How do you guys race your 4l60e autos?
07-30-2010, 10:04 AM
#21
10 Second Club
iTrader: (4)
Join Date: Feb 2004
Location: Marysville, WA
Posts: 9,448
Likes: 0
Received 0 Likes
on
0 Posts
I leave mine in 3rd because I set it up to top out going thru the traps. If I had to go into 4th (OD) I would probably lift because of the power I'm making now. But I did shift into 4th @ WOT with my 400rwhp cam only motor several times with no issues.
08-04-2010, 02:47 AM
#25
11 Second Club
iTrader: (8)
Join Date: Aug 2007
Location: Baytown, Texas
Posts: 804
Likes: 0
Received 0 Likes
on
0 Posts
I'm curious about trying this! But I don't get it, what's the purpose of having a "built" tranny that's supposed to shift at maximum performance if racing it in 3rd gear is better? I just want more info or experiences on this since I'm prepping my h/c/nitrous setup for drag racing. This thread was a good read for me.
08-04-2010, 11:15 AM
#26
7 Second Club
iTrader: (5)
Join Date: Nov 2001
Location: Gainesville, Florida # of drag strips runs: ?!?!?
Posts: 8,834
Likes: 0
Received 1 Like
on
1 Post
I used to leave mine in 3rd but every now and then it would whack the rev limiter on the 2-3 shift when going down the track. A member here told me about trying it in OD, and the problem hasn't happened in 7 years since then. Granted my car is only slightly modified, but just sharing my results.
BTW, my car did shift into overdrive at WOT on a high speed "check out" run when I first got it (bone stock with about 12,000 miles on it).
Derek
BTW, my car did shift into overdrive at WOT on a high speed "check out" run when I first got it (bone stock with about 12,000 miles on it).
Derek
08-04-2010, 12:12 PM
#28
I used to leave mine in 3rd but every now and then it would whack the rev limiter on the 2-3 shift when going down the track. A member here told me about trying it in OD, and the problem hasn't happened in 7 years since then. Granted my car is only slightly modified, but just sharing my results.
BTW, my car did shift into overdrive at WOT on a high speed "check out" run when I first got it (bone stock with about 12,000 miles on it).
Derek
BTW, my car did shift into overdrive at WOT on a high speed "check out" run when I first got it (bone stock with about 12,000 miles on it).
Derek
08-04-2010, 01:29 PM
#29
Staging Lane
iTrader: (5)
Join Date: Nov 2007
Location: maple valley, wa
Posts: 96
Likes: 0
Received 0 Likes
on
0 Posts
When you leave it in "D" the overruns will apply on the 2-3 shift. So you have another clutch coming on along with the 3-4's. This will take apply oil away from the 3-4 clutch pack, and send it to the overruns. Which is not the best thing. If you leave it in "OD" the overrun clutches don't apply, so no apply oil is going elsewhere, giving you the best WOT 2-3 shift.
08-04-2010, 09:56 PM
#30
When you leave it in "D" the overruns will apply on the 2-3 shift. So you have another clutch coming on along with the 3-4's. This will take apply oil away from the 3-4 clutch pack, and send it to the overruns. Which is not the best thing. If you leave it in "OD" the overrun clutches don't apply, so no apply oil is going elsewhere, giving you the best WOT 2-3 shift.
08-05-2010, 12:14 AM
#31
When you leave it in "D" the overruns will apply on the 2-3 shift. So you have another clutch coming on along with the 3-4's. This will take apply oil away from the 3-4 clutch pack, and send it to the overruns. Which is not the best thing. If you leave it in "OD" the overrun clutches don't apply, so no apply oil is going elsewhere, giving you the best WOT 2-3 shift.
Last edited by z28241; 08-12-2010 at 01:18 AM.
08-05-2010, 12:19 AM
#32
Yes, when racing in the qtr mile its best to gear your car so you run the end of the track in your 1:1 gear, I only mentioned being able to to shift into 4th at WOT because a couple members thought you couldn't, the reason you would want to. . . . . . . . . Highway runs and standing mile events.
08-05-2010, 05:48 AM
#33
7 Second Club
iTrader: (5)
Join Date: Nov 2001
Location: Gainesville, Florida # of drag strips runs: ?!?!?
Posts: 8,834
Likes: 0
Received 1 Like
on
1 Post
When you leave it in "D" the overruns will apply on the 2-3 shift. So you have another clutch coming on along with the 3-4's. This will take apply oil away from the 3-4 clutch pack, and send it to the overruns. Which is not the best thing. If you leave it in "OD" the overrun clutches don't apply, so no apply oil is going elsewhere, giving you the best WOT 2-3 shift.
Derek
08-05-2010, 05:42 PM
#36
Teching In
Join Date: Nov 2007
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
4l60e is computer controlled weather you shift manually or leave it in drive. when you roll race you should manually down shift it so the clutches are fully engaged and not trying to engage under power. When i race from a dig, track or street, i put it in first so if i spin and ease off the throttle it doesn't shift into the next gear early, as it would if you were in drive. if you shift early it will give the computer time to react and wont hit the rev limiter.
11-22-2010, 07:31 PM
#38
11 Second Club
iTrader: (28)
Join Date: Jul 2004
Location: FL
Posts: 398
Likes: 0
Received 0 Likes
on
0 Posts
I leave mine in 3. Heard about the extra "something" engaged when you leave it like that. I forget all the details. Probably the same thing that was typed a few posts above.
