Wont shift from 3 to 4 under WOT?
Thread Starter
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
Wont shift from 2 to 3 under WOT?
Hey guys, my 700r4 will not shift into 4 when i have the throttle wide open. My car is an 88 with 350 and 3.42 gears. When I go WOT it will run up to 70 and the engine will just keep climbing in rpms, the highest I got was to 6000. When I let off it shifts fine. By the way it is a stock converter. Is something sticking or is it supposed to do that?
Thanks
Thanks
Last edited by 3rdgenmaro; Feb 6, 2006 at 12:15 PM.
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Posts: 1,367
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From: Nanticoke, Pa
Car: 89 Firebird
Engine: 406 CI
Transmission: Pete K 700R4
Axle/Gears: 3:55
It is supposed to do that. Vettes and police cars have a different valve in the valve body that allows for the 3-4 upshift at wide open throttle.
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From: southwest va
Car: 1989 IROC-Z
Engine: 350
Transmission: T-56
Axle/Gears: 9bolt 3.27
you mean 2nd to 3rd right 700r4's 4th is overdrive. your unlucky some wont shift like your describing at wideopen throttle some will mine would everytime. i dont know what to tell you other than maybe adjust your cable.
Thread Starter
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
On second thought, IBADROC must be right, it must be the 2 3 shift. Is this still caused by the same valve? I also forgot to mention that I have a bm shift kit in it as well. Also when I am going down the road about 40 or 50 and I go WOT the motor just revs and I dont feel the car want to go forward. It just feels like it is in neutral. Could this be caused by the same valve that you guys were talking about?
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Joined: Mar 2003
Posts: 157
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From: New Jersey
Car: 87 plane jane with gfx
Engine: 350 worked vortec head .515 .515 cam and 1.6 rockers and shorties for now til i can afford the supercomps
Transmission: super t-10 or t-5
Axle/Gears: auburn with 3.42 stock axles
you or whoever installed the shift kit probably put the wrong springs in the wrong spots or something
Thread Starter
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
im 99% certain that it is in right. I done the hardest shift and it replaced all the accumulator springs with spacers. It also replaces one spring inside the valve body with a spacer. So Im sure i didnt do anything like that. But I could be wrong.
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Thread Starter
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
i thought about that too. that could be a possibility. when I dont drive it aggressively it drives and shifts fine through all gears. I just dont know what it all could be. I have never driven a stock 700r4 before. Im not really sure what to expect out of one. If it were a check ball would it shift correct at all?
Thread Starter
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
how do stock 700r4s perform? I mean how did these cars shift and work when they are new?
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From: San Antonio, TX
Car: 1988 IROC-Z
Engine: L98 (350 TPI)
Transmission: MD8 (700 R4) + 3.42 LS1 Rear
Originally posted by 3rdgenmaro
how do stock 700r4s perform? I mean how did these cars shift and work when they are new?
how do stock 700r4s perform? I mean how did these cars shift and work when they are new?
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Joined: Aug 2005
Posts: 618
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From: San Leandro(Oakland)
Car: '92 Toyota Pickup
Engine: 22R-E
Transmission: 5sp Manual
Axle/Gears: 4:??
Originally posted by mystikkal_69
pillow soft, like a cadilliac.
pillow soft, like a cadilliac.
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
my stock 700R4 would upshift to 4th in WOT. most of my friends cars wouldn't.
http://www.transamws6.com/video/130mph.wmv
http://www.transamws6.com/video/130mph.wmv
Thread Starter
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
i guess it is supposed to do that then. I can hold mine down and the fastest it will run is around 80 as well. Thanks for the video.
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