TH400 shifting compared to TH350??
#1
TECH Enthusiast
Thread Starter
iTrader: (13)
Join Date: Nov 2001
Location: Chattanooga,TN
Posts: 607
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
How is the shifting of a 350 compared to a 400? My 400 takes about 700rpm to shift. I am talking about having my shift light set at 6400 rpms to keep from hitting a 7200rpm rev limit before the shift. Is a 350 the same way or does it shift quicker?
I went with the 400 for the strength, but I feel like I am losing some ET from the lagging shift, not to mention the inconsistency. I mean the first time I ran the 1/4 I ended up letting out in 3rd at 6400 because my shift light came on.
With a built to the hilt 350, could it hold up to a 3800lb car with 600ft lbs (DynoJet) of torque?
I went with the 400 for the strength, but I feel like I am losing some ET from the lagging shift, not to mention the inconsistency. I mean the first time I ran the 1/4 I ended up letting out in 3rd at 6400 because my shift light came on.
With a built to the hilt 350, could it hold up to a 3800lb car with 600ft lbs (DynoJet) of torque?
#2
Tech Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Silver Slayer
How is the shifting of a 350 compared to a 400? My 400 takes about 700rpm to shift. I am talking about having my shift light set at 6400 rpms to keep from hitting a 7200rpm rev limit before the shift. Is a 350 the same way or does it shift quicker?
I went with the 400 for the strength, but I feel like I am losing some ET from the lagging shift, not to mention the inconsistency. I mean the first time I ran the 1/4 I ended up letting out in 3rd at 6400 because my shift light came on.
With a built to the hilt 350, could it hold up to a 3800lb car with 600ft lbs (DynoJet) of torque?
I went with the 400 for the strength, but I feel like I am losing some ET from the lagging shift, not to mention the inconsistency. I mean the first time I ran the 1/4 I ended up letting out in 3rd at 6400 because my shift light came on.
With a built to the hilt 350, could it hold up to a 3800lb car with 600ft lbs (DynoJet) of torque?
Trending Topics
#8
TECH Enthusiast
Join Date: Jul 2006
Location: San Diego
Posts: 638
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Something wrong. The shift time for a TH400 compared to a TH350 should be identical, and by identical I mean both should have shift times in the 20-30 milisecond range. My manual valve TH400 shifts absolutely instantaneously.
#10
TECH Enthusiast
Thread Starter
iTrader: (13)
Join Date: Nov 2001
Location: Chattanooga,TN
Posts: 607
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I guess I should add that I am used to a M6, when you pull the shifter back it is there. It just seems like it takes too long from the time I pull the shifter back until the time it actually shifts into gear.
It only feels like this when I am at WOT. When I am just cruising around, it does seem pretty quick.
It only feels like this when I am at WOT. When I am just cruising around, it does seem pretty quick.
#16
10 Second Club
iTrader: (5)
Join Date: Nov 2001
Location: Cali/Bay Area
Posts: 3,412
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by GOaT Cheese
Something wrong. The shift time for a TH400 compared to a TH350 should be identical, and by identical I mean both should have shift times in the 20-30 milisecond range. My manual valve TH400 shifts absolutely instantaneously.
#17
9 Second Club
iTrader: (2)
Join Date: Nov 2004
Location: Amarillo,TX
Posts: 1,205
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Silver Slayer
I guess I should add that I am used to a M6, when you pull the shifter back it is there. It just seems like it takes too long from the time I pull the shifter back until the time it actually shifts into gear.
It only feels like this when I am at WOT. When I am just cruising around, it does seem pretty quick.
It only feels like this when I am at WOT. When I am just cruising around, it does seem pretty quick.
#19
TECH Enthusiast
Thread Starter
iTrader: (13)
Join Date: Nov 2001
Location: Chattanooga,TN
Posts: 607
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
This is something that has happened since it was installed. It was built using racing clutches and all the good stuff inside by a reputable builder (local)
I am going to try this weekend to check the line pressure and try launching off the foot brake and see if it makes any difference.
It only seems to be lagging at WOT, when I am just cruising around, 2nd shifts instantly, 3rd does not seem as quick, but then again it is a 4400 stall.
I am going to try this weekend to check the line pressure and try launching off the foot brake and see if it makes any difference.
It only seems to be lagging at WOT, when I am just cruising around, 2nd shifts instantly, 3rd does not seem as quick, but then again it is a 4400 stall.