SeaDrifter's 1997 FZJ80 LS2 2UZ 4.7L Killer

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RockJock82

Sometimes you have to kick a little A$$
10 Year 15 Year
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1997 40th Edition FZJ80 with 200k getting the full make over. To start the drivetrain has been ditched and a LS2 with 4L65e has been purchased to take its place. The rig is also getting a full Slee 6inch lift with ADS remote resi shocks, AOE front winch bumper and rock sliders, 4x4Labs rear tire and ice chest carrier, 4:56 gears with the stock lockers, front diff rebuild with Aussie rotors all around, Depo projector head lights, leather interior kit, Safari snorkel. The LS2 is out of a 2007 GTO that had only 30k on it. These motors are 400hp stock but will be getting a Comp cam, roller rockers, upgraded valve springs, 90mm DBC throttle body, all said and done with a good tune she will be pulling 460hp all day long.. The 4L65e will be upgraded with a Transgo full shift kit to handle the abuse. More photos and info to come!

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SOMEBODY GET ME A BIG ASS TUB OF POPCORN.

proceed.
 
Would be cool to throw it on a 4 wheel dyno when you're done! Trying to collect as many samples as possible, I am still working on Lou to get him to Dyno his 2UZ. But I think that the 4L65e won't suck as much power as the a343f so you will see more power to the wheels. Going to use the stock TC?
 
Great idea! If the owner wants to spend the money on dyno time I am more than open to it :). There is no doubt it will be 450+ at the flywheel. We considered throwing some boost through it, but 600hp would be a little much for a 6inch lifted tank... These LS motors handle boost quite well and produce some strong numbers...
 
Yeah I have seen stock bottom end on LS's take almost 1000hp on boost. lol. I am really curious to see how the power is put down if you are using stock TC but different transmission. I can't really estimate crank power but going off wheel power. The truck made 135awhp stock and 317awhp so 2.34 times more than stock of 212bhp so my only guess is around 496bhp. lol. So I would really like to see another truck in the 400's on an all wheel dyno even though it will be apples to oranges because you are using a much newer trans.
 
The 4L65e uses the same technology of the 700r4 that GM has been using since the 1980's other than its more electronically controlled. Parts for Parts its the same transmission the case is a little different.
 
That's what Willis talkin bout! :hillbilly:
 
Yep the quicker it gets into lockup the better the gas mileage and better power will be put to the ground. Also produces less heat. The A343F is a fine transmission but the 4l65 and 4l85 are both better when it comes to drivetrain loss, power to the ground, towing and heat.
 
agreed ^. Your rig is still badass though!
 
Is that going to be AZ emissions compliant? I might have to think about this in a few years.
 
Isn't the 4L6* trans really problematic? I don't know about the 65 iteration but I've seen tons of failed trans on Chevy trucks personally. Is it just poor stock but easy to upgrade?
 
What did they fail from? They are a good transmission in my opinion. I know quite a few people running that trans n stock trucks and in swaps. The only one I've seen fail was pushing 310,000 miles with minimal maintenance done
 
sub'd. looking forward
 
I don't know why they failed. They weren't my personal vehicles... just assigned to me at my last company. One 2002 Silverado never towed with. Truck would either not go into gear or would just slip or be in neutral on its own even though drive was selected. That truck was lemonned by Chevrolet after 3 rebuild/replacements (don't know what was done) and problem occurred again. Under 30k on truck. Then had a 2003 GMC 1500 as a replacement. One transmission rebuild under 36k miles. One 2006 GMC 1500 rebuilt trans at 15k. I've talked to many people needing rebuilds on trucks with that series trans that I would consider really early. I Googled it back when it was happening and there were tons of complaints similar to problems we had. Recently I tried to talk a colleague out of buying a 2013 Silverado because of my personal experience. I sent him a link I found on Edmund's with loads of tranny failures on trucks that I believe would have the 4L6* series (not near as much with the 4L8*). His truck has around 10k on it and he's already had it in the shop for over a week for one trans repair. I don't know what they did to it. He didn't want to talk about it... guess he was waiting to hear a "told you so" from me :D
 
And for every one of those complaints there are 10 of 1000's with no issue. One of my work buddies is getting close to 400,000 miles on his 97 Chevy on original motor and transmission. The company we work for has one of the largest fleets of vehicles in the world (at one time lager then UPS) and I have not heard of many issues. With transmissions under 200 k.
 
Well I must have been really unlucky because I had experience with three personally
 
JLee said:
Is that going to be AZ emissions compliant? I might have to think about this in a few years.
Click to expand...
Yes it will be AZ EPA compliant and also in Texas where it lives.
 
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