My 3-4 WOT shift observation
Thread Starter
Safety Car
Joined: Dec 2004
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From: Poop land
My 3-4 WOT shift observation
I see some people are concerned about thinking 3rd gear won't ever shift to OD, even if you are taching the 5500 rpm redline. First off, it will take a while to get to 136 mph if you are 100% stock. Secondly, it will only shift to 4 on WOT if your car originally came with the 3.07s. If a person had 2.59s and slapped on 3.07s, that may be the reason that the 3-4 wasn't shifting because in a 2.59 car, you'd reach the top speed on 3rd gear, 155 mph @ 5300 rpms. Even if you could push it faster way past 5500 rpms, it still wouldn't shift because the OD + 2.59 gear makes the next gear out of the power band. I'm glad my Vette finally shifted to OD without letting go of the throttle after passing 136 mph. Each time I went faster than 136 mph, I'd have to let go of the throttle for it to shift to OD because I was afraid of seeing 5500 rpms for more than a couple seconds. Yes, it will seem like your car is pegged at redline for awhile but if your car had 3.07s from the factory, it should shift. God that was fun but I still had to test and see if I indeed have my 3-4 shift at WOT.
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by k0rv3tt389
Even if you could push it faster way past 5500 rpms, it still wouldn't shift because the OD + 2.59 gear makes the next gear out of the power band.
RACE ON!!!
Le Mans Master
Joined: Jan 2002
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From: Jenison MI
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St. Jude Donor '06
when mine had 2.59's it would shift to 4th at WOT. I'm thinking you need to do some more research. As for what CFI-EFI said - 
Next.....
Next.....
Drifting
Joined: May 2004
Posts: 1,747
Likes: 1
From: Port McNicoll Ontario
Is this speed accurate?
Do you need to be doing 135 plus mph to get the shift into 4th?
I have 3.07s and my car seems to run out of steam or out of road before it will shift (about 130 mph). If i back off on the throttle it will shift right away.
Do you need to be doing 135 plus mph to get the shift into 4th?
I have 3.07s and my car seems to run out of steam or out of road before it will shift (about 130 mph). If i back off on the throttle it will shift right away.
Thread Starter
Safety Car
Joined: Dec 2004
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From: Poop land
I would think that stock 2.59 cars top out in 3rd, right?? So if you take your foot of the gas, THEN you'd shift to OD and hope to have enough power to pull OD + a 2.59 gear. Looks like 3.07 cars use all of their gears with the the L98s stock power to the top speed. Just the 3-4th shift will take awhile. Now if only I can take my car to 195 mph @ 5500 rpms...
Le Mans Master
Joined: Jan 2002
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From: Jenison MI
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
Originally Posted by k0rv3tt389
I would think that stock 2.59 cars top out in 3rd, right?? So if you take your foot of the gas, THEN you'd shift to OD and hope to have enough power to pull OD + a 2.59 gear. Looks like 3.07 cars use all of their gears with the the L98s stock power to the top speed. Just the 3-4th shift will take awhile. Now if only I can take my car to 195 mph @ 5500 rpms...
Mine would pull 4th all the way over 150 without a problem. Now with the 3.73's if left in OD she will shift into 4th at 85mph and pull it to 140.
Again, same trans as it had in it with the 2.59's. Shifts at WOT just fine. But if I put her in D she will pull 3rd to about 115 then I shift it to 4th and she will run to 140.
When I drag, I run her in 3rd (D) and she runs 12.4's at 114mph.
It has never had a problem pulling 4th in or out of stock form.
Not sure where you are getting your info, but it's wrong.
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Former Vendor
Joined: Jun 2001
Posts: 7,204
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From: St Marys PA
knock yourself out:
Code:
Transmission Ratios: 1st: 3.06 2nd: 1.63 3rd: 1 4th: 0.7 Tire Diameter 1: 26 inches Rear Gear Ratio 1: 3.07:1 MPH RPM 1st 2nd 3rd 4th 5th 6th 1000 8 15 24 35 0 0 1500 12 22 36 52 0 0 2000 16 30 48 69 0 0 2500 20 37 60 86 0 0 3000 24 45 73 104 0 0 3500 28 52 85 121 0 0 4000 32 59 97 138 0 0 4500 36 67 109 155 0 0 5000 40 74 121 173 0 0 5500 43 82 133 190 0 0 6000 47 89 145 207 0 0 6500 51 96 157 225 0 0 7000 55 104 169 242 0 0 7500 59 111 181 259 0 0 8000 63 119 194 276 0 0 Tire Diameter 2: 26 inches Rear Gear Ratio 2: 2.59:1 MPH RPM 1st 2nd 3rd 4th 5th 6th 1000 9 18 29 41 0 0 1500 14 26 43 61 0 0 2000 19 35 57 82 0 0 2500 23 44 72 102 0 0 3000 28 53 86 123 0 0 3500 33 62 100 143 0 0 4000 37 70 115 164 0 0 4500 42 79 129 184 0 0 5000 47 88 143 205 0 0 5500 52 97 158 225 0 0 6000 56 106 172 246 0 0 6500 61 114 186 266 0 0 7000 66 123 201 287 0 0 7500 70 132 215 307 0 0 8000 75 141 229 328 0 0
Drifting
Joined: May 2004
Posts: 1,747
Likes: 1
From: Port McNicoll Ontario
Originally Posted by nxs055
it is scarry to get it to shift to 4th though, cuz it hangs at redline for what feels like forever
I don't wait that couple of extra seconds for it to shift.
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by nxs055
mine shifts to 4th at 132.
thats with stock 3.07's in an 89....
it is scarry to get it to shift to 4th though, cuz it hangs at redline for what feels like forever
thats with stock 3.07's in an 89....
it is scarry to get it to shift to 4th though, cuz it hangs at redline for what feels like forever
(3.45 gears)
