GMCtrk

iTrader: (27)

Supposedly. But you're driving some slow van that likely barely runs 15s and giving bad advice.

Frankly, you have no credibility on this forum, nor do you have any time slips. Therefore, your opinion is invalid.

Fast355

But I do have enough experience with 4L60E piece of ***** to leave them alone and common sense to not throw good money on a piece of crap that is a time bomb waiting to grenade.

Van ran 9.20 @ 76 NA at 6,200 lbs. That is well into the 14s. Ran 9.90s with 3.73s and the 4L80E. Gears made a huge difference with the 80E. Sure the 85E/9.5 driveline eats 25% of my power but it will holdup for hundreds of thousands of miles at my power level which is worth it to me for a tow rig that sees lots of highway miles. Only ran it because it was there after I towed my friends car to the track. I added nitrous for the hell of it because I had the kit laying around and it is fun to surprise stock LS trucks on the street in a van.

zero2sixT

iTrader: (4)

Johnny Koons at JK Auto in South Houston rebuilt my 60e. It took what my lq9 put through it while it was N/A. Sold it to a guy doing a 5.3 swap in a s-10. Still alive as far as I know.



Another story about some beater *** **** box that was never fast...

Get a life dude

Fast355

Says the guy who never ran a boosted engine with a 60E behind it telling a guy to do it. Your NA 6.0 probably made less torque at the crank than the OP is making at the wheels. Yet surprisingly you have a 80E behind your boosted setup....Hmmmm.

Blown06

iTrader: (32)

I'd just like to point out, among all the bitch slapping, that the 4l80e has the same 1st, 2nd and 3rd gear ratios of a TH400. A 2.48 first gear doesn't make anything a dog....the weak *** motor does.

I side with the folks that would bolt in a stock 4l80e instead of a level 6000 4l60/65e.

Blown06

iTrader: (32)

Dropping a metric **** ton of money into a 4l60e build for a big power truck is almost as bad as the guys who spend the time and money doing the 14 bolt swap for a street/drag truck.

That should get everyone good and riled up!

Fast355

People drop wads of cash on building their 8.5/8.6 too. Stock 14 bolt is stronger than the best built 10-bolt. Mine had 250K ($150 200K junkyard pull)on it hauling around a heavy Express van and from the looks of things could have gone another 250K without touching it, G80 included. I had the factory axles on mine welded up and redrilled 5 on 5. I bolted the 10 bolt backing plates and drums to it and added larger diameter 3/4 ton rear wheel cylinders. I left the G80 and put 4.56s and new bearings in it. That being said if I were building a hot street/drag truck it would have a nice 9" Ford in it.

TCI 2.96 1st gear planetary kit is about $1200. Far cheaper than building a 60E to hold the power.

I have a friend using the stock 300K mile 4L85E in a Duramax van making over 800 ft/lbs at the crank. He tows heavy in OD with a 4.10 gear. Transgo HD2, deep pan and tuning are it.

Fast355

Well weak *** motor or even weaker rear gear. You can not run anything under a 4.56 gear and expect the 80E to perform off the line. Even with 4.56s and a 29" tall tire I only turn 2,800 rpm @ 70 mph with the 85E. At 450 TQ and 324 HP the L31 the OP is running is not a high rpm motor by any means. It would have ZERO problems pulling the 80Es first and 2nd gear ratios. In fact keeping the engine in the rpm range it is actually making power longer might actually even make the truck faster.

Blown06

iTrader: (32)

I've got stacks of time slips from a 4000+ truck over here that say otherwise.

4550 lb daily driver with a 4l80e and 4.10's running 1.50's in the 60

4110 lb daily driver race truck with the same 2.48 first gear as a 4l80 and 3.90 gears running 1.30's in the 60 with a mountain of power pulled out of it and ramped back in over 1.0 second.

Blown06

iTrader: (32)

Lots of uncalled for bashing on the 2.48 ratio in the 4l80e all of the sudden it seems like.

The new trans going in my truck has a 1.97 first gear.....prolly be a turd huh?