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#1 |
Registered User
Join Date: Apr 2011
Location: Tacoma, Washington
Posts: 236
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I've got some 700R4 issues
So I have a Stage 3 Raptor 700R4 transmission I put in my 72 K10 and as soon as it shifts to 4th it instantly locks up and bogs down the engine. At highway speeds the engine surges as it locks and unlocks. I have the TCI vacuum switch and newer brake light switch with the 4 terminals hooked up for the lock up converter. I'm kinda stumped and not sure what to do next. Oh and you can't feel the 1-2 shift but the 2-3 shift has a good kick and same for when it downshifts. Any help is greatly appreciated.
__________________
Erik 1969 Chevy K20 6.0L/4L80E/NP205 1971 Chevy C30 Cheyenne Longhorn 454/TH400 1979 Chevy K30 dually currently in pieces |
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#2 |
Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,445
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Re: I've got some 700R4 issues
By pass the vacum switch and put a dash mount switch on it to maually lock up and see if it cures the problem.
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
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#3 |
Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: I've got some 700R4 issues
Have you called the vendor?
Posted via Mobile Device
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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#4 |
Registered User
Join Date: Apr 2011
Location: Tacoma, Washington
Posts: 236
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Re: I've got some 700R4 issues
Yeah they said try to tighten the TV cable a little but that didn't help.
Posted via Mobile Device
__________________
Erik 1969 Chevy K20 6.0L/4L80E/NP205 1971 Chevy C30 Cheyenne Longhorn 454/TH400 1979 Chevy K30 dually currently in pieces |
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#5 |
Registered User
Join Date: Apr 2011
Location: Tacoma, Washington
Posts: 236
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Re: I've got some 700R4 issues
Seems I found that on the TCI vacuum switch there is the world's smallest allen head screw for adjusting it. At first look I thought it was just a rivet holding the switch together but I think I may have fixed it.
__________________
Erik 1969 Chevy K20 6.0L/4L80E/NP205 1971 Chevy C30 Cheyenne Longhorn 454/TH400 1979 Chevy K30 dually currently in pieces |
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