Transmissions and Drivetrain Need help with your trans? Problems with your axle?

700R4 problem

Old Jul 5, 2005 | 06:51 PM
  #1  
PDubs87Z28's Avatar
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
700R4 problem

When im on the highway and i go to floor my car it revs up to 5000 then i have to lay off the pedel then it will catch.....Is my trans ganna blow up or something???? What could cause that??? When i drive through the city and i go to floor it it responds perfectly. only on the highway over 65/70mph it revs high then drops....HELP!!!!!!
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Old Jul 5, 2005 | 07:30 PM
  #2  
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From: Nanticoke, Pa
Car: 89 Firebird
Engine: 406 CI
Transmission: Pete K 700R4
Axle/Gears: 3:55
Put a fork in that trans. It is done. Classic case of worn 3-4 clutch packs.
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Old Jul 5, 2005 | 07:44 PM
  #3  
PDubs87Z28's Avatar
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
really......should i get it re-built with a shift kit and a B&M megashifter??
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Old Jul 6, 2005 | 12:04 PM
  #4  
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From: Newark, DE
Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
Yup. It's got one foot in the grave. Eventually it will do that with every shift, and then it just won't shift. Get it rebuilt now and you should be able to save all the hard parts.

Definately add a TransGo reprogramming kit. It's the best kit on the market and will make for a smooth shifting trans at part throttle and a neck snapping one at WOT. If you have altered your engine, or plan to I would highly recommend a set of Vette servos.

If you plan to get into the 350+ HP range I would say go with a Probuilt kit for the rebuild. This has all the goodies, and is rated up to 575 HP. The kit is $500 and includes the TransGo kit, Beast sunshell, 10-vane pump guts, and all the parts needed for a full rebuild. Check out www.700r4l60e.com for ProBuilt's website. I would definately go with their kit over a TCI, Hughes, or B&M. Probuilt has much, much more experience with 700R4s than any other company, and has actually helped design a lot of the parts TransGo sells for the 700R4.
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Old Jul 6, 2005 | 04:47 PM
  #5  
PDubs87Z28's Avatar
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
if i buy a brand new trans through them can i still use it with my 305 until i get a new SBC??? or should i wait to do it all at once....money is tight to do both at once but i can do the trans now thats why it doesn't bother me too much and too boot i have a back up car that i use now because the camaro doesn't have an inspection sticker
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Old Jul 6, 2005 | 07:33 PM
  #6  
PDubs87Z28's Avatar
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
ttt
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Old Jul 6, 2005 | 08:12 PM
  #7  
Floor guy's Avatar
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From: Nanticoke, Pa
Car: 89 Firebird
Engine: 406 CI
Transmission: Pete K 700R4
Axle/Gears: 3:55
Originally posted by PDubs87Z28
if i buy a brand new trans through them can i still use it with my 305 until i get a new SBC??? or should i wait to do it all at once....money is tight to do both at once but i can do the trans now thats why it doesn't bother me too much and too boot i have a back up car that i use now because the camaro doesn't have an inspection sticker
\

You can, and should use it with your 305.
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Old Jul 7, 2005 | 10:40 AM
  #8  
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From: Newark, DE
Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
Yeah, no reason not to. The converter will stall differently with a 305 than with a 350, but otherwise there would be no real difference.
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Old Jul 8, 2005 | 02:46 AM
  #9  
PDubs87Z28's Avatar
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
Im going to check out Mad Dog Transmissions to see how they are...anyone ever use one of theirs?
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Old Jul 8, 2005 | 04:29 PM
  #10  
PDubs87Z28's Avatar
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
Originally posted by PDubs87Z28
Im going to check out Mad Dog Transmissions to see how they are...anyone ever use one of theirs?
ttt
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Old Jul 8, 2005 | 10:26 PM
  #11  
Floor guy's Avatar
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From: Nanticoke, Pa
Car: 89 Firebird
Engine: 406 CI
Transmission: Pete K 700R4
Axle/Gears: 3:55
I have no first hand experience with Mad Dog. However, a few corvette forum guys have posted positive opinions of his work lately.
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Old Jul 9, 2005 | 02:25 PM
  #12  
PDubs87Z28's Avatar
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Joined: May 2005
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From: New Jersey
Car: 87 Z28 Hardtop
Engine: 305ci-4bbl
Transmission: 700R4...3.27 posi being installed
i checked out his web-site and it sames good to go...i might go with his high performance 700R4 because its like $800 cheaper than Pro-built.....i gotta see which to get
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