Kickdown question for th350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Senator350 · 01-11-2009, 02:20 PM

right... So, I have a vacuum line going to my tranny.
does that eliminate the need for a kickdown cable (for WOT and such?)

I eliminated every other vacuum draw (brakes, dizzy, etc)... so all of my vacuum is going to my tranny now, but I wonder what to expect when I'm shaking out the bugs in the coming months.

before it hits a track.. that's for sure

Cyclone · 01-11-2009, 02:21 PM

You need a cable for proper kickdown, and vacum is a must for proper shifting.

Senator350 · 01-11-2009, 02:38 PM

Thanks! The set up I'm taking off has a cable, but i don't like where it's set to. It always kicked down a fraction of a second too late for my taste. I think I have a good excuse to put a nice plate/bracket assembly between my carb and intake... maybe I'll even double the plates and throw one on the passenger side for a regulator... which should give me a little happier low end for getting all this truck moving!

hoping to get the real power from this engine to the ground, especially now that I have the right sized carb and a better ignition. The TH350 feels SUPER tight, but I don't think anything on this truck has been dialed in in a LONGGG time.

Longhorn Man · 01-11-2009, 03:00 PM

the modulator controls the upshift points with other items assisting in that decision.
The kickdown downshifts it when you floor it, and it also is one of the factors that 'over ride' the upshifting, holding it in first or second longer.

01-11-2009, 02:20 PM	#1
Senator350 Registered User Join Date: Feb 2004 Location: Albany, NY Posts: 522	Kickdown question for th350 right... So, I have a vacuum line going to my tranny. does that eliminate the need for a kickdown cable (for WOT and such?) I eliminated every other vacuum draw (brakes, dizzy, etc)... so all of my vacuum is going to my tranny now, but I wonder what to expect when I'm shaking out the bugs in the coming months. before it hits a track.. that's for sure __________________ RN U OVR Last edited by Senator350; 01-11-2009 at 02:20 PM.

01-11-2009, 02:21 PM	#2
Cyclone Registered User Join Date: Oct 2004 Location: Sonoma, CA Posts: 318	Re: Kickdown question for th350 You need a cable for proper kickdown, and vacum is a must for proper shifting.

01-11-2009, 02:38 PM	#3
Senator350 Registered User Join Date: Feb 2004 Location: Albany, NY Posts: 522	Re: Kickdown question for th350 Thanks! The set up I'm taking off has a cable, but i don't like where it's set to. It always kicked down a fraction of a second too late for my taste. I think I have a good excuse to put a nice plate/bracket assembly between my carb and intake... maybe I'll even double the plates and throw one on the passenger side for a regulator... which should give me a little happier low end for getting all this truck moving! hoping to get the real power from this engine to the ground, especially now that I have the right sized carb and a better ignition. The TH350 feels SUPER tight, but I don't think anything on this truck has been dialed in in a LONGGG time. __________________ RN U OVR Last edited by Senator350; 01-11-2009 at 02:40 PM.

01-11-2009, 03:00 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Kickdown question for th350 the modulator controls the upshift points with other items assisting in that decision. The kickdown downshifts it when you floor it, and it also is one of the factors that 'over ride' the upshifting, holding it in first or second longer.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.