Topic: Muncie side cover switch
in Forum: C3 Driveline Components
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Former Member
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Houston, TX - USA
Joined: 2/7/2008
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Vette(s): 1970 454 4 speed A/C power everything else
Anyone know where I can find the switch that goes on the front shift lever hole on the side cover of a Muncie transmission?
Thanks!
Thanks!
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That switch is for the TCS(Transmission Controlled Spark) system for the distributor vacuum.
I think Paragon may have them, or Lectric Limited....
It's purpose is to allow full vacuum to the dist. in 3rd & 4th gear only when at operating temp. When cold, or overheated, the temp sender allows full vac. Any other time, it is controlled b y the TCS switch on the trans. The earlier cars also have a timer/delay relay on them. '73 was the last year for the delay...
Adams' Apple 2008-03-10 06:38:31
I think Paragon may have them, or Lectric Limited....
It's purpose is to allow full vacuum to the dist. in 3rd & 4th gear only when at operating temp. When cold, or overheated, the temp sender allows full vac. Any other time, it is controlled b y the TCS switch on the trans. The earlier cars also have a timer/delay relay on them. '73 was the last year for the delay...
Joel Adams
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Former Member
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Houston, TX - USA
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Vette(s): 1970 454 4 speed A/C power everything else
Do you know if the switches go bad............its still in the side cover, but I dont know how to test it.
Former Member
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Houston, TX - USA
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Vette(s): 1970 454 4 speed A/C power everything else
Also................are the shifter shafts the same as those that are in a side cover without the switch?
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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 switch is a simple closed/open type deal. It should show continuity with the shifter in 3rd or 4th, and open in the neutral position. 
(Later trans only operate the switch in 4th gear)
About the only thing I've ever seen go "bad" on them was the terminals on the outside getting broken off. They can "stick" sometimes, if the trans lube gets really gummy, but other than that, they're really pretty reliable. If it is just "sticky" it can be cleaned, usually, and then it will work
.
The shafts are different than the ones without the switch...
(Later trans only operate the switch in 4th gear)
About the only thing I've ever seen go "bad" on them was the terminals on the outside getting broken off. They can "stick" sometimes, if the trans lube gets really gummy, but other than that, they're really pretty reliable. If it is just "sticky" it can be cleaned, usually, and then it will work
.
The shafts are different than the ones without the switch...
Joel Adams
C3VR Lifetime Member #56
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Former Member
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Houston, TX - USA
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Vette(s): 1970 454 4 speed A/C power everything else
Thanks..............this one has a broken off terminal, so I guess it's no good... ; > )
Former Member
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Houston, TX - USA
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Hey Joel,
Im trying real hard to stump you, but so far I have been unable!
Do you know if the TCS switch on the side cover is a pin style or spade style................
Im trying real hard to stump you, but so far I have been unable!
Do you know if the TCS switch on the side cover is a pin style or spade style................
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
I believe that would refer to the style of terminals that the connector plugs into. Pin = round terminal( O ), and Spade = flat terminal ( I ).
Without actually seeing what you have, I couldn't say which style you have...
Without actually seeing what you have, I couldn't say which style you have...
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"
Former Member
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Houston, TX - USA
Joined: 2/7/2008
Posts: 93
Vette(s): 1970 454 4 speed A/C power everything else
I cant either, Its broken off...............I thought you might know which one it came with.............Im leaning towards the pin style
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
Even with it broken off, you should be able to tell what style it has by the shape of the wire connector.
It really won't matter...if you can get another switch, you can always change the connector to fit.
I will say, most of the ones I've seen have been the round, "Pin" type, but the later years did have the flat, "Spade" type.
It really won't matter...if you can get another switch, you can always change the connector to fit.
I will say, most of the ones I've seen have been the round, "Pin" type, but the later years did have the flat, "Spade" type.
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
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