Im thinkin the 80e lvl4 will be better for my application then the 65e lvl5 because I use my truck for work(pullin trailor),and daily driver. I plan on goin FI in future, but is the 65e good for all around or is it rated strictly for drag abuse? What would be better, any help would be great..Thanks-

 

Go with the 80e.

 

2 different animals. The 65e is a direct swap, the 80e requires some minor fabbing. There is no comparison, the 80e is a lot stronger. You give up a little hp with the 80 but gain strength. Both can be used for drag racing and neither is exclusivly just for it.

 

Yeah, what he said. If you're sticking with the power level on your sig then keep the 65.

 

I'd go 80E... I did and never looked back . Lose a little power? Sure... just turn up the wick. Thats the beauty about FI.

The 80E has a taller 1st gear... some like it some don't. With the proper gearing and torque converter it can be an advantage. It really depends on how you want the power to hit... and for the most part everybody is different. The final ratio isn't as low as a 6xE... but I can't hardly tell the difference there.

Bill

 

i can deal with minor fabbing for a lot stronger tranny, just seems worth it to me.

Im not sticking with it tho, like i said... future FI

The beauty of FI.....hmmmmmmmf

 

I wouldnt doubt a stock 80 is stronger then a lvl 5 65 its one of the best mods ive done No regrets.

 

do you have a stock 80 with a FI setup?

 

I have a Stock 80E and stock converter with a Transgo HD2 shift kit. I love it.

I'd say a stock 80E is stronger than a level5 65E. and the sock converter is nice. Just tight enough for DD and loose enough for racing. Also the taller 1st gear helps with traction a ton.
ill straighten out my sig so its readable.. haha

don't worry bout some of them whining bout you get a lot worse gas mileage too.. I get better in town and bout the same on the interstate compared to the TT3000 and 65E.

also if you plan on going FI in the future look at the Hydroboost brake setup. its amazing! I can now get boost by brake stalling mine now.

 

The 4L80E has the advantage hands down. It is rated to handle 440 ft lbs in a 8000 pound truck.

Here is what wikipedia has to say about the 4L65E. In 2001 an updated version, the 4L65-E, was introduced. Five-pinion planetaries, along with a strength-improved output shaft, were improved to withstand the 300+ ft·lbf (over 400 N·m) of torque of the 6.0 Vortec engine.

Thats in aproximately a 5000 pound truck. Basically the 4L60E was built for a B and F body car and it was just too cost effective to not use it in the light duty truck platform since they were never intended to be used or modified in any way shape or form.