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03-30-2005, 12:10 AM
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#1 |
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Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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69's th400 won't shift out of 1st...wtf...
well just put a new intake on it...holley carb,,,, o yea lifters.....
airrade spacer......run's excellent.....just won't go  th400 stuck in first gear.....now what? |
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03-30-2005, 12:17 AM
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#2 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Is the vacuum for the tranny hooked up to the carb?
__________________
Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads |
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03-30-2005, 12:19 AM
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#3 |
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He's got mean nasty FANGS!
 
Join Date: Dec 1999
Location: Rockwell, NC
Posts: 6,514
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Could either be the vac modulator or the governor, thats what i'd check first...
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2004 K2500 Burb 1999 C3500 1985 Cutlass Supreme 1969 C-10 1967 C-10 Panel josh@67-72chevytrucks.com |
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03-30-2005, 12:21 AM
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#4 |
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Custer had a plan too.
Join Date: Dec 2003
Location: No. California
Posts: 344
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Once my truck would not shift out of first. I had knocked the vac line loose.
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72 K15 GMC (aka Big White) Performance Rockers, Cab Corners, and Floors Fossil Fuel Glutton Neighborhood Nuisance 98 BMW 540i for Speed (Sold  )05 Subaru Outback for mileage |
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03-30-2005, 02:39 AM
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#5 |
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Registered User
Join Date: Oct 2004
Location: Issaquah, WA
Posts: 72
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Will the trans shift through the gears if you run through them manually (L1, L2, D) instead of starting just in Drive?
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Truck #1: 1972 Chevrolet K20 Cheyenne Custom Camper SB400, TH400, NP205 Truck #2 1967 Chevrolet C10 Custom Sport Truck 327 small journal, TH400 |
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03-30-2005, 09:42 AM
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#6 |
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Never enough time!!
Join Date: Mar 2004
Location: sw Wisconsin
Posts: 601
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That would be my guess...vacuum line off at one end or the other, should shift up manually though.
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03-30-2005, 12:22 PM
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#7 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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Mine did that too, cept if you really pushed it,then it'd shift. I just knocked the modulator line off enough that it looked like it was on, but it wasn't :P
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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03-30-2005, 05:55 PM
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#8 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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yep, if you shift it manually, and it shifts, then your modulator is either not hooked up...not getting proper vac...or inoperative.
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