Some of you may have seen posts in the past, but I still can't get any 60ft times out of my truck. Here's some FAQ

2000L, most of your common bolt ons. 4# lower and ported blower on stock block, tranny, rear (355's)

I dyno in the 400/500 club.

I've never been able to pull good 60's. I've got the JDM/Rancho Traction bars. I'm running 16x10.5 hoosier QTP's. My 60ft times are in the 1.91-1.92 at best

I've tried everything from tire pressures changes, launch techniques and it's been a year now and nothing. Even installed a line loc to ensure i was heating them up good. I just don't understand what's going on. I have run 1.94- 1.96 on f1's??

Anyone have any idea what's going on. I mean, i would figure i would at least be in the 1.8's, but honestly expect to see 1.7's. And i've run on sticky track conditions.

Is it the stock convertor with my power output??? Is it the gears in the rear??? Am I just plain expecting too much? I mean my truck is VERY Consistant in the 1/4, but I just think these 60ft times are no where near where they should be and I've been around these boards long enough to know that something just isn't right. I don't think think they are spinning that bad if at all but maybe they are.

Not sure what to else to do, what else to say.

 

If you get your launch on video that would probably help the most. You need to isolate what it is your trying to fix. Are the tires spinning in the wheels ?.....this can be a real problem.

Is the truck not pitch rotating properly (weight transfer) ? Some traction bars are too aggresive and cause the rearend to rise and really plant the rear tires, but just for a moment, and other traction bars are great at keeping the rearend stable but aren't aggresive enough to really help traction at all (read, zero weight transfer)

It takes a lot of power to pull that truck throught the timers in the 1.7's so you need to know if your spinning the tires or if you just need more power. A video or a good observer at the side of the track would help alot. And make sure it is some body that knows what the hell they're talkin about.

Last but not least......are you being as aggresive with the truck as you need to be ? You'd be suprised how much that helps....I've seen guys pick up over a 1/2 second after one of my pep talks You gotta drive it like you mean it.
Dale

 

thanks for the advice. Don was gonna come up to the line the next time I went to the track (yesterday), but to be honest, I forgot all about it. I was convinced that the wheels were spinning but I let someone borrow them last week and watched them rip off 1.7x's on a track that was barely prepped, but it was in the 40's. When is a burnout not enough? When is it too much??

I do have a screw kit for the wheels, but didn't put them on yet. Maybe the next best thing to do is get someone up at the line to watch. I'm lucky enough to have a few guys around here that should be able to see my problem. I'm gonna mark the tires and rims and again and see if they spin.

 

what shocks are you using?

I guess my advice would be give the truck to someone who can consistently launch their trucks with low 60' and see if they can pull it off. Maybe they can't but they will be able to tell what the differences are between trucks and help slove your issue.

 

I have the same problem with much the same mods. Can't get a decent 60' to save my life.... I have tried lots of different techniques too..... best has been 1.8xx but usually 1.9xx

Dale, I need one of your pep talks I guess, so you need to get workin on that project....JR

 

I'm using the stock shocks, but planned to buy Don's QA1's if he ever gets the one that broke fixed

 

I think 373 rear gears will help you 60 ft times

 

i was kinda thinking gearing too, but my guess is hes making more than enough torque to spin the slicks, so more than likely the gearing shouldn't be too much of an issue.

But again an experienced driver (not calling you unexperienced) should be able to determine if its the vehicle or the method.

And i bet qa1's will help too.

 

I was thinking gearing might be the main factor, that's why I was hoping to see some replies by some guys with 99's or 2000's.

As far as experience goes, I am in no way an experienced driver and would never claim to be, but I have enough seat time in my truck to know that I don't think technique is the issue. Everything I've tried has resulting in no difference, or worse times.

I mean yesterday i launched from just about an idle and walked it out, and then on the next run, brought it up to about 1200 and hammered it with the same result

That's why I'm thinking it might be something with the truck.

I'd like to see what some other guys with similar mods are getting for 60's.

I mean these tires are helping, there's no doubt. I can't run on my f1's anymore, they just go up in smoke.

I just think my times should be better.

 

Gearing is not your problem. When you get in the 400/500 club gears don't make that big of a difference. I went from 3:55's to 4:10's and barely picked up a tenth if that much. I have ran slapper bars and I am now running rancho style bars. My best 60' with rancho bars, QTP's and 4:10's has been 1.72. My best 60' with slapper bars, QTP's and 3:55's was 1.76. I'm going back to my 3:55's because it turns too many R's on the highway.

Your are either spinning or you have torque convertor/tranny issues would be my best guess.

 

Don....random thought.....could your traction bars somehow be installed wrong? Loaded or something? What about if you unhook the bar for a run and see what happens?

 

already checked them to make sure they weren't binding. Don had me check them last year when I first started having trouble.

 

Sounds like a tranny problem. I have heard of tranny's that work fine, and don't give any problems. But the truck does not 60ft good, and the track times will be off. From what I have read it is caused by burnt intermediate clutch plates.

Also, this happened to me. I went from a stock blower to a ported blower, and went from getting 1.75~1.79 60fts to not being able to get better than a 1.82 60ft. Track conditions were the same, I just couldn't get the truck to leave the line right. On the dyno I had 439HP, but only 513TQ I think I had more torque with the stock blower; which would equate to a better 60ft.

 

Let Don or an experienced racer you trust make a few passes . Not full passes. Just 1/8 mile stuff and compare #s.

It might not be the truck (That is NOT a flame to you) Just eliminate one of the factors.

Besides then you can really watch your truck launch.

VINNIE

 

My truck has 15k miles on it, and believe it or not, isn't driven hard on the street. Not to say it couldn't be tranny issues, but I don't think so.

Vin, we actually had a conversation at FFW last year about it and you told me to heat them up good and they should be fine after I break them in good. But they have quite a few passes on them now and here we are again.

I was gonna have Don take it for a few runs saturday, but he wasn't racing so it seemed dumb to have to go pay for him to go make a pass or two cause it was kinda busy. I'm sure after driving a truck of his calliper, he'd have to make a few passes in mine to remember how it was to drive such a truck I have no problem with letting him take it down the track, after all, I trusted him to run it on the dyno while I recorded it.....hehe.

Well here's what I come up with......gearing isn't gonna make much difference. I don't know 100% if I am spinning badly or not. I like to think I am but it doesn't feel like it and sound like it.

Anyone think it could be the tires themselves???? I've seen a couple guys with et streets that got rid of them because they just wouldn't hook.

I have nitto dr's on my truck on the street but haven't run them at the track. I think i'm gonna go make a few passes with them and see what happens. Then maybe I'll have a better idea.

I'll see if I can get Don or Jamie to give me a hand watching what's going on and even let them take it down a few times and go from there.

Thanks everyone!!!