Drag Racing Tech - Still have wheel hop "& its worse now"...

with the LCA re-locating brackets on my 9", why will it do this, i'm running the same tires/wheels, the only diff is i went from 3.42s too 4.11s, it doesn't really do it on the street, but at the track it was horrible, what gives?

What is your pinion angle? Are your LCAs on the lowest notch on the brackets? Is your car lowered?

I'm not familiar with your set up-power, tires etc-can you list?

If im reading it right, the pinion angles at -3 too -3.5, the LCA brackets are add ons from moser (its a moser 9"), there in the middle slot, i don't think the cars lowered, but it may be. The tires are 255/40/17 Cooper Zions & there just shy of 25" tall, Its fairly smooth on the highway, no vibration, on the street it doesn't seem to wheel hop at all. There 4.11s & its spooled.

Your pinion angle doesn't need to be more than -2 deg. Either an air bag or stiffer sway bar would likely cure your wheel hop. Keep in mind that LCA brackets are for correcting suspension geometry on lowered cars. They are not some magic traction aid.

Your pinion angle doesn't need to be more than -2 deg. Either an air bag or stiffer sway bar would likely cure your wheel hop. Keep in mind that LCA brackets are for correcting suspension geometry on lowered cars. They are not some magic traction aid.

Where were you when i was asking about this before, i was told over & over again, LCA relocations brackets, LCA relocation brackets, LCA relocation brackets "on this board" get the drift, i was told the LCA brackets will help traction & wheel hop big time, period end of story :eyes: But now that i'm STILL having wheel hop BAD, your answer seems to be the logical one, i knew in my heart it would be in the springs/shock control, but i was told nooooo, its in the LCAs, WTF. Sorry for the rant, but i'm just a tad pist along with the damn 4.11s, car ran faster with the 3.42s & no traction, sure it may feel peppier, but the track #s don't lie, now i have to look into a larger tire to kill off some gear.

I think part of the problem is that the things suggested probably weren't meant with those tires in mind. Cooper zions?? I'm sure that tire isn't designed for a suspension that's forcing a bunch of weight on it.
You do sound frustrated and I totally understand but you've seriously got to be kidding thinking you're going to get any good results with those tires.
Go buy some real tires or borrow a buddy's wheels and tires and see how that goes.

-Mark

It is frustrating for sure, i'm to the point of sticking the damn 10 bolt back under it, but i know i really don't want to do that, i did find out a few things from someone who's help me before, the gears are a bit steep for a stock-cammed LT1, especially with a 25" tire, the only way of getting it to run good #s is shifting at 6K or putting a good cam in it & twisting it to 63-6500, but with 158K miles i don't want to do that, going to a bigger tire will hurt my ET & mph, so i was told to get a sticky 26" on the 16" wheels (that i have), the problem is, its not that these Coopers are junk, they are acually fairly decent, the problem is they are trying to hook, notice i said "trying", if they were fairly junky, it would just skate & not wheel hop, on the street they do hook pretty good, i'm also trying too hard leaving the line on these tires with the 4.11s, i guess for now if i go back to the track, i'll have to leave at a lower rpm like before & not be so agressive. The only plus side to this is, when i was leaving the track, one of those newer GTOs wanted to race, so i let it rip as i hit the highway, he was behind me, as he got in the next lane (race was already in full swing) he barely, & i mean barely pulled on me, just at me back bumper, we hit around 117 before a curve came up :confused: (that i forgot about) it was dark out, man that was close, well needless to say we were both on the brakes, that street racing is dangerous.

The DA was 3700ft. last night, not that good.

You should be able to side step that clutch off the rev limiter and not spin with good tires, you aren't making crazy power.

I'd get some new tires if I were you.

Move your lca's to the lowest hole. Get REAL tires. Change your pinion angle to -2.

That's a start.

I'd get some new tires if I were you.

Thats the plan, i've narrowed it down to ET streets, just don't know if i should get 26" or 28", i will eventually be running alittle N2o.

Move your lca's to the lowest hole. Get REAL tires. Change your pinion angle to -2.

That's a start.

I was thinking of doing that also, its in the middle hole & runs even with the ground, i started a thread earlier today about what i could do to take out some angle without adj. TA or LCA, i don't think anyone responded lol. I would also really like to know if i should run a 26" or 28" tire, i was told it would slow down with a 28", but would'nt it still be better then the 3.42s & a 26" tire?

You're far from needing a 28" tire, it will slow you down.