After a band adjustment and fluid/filter change my 727 shifts much better. But it still has that annoying BANG everytime I put it in reverse. This truck has always done it, but it's really starting to get on my nerves. This trans has been rebuilt before, so I don't know what the rebuilder changed on it (that was before my time).

In a nutshell, what causes this and can it be fixed without tearing into the transmission.

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2

I remember from school that reverse has higher line pressure. That may be true and may not, but kinda sounds correct. Just a thought.

U-joints?

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Casually looking for a Clifford hyperpak intake for cheap.

No it's not U-joints, the new joints are new.

It just goes into reverse REALLY hard. My duster didn't do that, but this truck sure does.

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2

Line pressure is much higher in reverse than in a forward range, so it'll engage harder. Post-'65 (I think) clutches have a wave-spring washer to cushion engagement; some rebuilders remove this in the belief that it's bad. Also make sure the bands are adjusted correctly; a loose adjustment will aggravate the condition.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

What rpm is the engine turning when engaging reverse?

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

The engine is turning 750 RPM when it's put into gear.

Dan, I guess that wave spring washer was removed during the rebuild. My dad managed to burn the transmission up in this truck twice towing a 2000 pound trailer. Before that it had a history of trans slippage problems, such as being unable to pull a 12 boat up the boat ramp. How he managed to kill a 727 that's behind a slant, I have no clue. I adjusted my bands last week when I did a fluid/filter change and added an auxillary trans cooler.

The guy who rebuilt this trans died a couple of years back, but for some reason every transmission he did never did shift right after he was done with it. He rebuilt the C-6 in my dad's 75 Ford and it never did behave properly afterwards. The 727 in this truck shifts much better after fiddling with the kickdown linkage but it still does the same thing the C-6 did, shift late when it's nailed to the floor.

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2

Transmissions from the mid 70s-up had check balls and orifices in the transfer casting that allowed the gears to slowly apply,but quickly release. This was due to higher idle speeds because of emission controls,but many customers complained about the slow engagement shifting into Drive and Reverse. This is just a WAG,but maybe they were removed to quicken the shift. It was very common practice for trans shops to remove them along with the wave snap rings Dan mentioned

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V8?? We don't need no stink'n V8!!

Thanks for your input. So I'm guessing that it won't hurt a thing as long as I keep my bands adjusted?

Do you think it would be worth the effort to drop the valve body and see if they are still there?

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2