Topic: 1 minor problem...
in Forum: C3 Driveline Components
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Not sure if I should try to adjust anything yet, but the shift points of my Turbo350 are off now that I've driven it.
I'm wondering if I should just wait to worry about it until I've cycled some more fluid through the new radiator or what.
Could my shift problems be caused by an air bubble. I forced shifts by dropping it down to 2 and then bringing it back up to 3...
If I need to adjust the shift points, how do I go about it? Where does the TV cable come into play?
Thoughts?
Lifetime Member #73
The Money Pit.... and my niece 
(click to see a slightly larger version)
SPONSOR AD:: (Our Sponsors help support C3VR)
Lifetime MemberLanoka Harbor, NJ - USA
Joined: 12/21/2006
Posts: 828
Vette(s): 1975 metallic blue coupe with t-tops,L48, t/t steering, black leather interior. 1990 L98, white/red leather interior, auto,a/c
the tv cable comes into play later on while you are relaxing with a beer in your hand.
LIFETIME MEMBER #97
THE DYNAMIC DUO
THE DYNAMIC DUO
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20219
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
The cable on a 350 does nothing more than provide a kickdown signal for the tranz, and hold it in a lower gear at full throttle longer. There should be no tension on the cable except at full throttle.
What kind of issues are you having with the shifts? Late? Early? Taking off in the wrong gear?
Any air in the system will dissipate quickly as fluid pushes it out, so that's not what is happening.
More info please!
Oh...and make sure the vacuum line for the modulator on the tranz is connected to full manifold vacuum, and not ported vacuum.
Adams' Apple 2007-05-24 05:10:08
What kind of issues are you having with the shifts? Late? Early? Taking off in the wrong gear?
Any air in the system will dissipate quickly as fluid pushes it out, so that's not what is happening.
More info please!
Oh...and make sure the vacuum line for the modulator on the tranz is connected to full manifold vacuum, and not ported vacuum.
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Lifetime MemberPoquoson, VA - USA
Joined: 11/20/2004
Posts: 1023
Vette(s): 73 Conv, Blue-Green/White Top - 454, M21 - Dark Saddle Leather, Power Windows, A/C, Tilt/Tele, AM/FM St. (orig. and sounds like it too).#2 -- 2007 Coupe,3 LT package, Z51 option, Victory Red, Ebony Int. Clear Top.
[QUOTE=Adams' Apple]
Oh...and make sure the vacuum line for the modulator on the tranz is connected to full manifold vacuum, and not ported vacuum.
[/QUOTE]
2 cruzn 2007-05-24 05:56:23
Oh...and make sure the vacuum line for the modulator on the tranz is connected to full manifold vacuum, and not ported vacuum.
[/QUOTE]
Jim..
what was that vacuum line hanging down .. you said you had a coule of them and had always been like that.. maybe that is the one to the modulator... also I would make sure the transmission cooler lines didn't "kink ". Remember they did come close to the motor mount when we pulled the old one... they looked OK to me but you never know... It did seem like a modulator as it downshifted fast... of course it was also about midnight and a lot of things were dropping out fast by then 
Lifetime Member #86
USN 1966-1970
WestPac 67-68 Tet I&II
Featured in Corvette Enthusiast Aug 2007 "Shark Attack"
Blue Green *** 454,4 Spd, Dark Saddle Leather, A/C, AM-FM St. (orig), PW, Tilt -Tele Wheel"
(click to see a bigger image)
USN 1966-1970
WestPac 67-68 Tet I&II
Featured in Corvette Enthusiast Aug 2007 "Shark Attack"
Blue Green *** 454,4 Spd, Dark Saddle Leather, A/C, AM-FM St. (orig), PW, Tilt -Tele Wheel"
(click to see a bigger image)
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20219
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
IF the mod. is totally disconnected, the tranz will shift VERY late("redline"), and hard, but will upshift manually ok.
If it is connected to ported vac., it will also shift later than normal, but not at redline...
If it is connected to ported vac., it will also shift later than normal, but not at redline...
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
in Forum: C3 Driveline Components
SPONSOR AD: (Our Sponsors help support C3VR)