redline question
Freshman User
Joined: Oct 2009
Posts: 28
Likes: 1
From: westland, mi
im sure someone else has a more useful answer.
Hotshot
Joined: Sep 2010
Posts: 10,459
Likes: 10
From: RVA
I may be out of line here, but I am curious to know why you need to know the redline of your 4.6 if you have no idea how many RPMs you're turning?
Let's just say it's 6,000 for hypothetical purposes. How would you know whether you're turning 2k or 4k RPMs or 6k for that matter?
Let's just say it's 6,000 for hypothetical purposes. How would you know whether you're turning 2k or 4k RPMs or 6k for that matter?
Posting Guru
Joined: Nov 2009
Posts: 2,016
Likes: 3
From: NC
On most of the dyno sheets I've seen, the power typically drops off at 5000 RPM.
The torque converter will likely start to crap out/balloon at 5400 RPM.
The factory redline should be around 5500.
Your WOT shift points should be 300-400 below the redline - 5000-5100.
Make sense?
The torque converter will likely start to crap out/balloon at 5400 RPM.
The factory redline should be around 5500.
Your WOT shift points should be 300-400 below the redline - 5000-5100.
Make sense?
Thread Starter
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Postmaster
Joined: Jun 2003
Posts: 3,310
Likes: 0
From: Lufkin
@ shotgun
Thanks for the reply...helped me a lot.
@ MCDavis
not out of line at all man -- I just bought an EDGE Tuner and was programming shift points because I wanted to test a 1/4 mile run with it. Also, it has a digital tach, so now I can see me RPM's.
@ BNInc
I have 3.55's, but I guess already got my answer from Shotgun. I am looking to upgrade to 4.10 gears with a Ford no-slip diff...see I used to have a 4.2 (hence the name) and I put those gears in it and it made an incredible difference in acceleration.
Anyhow thanks for the help
Joey
Thanks for the reply...helped me a lot.
@ MCDavis
not out of line at all man -- I just bought an EDGE Tuner and was programming shift points because I wanted to test a 1/4 mile run with it. Also, it has a digital tach, so now I can see me RPM's.
@ BNInc
I have 3.55's, but I guess already got my answer from Shotgun. I am looking to upgrade to 4.10 gears with a Ford no-slip diff...see I used to have a 4.2 (hence the name) and I put those gears in it and it made an incredible difference in acceleration.
Anyhow thanks for the help
Joey
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