I'm about to load an SBC into an 86 Z28 and need to identify / find the proper 700R4 Throttle Valve cable ( kickdown or detent cable to some folks.) I've searched and read too many posts then I should have and never really found the answers I was looking for. I'm posting this to relay what I know and to find out what I need to know.
I need to find a CARB TV cable for a 700R4.
check out this pic: The circled area shows that the transmission end of the cable is pulled inside the housing. This is how all the cables were pulled when I took measurements. (Please keep in mind that the cables are not perfectly straight and your measurement might be 'off' compared to mine a 1/16th or so.)
Here is a picture showing several different TV cables. I have previously Identified all these cables with the exception of 1 of them. ( I think the unidentified cable at the top might be the carb version !?!)
Top-to-bottom they are :
A: Cable end = 6" = UNKNOWN, V8? Carb?
B: Cable end = 5 3/4" = Crossfire
C: Cable end = 7 3/4" = TBI
D: Cable end = 6 1/2" = TPI
E: Cable end = 5" = V6 ( MPFI ? )
That simple comparison makes it hard for me to believe that a carb and a TBI cable are compatible parts - something I've read over and over again in previous posts. Take a look at this pic: This is where I placed the tape measure and measured each cable to the tip to get the measurements above.
Take a look at this pic: This is where I began the measurements for the overall cable length. (I pulled the cable as tight as possible for the most accurate readings possible....)
This is where I ended the measurement at the other end of the cable:
A: Overall = 37", Cable end = 6" = UNKNOWN, V8? Carb?
B: Overall = 31 3/4", Cable end = 5 3/4" = Crossfire
C: Overall = 35 1/8", Cable end = 7 3/4" = TBI
D: Overall = 43 3/4", Cable end = 6 1/2" = TPI
E: Overall = 39 3/4", Cable end = 5" = V6 ( MPFI ? ) Does anyone have access to a KNOWN carb V8 TV cable that could provide some measurements ?? I'd REALLY prefer to install the proper cable before the engine/tranny get lowered into the engine bay.
The only other TV Cable I'm not sure about yet would be a V6 Carb TV cable.......