Question about Detent Cable - The 1947 - Present Chevrolet & GMC Truck Message Board Network

crawdad · 05-28-2005, 11:09 PM

In a continuing quest to "de-hotrod" the truck I took off the hands of my nephew, I have discovered there is no passing gear. According to the numbers, this truck came with a 305 engine with a TH400 transmission. The 305 was replaced with a 350 engine, and the TH400 was replaced with a TH350. I believe the TH400 had an electric passing gear, but I think the TH350 uses a detent cable. Am I right on this? There is no cable on this truck, so if this is so, then can I simply connect a detent cable from the carb to the trans to fix this problem? Is there any compatability issues I need to be aware of?

Thanks for any advice folks.

NeCrOmAnCeR · 05-28-2005, 11:20 PM

Yes, the TH350 uses a cable, and they are fairly cheap. The only concern is if you have the correct bracket up by the carb to connect the cable-end and sleeve.

crawdad · 05-28-2005, 11:31 PM

Could you expound on that bracket a little more? Does it mount to the manifold or to the carb? Is it still available from Chevy dealers or do you know where I might find one? Better yet, does anyone have a picture of the bracket? For all I know it might already be on the truck.

NeCrOmAnCeR · 05-28-2005, 11:59 PM

The one on mine bolts to the back two carb bolts, hangs off to the drivers side of the carb and has the square hole for the kick-down cable to runthrough, as well as the throttle cable and return spring. Sorry, don't have any pics.

jermasaurus · 05-29-2005, 01:49 AM

you should be able to get a universal one. companies that make chrome dress up kits, chrome dipsticks, they should make a bracket that bolts to the carb or intake. Do you have Pep Boys, or Murrays or Autozone near you? Their products aren't the best, but they carry a lot of that chrome stuff. Hope this pic works.

76bonanza · 05-29-2005, 07:39 AM

mine mounts to intake on back behind carb

crawdad · 05-29-2005, 11:29 AM

I went out and checked again, and there is a bracket. In fact, there's two brackets. One is mounted to the two rear bolts holding down the carb as NeCrOmAnCeR said, and the other is a chrome one that is mounted further to the drivers side on the manifold. While poking around back there, lo and behold, I found the cable laying down on the trans up near the firewall! I pulled it out but I can't figure out which bracket to put it on. The chrome one sits further to the drivers side than the other, which is up pretty close to the carb. Also, I don't see any way to mount the cable to the carb. There doesn't seem to be any attaching point. It's times like these that I'd give anything for a digital camera. If anyone has a picture (a good detailed one) of the intake/carb area with the accelerator and detent cable hook up, I sure would appreciate it. Any other help greatly appreciated.

05-28-2005, 11:09 PM	#1
crawdad Senior Member Join Date: Sep 2004 Location: Georgia Posts: 614	Question about Detent Cable In a continuing quest to "de-hotrod" the truck I took off the hands of my nephew, I have discovered there is no passing gear. According to the numbers, this truck came with a 305 engine with a TH400 transmission. The 305 was replaced with a 350 engine, and the TH400 was replaced with a TH350. I believe the TH400 had an electric passing gear, but I think the TH350 uses a detent cable. Am I right on this? There is no cable on this truck, so if this is so, then can I simply connect a detent cable from the carb to the trans to fix this problem? Is there any compatability issues I need to be aware of? Thanks for any advice folks. __________________ 2012 Silverado LT 1500, 5.3, 6 speed auto '86 SWB C-10 Silverado

05-28-2005, 11:31 PM	#3
crawdad Senior Member Join Date: Sep 2004 Location: Georgia Posts: 614	Could you expound on that bracket a little more? Does it mount to the manifold or to the carb? Is it still available from Chevy dealers or do you know where I might find one? Better yet, does anyone have a picture of the bracket? For all I know it might already be on the truck. __________________ 2012 Silverado LT 1500, 5.3, 6 speed auto '86 SWB C-10 Silverado

05-29-2005, 01:49 AM	#5
jermasaurus Registered User Join Date: Dec 2004 Location: New Lenox, IL Posts: 442	you should be able to get a universal one. companies that make chrome dress up kits, chrome dipsticks, they should make a bracket that bolts to the carb or intake. Do you have Pep Boys, or Murrays or Autozone near you? Their products aren't the best, but they carry a lot of that chrome stuff. Hope this pic works. Attached Images

05-29-2005, 07:39 AM	#6
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	mine mounts to intake on back behind carb __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO

05-29-2005, 11:29 AM	#7
crawdad Senior Member Join Date: Sep 2004 Location: Georgia Posts: 614	I went out and checked again, and there is a bracket. In fact, there's two brackets. One is mounted to the two rear bolts holding down the carb as NeCrOmAnCeR said, and the other is a chrome one that is mounted further to the drivers side on the manifold. While poking around back there, lo and behold, I found the cable laying down on the trans up near the firewall! I pulled it out but I can't figure out which bracket to put it on. The chrome one sits further to the drivers side than the other, which is up pretty close to the carb. Also, I don't see any way to mount the cable to the carb. There doesn't seem to be any attaching point. It's times like these that I'd give anything for a digital camera. If anyone has a picture (a good detailed one) of the intake/carb area with the accelerator and detent cable hook up, I sure would appreciate it. Any other help greatly appreciated. __________________ 2012 Silverado LT 1500, 5.3, 6 speed auto '86 SWB C-10 Silverado

05-28-2005, 11:20 PM	#2
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	Yes, the TH350 uses a cable, and they are fairly cheap. The only concern is if you have the correct bracket up by the carb to connect the cable-end and sleeve.

05-28-2005, 11:59 PM	#4
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	The one on mine bolts to the back two carb bolts, hangs off to the drivers side of the carb and has the square hole for the kick-down cable to runthrough, as well as the throttle cable and return spring. Sorry, don't have any pics.



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