Should i do a 4L80 swap?

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11-07-2007 | 05:32 PM

#11

KevinF56

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From: North of Boston

Quote:

Originally Posted by Dirty Dave

How will the 4l80 give him 2-3 more mph in the 1/4. Its heavier it has a higher 1st gear and it has significantly more parasitic power loss. I personally would stick with the 4l60 as long as possible.

the second and third gears i believe are better than a 60e, thus resulting in higher trap speeds.

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11-07-2007 | 06:04 PM

#12

Mangled03gmc

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From: In a van DOWN BY THE RIVER

Quote:

Originally Posted by KevinF56

ask yourself this: do you plan on putting more power in your truck in the future? built 65e's can take 500rwhp. anything after that i'd do a 80e. if your mods stay the same you would be fine with a built 65e. if you plan for HP levels over 500 or so rwhp, buy the 80e.

I agree,

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11-07-2007 | 07:21 PM

#13

Dirty Dave

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From: kansas

Quote:

Originally Posted by KevinF56

the second and third gears i believe are better than a 60e, thus resulting in higher trap speeds.

Third in both trannys is 1-1. Second in the 60 is 1.62-1 the 80 is 1.48-1 I really think the second in the 60 is faster. The only way the 80 is faster is if the higher 1st gear keeps you from blowing the tires on the line IMO.
Turbo 4L60E 3.06 1.62 1.00 0.70
Turbo 4L80E 2.48 1.48 1.00 0.75

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11-07-2007 | 08:00 PM

#14

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Quote:

Originally Posted by Dirty Dave

The 4L80e has a tighter ratio between gears.. When it shifts from 1-2, RPM's only fall to 4700-4800rpm keeping the engine in its powerband. I can do about 62-63mph in first and 101-102 in second with a 63-6400 shift point. With the same combo, my 60e shifted out second at about 90mph. When it went into 3rd, it felt like i hit the brakes. lol

And the fall from 1-2 and 2-3 absolutely sucks in the 60!!

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11-07-2007 | 08:37 PM

#15

quicksilverado

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From: Marietta, Ga.

A stock 80e will handle more power than all but the very best built 60e.

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11-07-2007 | 08:39 PM

#16

quicksilverado

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From: Marietta, Ga.

Quote:

Originally Posted by Dirty Dave

Swap to an 80e and you will understand, especially since you have a turbo.

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11-08-2007 | 06:39 PM

#17

silveradol33

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From: Muskegon, MI

Quote:

Originally Posted by quicksilverado

Swap to an 80e and you will understand, especially since you have a turbo.

Turbo, did I miss somthing? LOL,

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11-09-2007 | 02:31 PM

#18

TexasSuperChevy

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From: Edinburg, Texas

well i might get a TNT F1 nitrous system. I do have 4.11's and with my 2800 stall i have been cuttin like 1.8 60'. I have 28" toyos on stock wheels. they hook up well at our local track, but i have been wanting to get a bigger stall.

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