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Print in friendly format Send this term to a friend  4L80E
Automatic Transmission - 4 Speed

1st Gear: 2.43
2nd Gear: 1.49
3rd Gear: 1.00
4th Gear: 0.75

Reverse: 2.07

- Used in production GM models...
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Re: Driving Impressions today

Subject: Re: Driving Impressions today
by dan0617 on 2008/12/8 1:24:35

You know me, the budget minded solution finder. Here is a few ideas for you that have worked like a charm for me.


1. Unbolt the front sway bar. It will let the front end lift, transferring weight to the rear wheels quicker. Does worlds of good at the track, helps a decent amount on the street when hitting WOT from a roll. Kind of gives the effect of softer front shocks which I like the feel of. You might too. If you run it a while this way and decide you like it, you can remove the sway bar completely to take out some weight from the front of the car.

2. Have the rear aligned with about 1/2 to 3/4 of a degree of postitive camber with the gas tank full. When you nail it, the rear squats. The tires are normally flat, then when it squats the tires are no longer flat on the road surface. With the positive camber, the tires will be flat when the rear squats. This will wear the tires unevenly during normal driving but if you only drive 1 or 2 thousand miles a year or so, you will never notice.

3. Keep the gas tank full all the time.

4. Drag radials or ET streets on the back. I run Nitto 555R's (275/40/17) at 22 lbs. I should have bought 315's since I know I'll need more traction with my new engine too. No experience with the ET streets but I heard they are even better than the Nittos.

5. Might want to put some QA1 adjustable shocks on it, front and rear, but I'd try 1 thru 4 first since the qa1's are so expensive.

Anytime the outside temp is less than about 45 degrees I can't get my car to dead hook on launch, but once it is above that she dead hooks. Not saying yours will dead hook, just saying that I notice a big difference in traction when the temps are cold. Also the little bit of salt dust that is on the roads in this area this time of year is a huge traction killer.

You may also have to adjust the driving style some. It is possible that you are making so much torque and your converter is putting you right in that torque so that you cannot nail it to the floor unless you did a big smoky burnout to heat the tires first. If that is the case, you might have to get in the habit of rolling into the gas no matter what speed you are going. That is what I'd do till you get the "problem" solved.
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