TXjeepTJ

iTrader: (5)

just got back from the track, everyone I raced had me from the start to mid track- but from there I pulled them very hard and put them behind me. From a stop, with the 4l80e I am EXTREMELY slow- it takes me almost half the track to build boost/power because of that 1st gear and the weight of the transmission. I could barely even do a burnout most of the time!

I don't really want to get a converter, mainly because it is my daily driver and it will kill my gas mileage. Should I just bite the bullet and get the new 1st gear you can install in the 80e? or will a cam or something like that solve my problem?

AKlowriderZ71

iTrader: (22)

How much boost are you building at the line? Probably not much at all. You'll need a converter to light that turbo. Not what you want to hear, is it?

BTW, if you wanted to have a good launch on a stock converter, you should have gotten a Maggie...... Just sayin.

pewterliftedz

iTrader: (4)

lil 50 shot at the line will do you good if your completely against a converter which is what that turbo needs..

idahoblkss

iTrader: (9)

that first gear mod is like 1k i think , rip off. what are your 60ft times? im not a turbo guy but ive heard others talking about a 2 step to get you off the line faster ? and yes n20 could do the trick too ... lol

Beatdown Z

iTrader: (18)

Increasing your compression ratio a little could help.

You don't have to get a really high stalling converter to help it build boost on the line. Many turbo guys do fine with sub-3000 rpm stall converters. The majority of converters that low will drive almost like stock.

You could also try to find a converter from a 4.8/80E combo if money is an issue. They stall a little higher than the 6.0/8.1 converters.

What gears do you have and at what rpm do you cross through the traps?

Bill Reid

iTrader: (14)

Yes, a loose converter will easily knock off a couple miles per gallon in city driving. In lockup on the freeway though it doesn't matter... you can still get great milage with distance driving. I've been running a Vig3200 for a couple years now. It took a little getting used to. Not bad for street driving but even with a huge tranny cooler temps start to warm up with alot of stop-n-go traffic. But hey, everything warms up in the summer here in Arizona . What size A/R exhaust housing are you running? If its in the .94 range you could step down to a .81 and spool that big T70 a couple hundred RPM sooner. Are you running 3.73's in the rear diff now? How about 4.10's?

TXjeepTJ

iTrader: (5)

.96 A/R, it was a standard T70 turbo from the KBracing kit, I'm still using the stock 3.42 gears .. lol

I'm running stock 3.42 gears, not 100% sure on the rpms when I cross the line- but it shifts into 3rd and then a couple seconds later I cross the line (on a 1/8th mile). That info might be wrong though

Yeah the first gear mod is $$$$$, but then again a good converter runs from $800-$1200. From what I read, 2 steps are not allowed at most drag strips lol that would be cool though. I was thinking nitrous also, as my only problem is coming off the line, at the track. From a roll the truck is pretty mean (I'm loving the 80e on that part)

agreed completely

I'm building ZERO boost on the line, I press the brake all the way to the floor and give it as much gas as I can before the tires break loose and my boost gauge sits at 0 gahh converters..


I was doing somewhat okay from a launching stand point with the 4l60e, the 80e really threw me off. I wasn't expecting the 1st gear to be so heavy, I expected it to be different that the 60e, just not that extreme lol

charcold-bowtie

iTrader: (10)

You do have some sort of checkvalve between you manifold and the brake booster right?

smokeshow

iTrader: (16)

Can you even hook if you do build boost on the line? When I had my 5.3 and stock 80e converter with the BIG s475, it took like 8 years to spool. But once it did, no more traction lol. Are you 4x4..?

charcold-bowtie

iTrader: (10)

Hes 2wd. I know wilde could spool his sts kit back in the day with a 5.3 and stock 80e stall IIRC. He also went 11.40's doing that.