Holley Sniper with an automatic transmission
- Thread starter Super 8
- Start date
- City
- Richmond
- State
- TX
I know this is splitting hairs, but the TF999 does not have a kickdown linkage. It (like all Chrysler transmissions) uses a throttle valve lever. The linkage in question moves the throttle valve a proportional amount as throttle is increased until it has reached the full open position. This valve then increases the line pressure in the transmission causing the shift timing to change and affects the governor application (as well as increases the clamping force on the clutch packs). Proper throttle valve actuation is imperative as too much pressure can burn up the clutches and too little pressure can also burn up the clutches.
Can you post a picture of the linkage?
Thank you for the information. I need all the education on these transmissions I can get! I've had mostly manual transmissions or swapped GM drivetrains in my Jeeps. I really appreciate it.
I can - give me a couple days - i just followed the workshop manual instructions and the auto transmission guides
Hi Mancunian. Just ordered the Sniper. Any chance you were able to get any pictures of the linkage? Thanks!
Sorry failed last week and at lake for long weekend - 
here's the next best thing for now - (how i set mine up )
Below from https://oljeep.com/edge_small.html
here's the next best thing for now - (how i set mine up )Below from https://oljeep.com/edge_small.html
Got more hoses in the way of mine than ag4ever
Couple thoughts=
The Sniper does not connect to the linkage for the TF999 - it just connects to the vanilla throttle cable, as long as you have a functioning throttle and TF999 then the Sniper should not affect the auto at all.
Mines a RHD too - although i can't imagine that would make a difference.
I connected the O2 sensor to the same point as the pulse line exits - ground off the pulse tube and welded a O2 socket. You can see that in the second pic.
What are you doing with all the emissions stuff? I kept the vapour canister and associated hoses but eliminated the pulse lines. I also installed a cat, figured the Sniper would keep it happy.
Couple thoughts=
The Sniper does not connect to the linkage for the TF999 - it just connects to the vanilla throttle cable, as long as you have a functioning throttle and TF999 then the Sniper should not affect the auto at all.
Mines a RHD too - although i can't imagine that would make a difference.
I connected the O2 sensor to the same point as the pulse line exits - ground off the pulse tube and welded a O2 socket. You can see that in the second pic.
What are you doing with all the emissions stuff? I kept the vapour canister and associated hoses but eliminated the pulse lines. I also installed a cat, figured the Sniper would keep it happy.
Oh - and follow the directions in the manual to set the linkage - they are a little counterintuitive - words clamp and rod seemed mixed to me - but i figured it out in the end. Again if it works now you should not have to mess with it just b/c of the Sniper.
Thank you. I owe you one!