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12-12-2004, 06:04 PM
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#1 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Anybody know what this switch is?
In the wiring schematics for our V8 trucks I see a label for "TRANS CONT SPARK TEMP SW" in front of the passenger side head. It is labeled Dark Green wire which I found unhooked. What does that switch do and where is it located?
__________________
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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12-12-2004, 06:21 PM
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#2 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
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im pretty sure that is old emissions crap that wouldnt have any effect on your hei and new carb anyways
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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12-12-2004, 06:44 PM
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#3 |
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Account Suspended
Join Date: Apr 2004
Location: N.C. high country
Posts: 6,107
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That switch retards the timing upon engine and transmission temp. It holds the timing back until the switch opens. You are better off without it. My 70 sb had it and my 70 2wd blazer also. Not any more
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12-12-2004, 06:46 PM
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#4 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
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i dont remember if it is or not but i imagine your hei is wired how it should be to a 12 volt hot key on if so its bypassed anyways even if the switch was hooked up
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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12-12-2004, 06:56 PM
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#5 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Thanks guys. I found this wire on my dads truck today. I was looking for the dark green wire to hook up his temp gauge and came across this one. I find something new everyday with these trucks!
__________________
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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12-13-2004, 02:47 AM
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#6 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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TCS is transmission controlled spark. It eliminates the vacuum advance in all gears except high. That switch eliminates the TCS when the motor is cold.
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12-13-2004, 08:24 AM
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#7 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Just curious- where is the switch actually located?
__________________
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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12-13-2004, 08:50 AM
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#8 |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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I just installed a new 383 in my truck. I put a new Edelbrock 1406 on it. I used that wire for the +12 volts to my new carb.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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12-13-2004, 09:37 AM
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#9 |
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Registered User
Join Date: Aug 2002
Location: Newport News, VA
Posts: 190
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Tcs
TCS is actually located on the transmission....has a male lead on the switch itself (to attach the green wire) and other end of switch is threaded into the transmission. On the end of the switch threaded into the transmission, is a ball/plunger setup that is activated by internal transmission workings..
Hope this helps.. |
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