700r4 longevity and torque converter concerns
Thread Starter
Supreme Member
Joined: May 2003
Posts: 1,995
Likes: 0
From: Toledo, OH
Car: 1992 Firebird
Engine: forged 357
Transmission: 700r4, 2200-2400 stall, vette servo
Axle/Gears: stock pegleg 2.73 drum (temp)
700r4 longevity and torque converter concerns
My transmission has 131,600 miles on it, without being rebuilt. It shifts moderately okay. It's been a little sloppy from 2-3 and 3-4 since I did my engine project last spring (6 months, ~4k miles ago) but it hasn't gotten any worse. I had Brian at TBIchips do my PROM. He has the lockup set for a 2000-2400 converter however I'm running the stock converter. Sometimes on the highway my converter comes unlocked (I think- because RPMs can be at like 2300 rpm at 75-80 mph but then 2000 rpm at 80 mph). I don't know whether it's normal or not, seeing as the tranny is so old and due for a flush. The TV cable is also fairly tight, however I'm not positive that it's 100% as tight as it gets due to the crappy vortec mounting brackets...
I am certain that after 131k the tranny itself is in spectacular shape, which I attribute some to my cooler I installed on it last summer... But is it okay to put a S10 converter in this guy? Or should I go buy a rebuilt 700r4 instead? I mean, do you think think I'm putting my tranny at unneccessary risk? I'd think that if I made it 4k+ with it acting this way that it would get worse if there was really a problem- I think it's just a simple fix such as tightening the TV cable or maybe a sensitive lockup speed.
Give me any input you feel I should know. I can take it like a man. I won't feel bad if you think I should replace my transmission, however that's my last ditch effort
I am certain that after 131k the tranny itself is in spectacular shape, which I attribute some to my cooler I installed on it last summer... But is it okay to put a S10 converter in this guy? Or should I go buy a rebuilt 700r4 instead? I mean, do you think think I'm putting my tranny at unneccessary risk? I'd think that if I made it 4k+ with it acting this way that it would get worse if there was really a problem- I think it's just a simple fix such as tightening the TV cable or maybe a sensitive lockup speed.
Give me any input you feel I should know. I can take it like a man. I won't feel bad if you think I should replace my transmission, however that's my last ditch effort
Senior Member
Joined: Apr 2002
Posts: 672
Likes: 0
From: Houston, Texas
Car: 1989 GTA Nighthawk
Engine: 389 CID TPI
Transmission: TCI 700R4
Axle/Gears: 9 bolt 3.23
Well, if you can do without your car for awhile, run it till it breaks. If you don't want to be stranded and want a short down time. Order a new tranny.
As for the TC, I've fragged 2 aftermarket ones, read rebuilt OEM. Now I have a Vigilante, I don't expect any more problems.
As for the TC, I've fragged 2 aftermarket ones, read rebuilt OEM. Now I have a Vigilante, I don't expect any more problems.
Thread
Thread Starter
Forum
Replies
Last Post
TheTraut88
Engine/Drivetrain/Suspension Parts for Sale
1
Sep 7, 2015 05:22 PM





