Transmission Grinding Into Reverse
Thread Starter
Supreme Member

Joined: Sep 2001
Posts: 1,195
Likes: 0
From: Flowery Branch, GA
Car: 1985 Iroc-Z
Engine: 1 BA 305 TPI
Transmission: Probuilt 700R4 - 2800 Stall Midwest
Axle/Gears: 3.42
Transmission Grinding Into Reverse
My transmission is making a grinding noise when I shift into reverse. Is my tranny about to die? The only thing that has been done to it was a corvette servo install about 3 weeks ago. The transmission fluid appears to be at the right level. Any ideas??
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Thread Starter
Supreme Member

Joined: Sep 2001
Posts: 1,195
Likes: 0
From: Flowery Branch, GA
Car: 1985 Iroc-Z
Engine: 1 BA 305 TPI
Transmission: Probuilt 700R4 - 2800 Stall Midwest
Axle/Gears: 3.42
I'm not sure about your car but mine, and all other cars that I have seen have a dipstick, just like the oil. It is close to the firewall.
Member
Joined: Nov 2001
Posts: 149
Likes: 0
From: Shreveport, LA, USA
Car: Tahoe
Engine: 350
Transmission: T56
T-5: two holes
one drain one fill
Put car on stands
Use standard socket wrench
Insert into the top bolt and romove
insert pinkey
Feel for fluid
fill till it runs out.
Best way to fill. You will under stand if doing it alone.
1 squeeze bottle
4" of rubber hose. collant over flow hose 1/4" id
Fill with ATF
Don't post to verify ATF, USE ATF
one drain one fill
Put car on stands
Use standard socket wrench
Insert into the top bolt and romove
insert pinkey
Feel for fluid
fill till it runs out.
Best way to fill. You will under stand if doing it alone.
1 squeeze bottle
4" of rubber hose. collant over flow hose 1/4" id
Fill with ATF
Don't post to verify ATF, USE ATF
Senior Member
Joined: Aug 2002
Posts: 804
Likes: 0
From: Vancouver B.C. Canada
Car: 1984 Z28
Engine: 350
Transmission: T5
lol.. which is better?? T-5 or 700r4, whats the difference? im still kinda new to the whole car scene, i know lots of ****, just not everything.
Member
Joined: Aug 2002
Posts: 157
Likes: 0
From: Wichita Falls, Texas
Car: 91 Firebird
Engine: 305 tbi
Transmission: manual
just a little advise, if you are grinding into reverse. first put the trans into 5th, that will synch the gears and then put it into reverse. this will keep you from grinding and extend the life of your trans. not a fix but a little help.
Member
Joined: Aug 2002
Posts: 157
Likes: 0
From: Wichita Falls, Texas
Car: 91 Firebird
Engine: 305 tbi
Transmission: manual
Yep, it did that on mine when i first got it. Reverse is not a synchronized gear so with wear it will grind. i always put it in 5th and then right into reverse and no grinding.
Junior Member
Joined: Mar 2012
Posts: 32
Likes: 0
Car: 1989 pontiac firebird trans am GTA
Engine: TPI 350
Transmission: auto 700r4
Axle/Gears: borg warner 9 bolt and 3.27
Re: Transmission Grinding Into Reverse
i have a 700r4 trans and it grinds in reverse and when its in drive anybody have any thoughts on it?
Senior Member
Joined: Mar 2005
Posts: 992
Likes: 1
From: Sacramento, California
Car: 92 RS
Engine: a slow one
Transmission: a crunchy one
Axle/Gears: a whiny one
Re: Transmission Grinding Into Reverse
Grinding in reverse is usually a clutch adjustment problem however. Make sure you have the proper free play adjusted on it, that it is fully bled, and the slave cylinder is completely full
If adjusted properly, it should stop the grind going into reverse
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