct 23, 2025 at 6:47 AM Tod Chretien via trnw2 <trnw2 at trnw.net>
> wrote:
>
>> >* general consensus was sometimes those tuneless kits put out way more
>> than the advertised 220 or so psi*
>> Don't they have a pressure relief built into that tuneless kit? Maybe one
>> of the Transgo guys can comment on this statement. Mark? Robert? Randy? You
>> guys home? LOL
>>
>> --
>> Best Regards,
>> Tod Chretien
>> TRNW Inc.https://www.trnw.net
>>
>>
>> On 10/22/2025 12:40 PM, Steve Everett wrote:
>>
>>     I've used both of those numerous times, but a little over a year ago
>> I had a unit come back that had been out a few months,  the accumulators
>> had blown out of the vb, pulling the heads off a couple of the screws and
>> bending the plate a good bit, I posted about it on the forum, and general
>> consensus was sometimes those tuneless kits put out way more than the
>> advertised 220 or so psi ?
>>
>>    I've probably got 12 or 15 68rfe's out there with my name on them
>> using the tuneless kits,  that was the only one that caused a problem as
>> far as I know ?   but I've been a little hesitant to use them since then
>>
>>    Steve
>>
>> On Wed, Oct 22, 2025 at 2:43 PM Tod Chretien via trnw2 <trnw2 at trnw.net>
>> wrote:
>>
>>> That seems over-kill if it's not tuned. I would use the Transgo Tuneless
>>> kit myself. They shift great with that kit. I also like that Transgo OD
>>> pressure plate that allows for an additional clutch.
>>>
>>> --
>>> Best Regards,
>>> Tod Chretien
>>> TRNW Inc.https://www.trnw.net
>>>
>>> On 10/22/2025 10:06 AM, Steve Everett wrote:
>>>
>>>   I've seen the channel plate used in a couple shops I was at, by the
>>> other builder,  I've used the seperator plate on a lot of builds, even
>>> stock builds,  we've got a customer from out of town, broke down here, and
>>> he wants an upgraded rebuild, we're pricing him a Rev max drum, which comes
>>> already built ?  I didn't know that until I priced it, a billet input shaft
>>> and that valvebody kit,  the truck isn't tuned, totally stock, we are
>>> pricing in a billet converter of course,
>>>
>>>   Steve
>>>
>>> On Wed, Oct 22, 2025 at 12:59 PM Tod Chretien via trnw2 <trnw2 at trnw.net>
>>> wrote:
>>>
>>>> I have used the separator plate and the channel plate but not their
>>>> accumulators. The channel plate is needed on anything with a tune.
>>>>
>>>> --
>>>> Best Regards,
>>>> Tod Chretien
>>>> TRNW Inc.
>>>> https://www.trnw.net
>>>>
>>>>
>>>>
>>>> On 10/22/2025 8:30 AM, Steve Everett via trnw2 wrote:
>>>> >    I have not used any of Rev Max's parts for these other than the
>>>> > bonded seperator plate,  has anyone used their 68rfe-347 valve body
>>>> > foundation build kit ?  comes with channel plate, seperator plate and
>>>> > billet accumulators,
>>>> >
>>>> > Steve
>>>> >
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>>>
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>>
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>
>
>
> --
> *Mark Puccinelli*
> *Product Support Technician*
> *TransGo*
> *mark.puccinelli at transgo.com <mark.puccinelli at transgo.com>*
>
>
> *Adjunct Driveline Professor*
> *Skyline College*
> *San Bruno,CA*
> *puccinellim at smcc <puccinellim at smccd.edu>d.edu <http://d.edu>*
>
>
>
> Visit me on Facebook:
> https://www.facebook.com/mark.puccinelli.7
>
>
>
>
>
>
>
>
> --
> Best Regards,
> Tod Chretien
> TRNW Inc.https://www.trnw.net
>
> This message was sent from the TRNW Technical Discussion Forum (trnw2).
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