Tpi Vss
Thread Starter
Racer
Joined: Oct 2004
Posts: 439
Likes: 0
From: Mukilteo Washington
Tpi Vss
I need to get a VSS for my 77 (90-91 TPI) TH350, I was looking at this one-
http://cgi.ebay.com/ebaymotors/90-92...ayphotohosting
I'm confused at how these work because of different gear ratios in the rear end and transmissions of different type cars, also wouldn't tire size be a factor? I have a 336 rear with 25 1/2" rear tires. Thanks
http://cgi.ebay.com/ebaymotors/90-92...ayphotohosting
I'm confused at how these work because of different gear ratios in the rear end and transmissions of different type cars, also wouldn't tire size be a factor? I have a 336 rear with 25 1/2" rear tires. Thanks
Limping across the line
Joined: Oct 2002
Posts: 5,299
Likes: 109
From: Peoria Az
Give Fuel Injection Specialists a call they are in Texas and are very helpful. They have a pretty god website toohttp://www.fuelinjection.com/
Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
Are you going to be running an electronic speedometer in your 77? If not, the only real function your VSS will perform is to help your ECU differentiate between idle, car-at-rest and idle, car-coasting. These two states have different requirements and the VSS signal is there only to keep your engine from stalling. The quantity of signal (i.e VSS "reading" 30 mph when vehicle is going 50 OR 20 mph is not important). Please go the JAGS THAT RUN website and get the TPI swap manual - its good reference.
Melting Slicks
Joined: Aug 2004
Posts: 2,907
Likes: 229
From: Oakbank Manitoba
That is the correct VSS for your application. You first need to deal with getting the correct combination for the speedo to work correctly with your rear tire and gear selection. If you are using the stock gears and tire size then just hook up the VSS to the tranny then the speedo cable to the VSS. We can advise you on which driven and drive gears to buy to make your speedo accurate if you have changed gear ratio or tire size. There is a great calculator available for that online if you search.
Thread Starter
Racer
Joined: Oct 2004
Posts: 439
Likes: 0
From: Mukilteo Washington
Give Fuel Injection Specialists a call they are in Texas and are very helpful. They have a pretty god website toohttp://www.fuelinjection.com/
Last edited by 77 vette; Oct 24, 2007 at 04:50 AM.
Thread Starter
Racer
Joined: Oct 2004
Posts: 439
Likes: 0
From: Mukilteo Washington
Are you going to be running an electronic speedometer in your 77? If not, the only real function your VSS will perform is to help your ECU differentiate between idle, car-at-rest and idle, car-coasting. These two states have different requirements and the VSS signal is there only to keep your engine from stalling. The quantity of signal (i.e VSS "reading" 30 mph when vehicle is going 50 OR 20 mph is not important). Please go the JAGS THAT RUN website and get the TPI swap manual - its good reference.
No
That makes sense. I had that book untill I left it laying around. The Wife has a 2 day laying around period until it gets dumped in the trash and She's **** about this (Well not **** but you understand what I mean) and I'm a cheap bastard that hates spending money on something that's already bought
Last edited by 77 vette; Oct 24, 2007 at 04:48 AM.
Thread Starter
Racer
Joined: Oct 2004
Posts: 439
Likes: 0
From: Mukilteo Washington
That is the correct VSS for your application. You first need to deal with getting the correct combination for the speedo to work correctly with your rear tire and gear selection. If you are using the stock gears and tire size then just hook up the VSS to the tranny then the speedo cable to the VSS. We can advise you on which driven and drive gears to buy to make your speedo accurate if you have changed gear ratio or tire size. There is a great calculator available for that online if you search.
