700r4 Won't shift until 6-7k rpm at WOT
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Junior Member
Joined: Apr 2010
Posts: 10
Likes: 0
From: Rochester NY
Car: 87 IROC, 2002 Formula, 70 Camaro SS
Engine: 305 tpi, LS1, 383 stroker
Transmission: 5 speed t5, 6 speed & 700r4
700r4 Won't shift until 6-7k rpm at WOT
I just recently bought a 88 I-ROC Z28 with the 305 TPI (190hp engine) and my first ever 700r4. I have only owned T-5's before. I searched the forums about late and delayed shifting and have since had the TV cable professionally adjusted since that was the most common cause.
At WOT the car will not shift gears until way past the red-line. I am talking it will not shift until it hits 6000-7000 rpm, and when it does shift, it shifts fine down to 4000 rpm. There is no governor and rev limiter to it obviously since it winds up past 5000 rpm.
I had checked the transmission fluid level, added half a quart and a can of BG Automatic transmission conditioner to help clean any sludge or anything in it.
Has anyone else ever had this problem before? Could this be a custom chip in the computer or a shift kit? Any ideas?
At WOT the car will not shift gears until way past the red-line. I am talking it will not shift until it hits 6000-7000 rpm, and when it does shift, it shifts fine down to 4000 rpm. There is no governor and rev limiter to it obviously since it winds up past 5000 rpm.
I had checked the transmission fluid level, added half a quart and a can of BG Automatic transmission conditioner to help clean any sludge or anything in it.
Has anyone else ever had this problem before? Could this be a custom chip in the computer or a shift kit? Any ideas?
Member
Joined: Sep 2010
Posts: 113
Likes: 0
From: NE Ohio
Car: 84 z28
Engine: 305 for now, lil more then stock
Transmission: 700r4 for now
Re: 700r4 Won't shift until 6-7k rpm at WOT
Sounds like a sticking tv valve or spring or contamination in bore try disconnecting tv cable and at idle by hand yank the cable in and out fast several times tv cables are easy to adjust after yanking on it kill engine hook cable back up press in D shaped button on the adjust tap push plastic piece all the way in toward firewall Get in car an mash the gas pedal to floor return to engine by hand turn throttle lever to wot make sur its tight u can double check by having some1 press throttle pedal to ground and while holding down the D shaped button push plastic part toward fire wall. If none of this helps u might have a sticking governor or stripped gear
Joined: Oct 2001
Posts: 12,214
Likes: 1,140
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 700r4 Won't shift until 6-7k rpm at WOT
Id check the gov 1st..
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From: Chasing Electrons
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Transmission: check
Re: 700r4 Won't shift until 6-7k rpm at WOT
I just recently bought a 88 I-ROC Z28 with the 305 TPI (190hp engine) and my first ever 700r4. I have only owned T-5's before. I searched the forums about late and delayed shifting and have since had the TV cable professionally adjusted since that was the most common cause.
At WOT the car will not shift gears until way past the red-line. I am talking it will not shift until it hits 6000-7000 rpm, and when it does shift, it shifts fine down to 4000 rpm. There is no governor and rev limiter to it obviously since it winds up past 5000 rpm.
I had checked the transmission fluid level, added half a quart and a can of BG Automatic transmission conditioner to help clean any sludge or anything in it.
Has anyone else ever had this problem before? Could this be a custom chip in the computer or a shift kit? Any ideas?
At WOT the car will not shift gears until way past the red-line. I am talking it will not shift until it hits 6000-7000 rpm, and when it does shift, it shifts fine down to 4000 rpm. There is no governor and rev limiter to it obviously since it winds up past 5000 rpm.
I had checked the transmission fluid level, added half a quart and a can of BG Automatic transmission conditioner to help clean any sludge or anything in it.
Has anyone else ever had this problem before? Could this be a custom chip in the computer or a shift kit? Any ideas?
Odds are the tach is off. There is a sticky about this on the Electronics board here on TGO. Check that out first before futzing with any trans adjustments.
RBob.
Supreme Member
Joined: Nov 2010
Posts: 1,074
Likes: 9
From: VA
Car: 88 camaro irocz
Engine: l98 tpi
Transmission: 700r4
Axle/Gears: 2.77
Re: 700r4 Won't shift until 6-7k rpm at WOT
thats what i was gonna say rbob . mine does it an i know my tach is off i run 3000 rpm's at 70 mph . op where is your tach at at 70 mph ? an yes mines shifting into overdrive an the converter is locking
Supreme Member
Joined: Jan 2011
Posts: 1,932
Likes: 9
From: Lynden WA
Car: 84 Trans Am, 84 Fiero, 86 944
Engine: 5.0, 2.5, 2.5
Transmission: 5spd
Re: 700r4 Won't shift until 6-7k rpm at WOT
i have 4l60e and similar problems high redline the engine in first and then kicks like a mule into second and chirps the tires, then it wont shift again after that, i run 5k at 70 mph
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