How much damage .

[Jesse's85]

I was on the highway doing around 65 when i reached fir the radio and moved the shifter lever down to 2nd gear. How much damage did i do to my transmission it feels weaker than how it was. my truck is 1985 350/350 combo Thanks for the responses and happy easter
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[Keith Seymore]

Seems like it should be ok to me. You should be able to do 65 mph in second gear, plus the potential damage would be from over-reving the engine (rather than your trans - which doesn't seem likely).

Give it a few days and see if it is just your imagination.

K

[Jesse's85]

Thank you sir for the reponse the shop guys told me the same thing but it feels weaker and sounds a little funny but might be my imagination about worring and over thinking it. The truck just hit 40000 miles on both eng and trans
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[GM-power]

I agree with Keith, that engine damage would be more likely than messing up the tranny. Its probably your imagination cause that seems to be a big culprit with most noises and feelings with the vehicle.
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[Big Port Jimmy 6]

I knocked may last Turbo 350 into reverse at about 45 and it lived. You are imagining things. Jay

[THE "10" SILVERADO]

Originally Posted by Big Port Jimmy 6

I knocked may last Turbo 350 into reverse at about 45 and it lived. You are imagining things. Jay

I've hit mine into park a couple of times while moving (after the engine had died and I needed to re-start) and it's still here.

[andrewmp6]

Yeah im with Keith over reving your engine would cause more damage faster then knocking the trans down a gear.A turbo 350 is a pretty strong trans even stock i wouldn't worry about it just don't do it again lol.

[piecesparts]

You know hitting reverse at 65 is something to worry about, but I have done it in the past. That is why I now have floor shifters with a positive lock for going into reverse. Dropping into second at 65 is not that bad, and it may have shaken you up more than the truck.

[pwradder]

this must be a common problem with these squares, i knocked mine into neutral on the highway while messing with the radio too.

[mooseknuckles]

accidentally down shifting from 3rd to 2nd???.....isn't that what happens when passing??....3rd to 2nd is nothing...doin 65 and hitting reverse or park now that's a little different!

[clinebarger]

Originally Posted by mooseknuckles

accidentally down shifting from 3rd to 2nd???.....isn't that what happens when passing??....3rd to 2nd is nothing...doin 65 and hitting reverse or park now that's a little different!

It's not exactly the same thing, In manual 2nd the Intermediate Band applies that prevents the Intermediate Sprag from overrunning...This is what provides engine braking.
On a Automatic 2nd shift with the lever in Drive....Only the Intermediate clutches apply & the Sprag will overrun if you let off the gas.