Tranny Break-in
Thread Starter
Junior Member
Joined: Mar 2004
Posts: 47
Likes: 0
From: Ravensdale, WA
Car: 89 RS
Engine: 305 TBI
Transmission: 700R4
Tranny Break-in
The '91 Z28 that I'm buying today has a freshly rebuilt 700R4. The old owner says that there's about 120 miles on the rebuild. Is there any kind of break-in process that I need to go through? Should I change out the fluid? I suppose it means I have to take it easy on the gas once I get it, no stoplight racing 
How long do i have to behave??
Thanks!
~Chris
How long do i have to behave??Thanks!
~Chris
Senior Member
Joined: Jul 2002
Posts: 512
Likes: 0
From: Oviedo, FL
Car: 1984 Trans Am WS6
Transmission: 700r4 Highly Modified
You should be able to drive it however you want at this point. You may want to change the fluid out in a few more miles just to make sure there's no crap in it from the rebuild. Maybe at 500 miles or so.
Thread Starter
Junior Member
Joined: Mar 2004
Posts: 47
Likes: 0
From: Ravensdale, WA
Car: 89 RS
Engine: 305 TBI
Transmission: 700R4
Thanks!
As I was driving it home, I noticed it was shifting REALLY early. Steady Pedal, I was in 4th by about 30 MPH. The tach doesn't work, but it felt like it shifted into 2nd at about 2500 RPM or less. Is this a normal thing? Is there a vac advance that I need to adjust or anything?
As I was driving it home, I noticed it was shifting REALLY early. Steady Pedal, I was in 4th by about 30 MPH. The tach doesn't work, but it felt like it shifted into 2nd at about 2500 RPM or less. Is this a normal thing? Is there a vac advance that I need to adjust or anything?
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TinnMann2
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Jun 18, 2017 05:10 PM