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4l80e and gearing question

Old Jan 20, 2012 | 02:48 PM
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Default 4l80e and gearing question

Looking to do a 4l80e swap in my 02 ecsb. It has a 5.3, tr224 cam, LTs, Tb stall, 4:56 gears and a 28" tall tire. I know that the first gear in the 80e is a little taller so the 4:56s should help that out a little, but whats the overdrive like in the 80e? It already tachs 3000rpm at 70, I really dont want to tach any higher than that. Also, what converter should I go with? I was thinking 3200-3600. It's mostly a toy and wont see a lot of DD so im not to worried about driveability, other than turning 3k on the highway. Im going to be adding a tru-trac to help with traction so while im in there i can change gears if need be. Firts gear is almost use less with only a one tire fire and 4:56s
Anyone know of shops in the DFW area that will do an 80e swap? Living in an apartment, going to school, and working full time I dont have the time or the place to tackle it myself.
Thanks for any help
P.S. I did search but didnt find what I wanted.
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Old Jan 20, 2012 | 06:16 PM
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I believe the 80E has a .75 overdrive. Plug it in: Engine RPM Calculator
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Old Jan 20, 2012 | 08:30 PM
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Dude get rid of the 4:56's with a 28" tire.. thats whats killing your cruise rpm..
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Old Jan 20, 2012 | 10:13 PM
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Originally Posted by Beatdown Z
I believe the 80E has a .75 overdrive. Plug it in: Engine RPM Calculator
Thanks man

Originally Posted by 01silvy
Dude get rid of the 4:56's with a 28" tire.. thats whats killing your cruise rpm..
Haha yeah I know that. I'm going to lift it up a little to fit a taller an wider tire under the rear. I can live with the 4:56s if they are going to perform well with the rest of the setup. But if I can run a higher gear and perform almost the same, then I'll do that.
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Old Jan 21, 2012 | 01:08 AM
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What size tire do you plan on running after you lift it?
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Old Jan 21, 2012 | 09:37 AM
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Is this truck slammed to the ground or something? Leave the 4.56's and go with a 30" tire. N/A setups love the gear.
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Old Jan 21, 2012 | 04:56 PM
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If I remember right the swap will make your od rpm go up about 250 or so.
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Old Jan 22, 2012 | 05:32 AM
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Originally Posted by 01silvy
What size tire do you plan on running after you lift it?
I'd like to get a 30" tire under it, but don't want to lift it up to much.
Originally Posted by Beatdown Z
Is this truck slammed to the ground or something? Leave the 4.56's and go with a 30" tire. N/A setups love the gear.
Yeah it's sitting about 4/8, maybe lower. The rear tires are tucked up under the bed. Which is way lower than I want to be because it won't even go over a speed bump :crazy: if I can fit a 30" tire I'll leave the 4:56 gears for sure. What do you think about the stall with such low gears?

Originally Posted by lglowe
If I remember right the swap will make your od rpm go up about 250 or so.
That seems to be about right according the link beatdownz gave me. Thanks
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Old Jan 22, 2012 | 09:46 AM
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If you're looking for a quick 1/4 mile ET, than the looser the better. I'm thinking a 9.5" 36-4000 rpm stall would work well for a 224 cam 5.3. The low gears will actually make a looser converter more streetable.

For example, my 10.5" 3400 converter feels much tighter driving around on 31's than it does on 37's.
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Old Jan 22, 2012 | 01:55 PM
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Yeah I want it to be quick in the quarter, but it's going to see a lot more street than the drag strip. Thanks for clearing that up. I was thinking because the gears were so low I would want a lower stall converter, but I'm a newb.

Still looking for shops in dfw that will do an 80e swap. If anyone knows of one let me know.
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