12.704 @ 117.97mph

[z28misfit]

My fastest time so far is a 12.7 @ 117.97mph. What should my car be able to run with a good 60' time . My current 60' on that run was a 2.2! I'm thinking I should be able to run high 11's.

[z28misfit]

I guess I'll have to find out next spring. I broke my ring gear again and will not waste my time installing another set of gears this year, especially since the end of the season is basically here.

[bene]

That's moving. Should be in 11s.

[Mr. Luos]

Went 11.9 at 117.82 last night.
1.81 short time.

You will probably lose a little trap speed when you hook better. But not much.
Good luck next time out!!!

[Demonicbird00]

first off what do you have??? mods,turbo,s/c,n20,etc?????

what suspension set up do you have?

what tires are you on?

m6 or auto?

hard to tell you what you can run w/ out any info....

-brandon

[INMY01TA]

Looks like you got the mph.

[z28misfit]

My mods are in my signiture. I have an M6 and stock suspension. The current tires that I'm running are BFGoodrich drag radial T/A's 295/35/18. I run about 12psi in them.

[Demonicbird00]

you should be pulling easy 1.6s/7s i have the same DRs and your running them to low of pressure run them at 17 or 18 psi and heat them up and you wont have any spinning issues.

what clutch do you have? stock rear or 12 bolt?

def should be mid 11s easy.

-brandon

[z28misfit]

I have the spec 3 clutch, stock 10 bolt with 4.10gears. I would have thought that 17 or 18psi would be too high. By the way, I just broke my ring gear for the second time this year. So therefore the car is parked for the year untill I get a stronger rear and figure out what I'm going to do for suspension.

[Demonicbird00]

w/ 17psi i went 1.53 60' and im on a lowered road race suspension, so for the answer of, is that to high of pressure "no"

yeah def dont wait anymore money on the 10 bolt and save up for a 12 bolt.

-brandon

[z28misfit]

What rpm do you launch at to get that kind of sixty foot?

[Demonicbird00]

i was launching from 5300 and slipping the clutch just a hair.

when i was stock clutch and rear i was going from 4500-5k and slipping it all the way dur to the rear.

but w/ your rear you should easily hit 1.8s

-brandon

[z28misfit]

I'm surpised you launch at 5300, I figure in the 3500 range should be good for me.

[Mr. Luos]

I bog from 4100 RPM's.
Still working on it.

[INMY01TA]

I launch at 5,500. :devil:

[Mr. Luos]

I should't need to.

I have bogged my way to 1.67 short times.

[z28misfit]

Heck I spin launching at 3500, My best 60' time was a 2.2 something leaving off an Idle. It bogged for a slight second and then took off. That was better than me leaving at 3500rpms.

[stevegrizzle]

My mods are in my signiture. I have an M6 and stock suspension. The current tires that I'm running are BFGoodrich drag radial T/A's 295/35/18. I run about 12psi in them.

just a thought, but wouldnt you want a smaller wheel tire combo with more sidewall i.e. 295/60/15's

[stllslo]

with that mph u should be in high 11s..

[z28misfit]

I do want to get some Welds or something but right now I dont want to spend that kind of money for another set of wheels and tires.

[LS2Tuner]

I have the spec 3 clutch, stock 10 bolt with 4.10gears. I would have thought that 17 or 18psi would be too high. By the way, I just broke my ring gear for the second time this year. So therefore the car is parked for the year untill I get a stronger rear and figure out what I'm going to do for suspension.

We get the best on those 18's running 19-17.5 depending on what springs or air bag press.
12 psi. is way to low!!! If you were to go to a nice cement parking lot and do some holeshots you would see that the edges are going to be WAY darker than the center of the tire.
You need to have enough press to keep a nice square tread pattern on the track!!
Sorry to hear about your gear........You mentioned it was the end of the season thats one of the biggest reasons I moved out here to AZ we race year round.

[z28misfit]

I guess it would be cool to live where you can always cruise and race. I look at it this way though, If the car is broke during the winter it's no rush to fix it nor does it bother me being broke. This past summer I got so mad because I just did the cam and a bunch of other work and the first time to the strip I broke my gears and tranny. So it was a mad dash to get parts as soon as possible and more money I wasn't expecting to spend for the season.

[z28misfit]

thanks for the advice on my tire pressure. I still have plenty of tire left for next season to try that out.

[LS2Tuner]

No problem.....Also if I was you put your wheels in the basement for the winter it will keep them soft and sticky for next spring.....:yup: I found that the freezing and thawing make them almost as bad as sitting in the sun for some reason.

[z28misfit]

Right now they are on the car out in the garage. The garage is pretty well heated so it shouldn't be too hard on the tires.

[z28misfit]

What kinda 60' times do you manage with an 18'' drag radial?

[02blkws6]

I have gone 11.73 @ 117 with a 1.7x 60' letting off to get the tranny to shift into 3rd (drive).

[z28misfit]

If I can at least pull the 60' you did that would help me out alot

[LOCKDOWN]

What kinda 60' times do you manage with an 18'' drag radial?

I'm interested in this info as well

[z28misfit]

I buddy of mine has the same tires on his camaro and I think he said he pulled a 1.7 60' with around 12psi. The only thing is his is auto and stock stall. But I'm pretty sure he sprays off the line.

[LS2Tuner]

God, that is VERY low pressure psi for that type of "rubberband" side wall dragradial. On the 17" and 18" we have NEVER had any luck with anything under 16.5psi. Then again you would be amased at how in accurate the cheap guages are atb that low of tire pressure also.

The only way I could see that being optimum psi would be if you had a 325 on a 8.5"-9" rim where the side wall is balloned because the tire is wider than the wheel....... When you run that low your not getting full width tread contact bwith the track. All the weight is on the edges of the tread.

[z28misfit]

That does make sense. Maybe his gauge is off. I sure as hell know that all I do is spin with that pressure. My intensions are to get a set of Welds for the car, but for now I'll have to make do with what I got. If I can hook that's all that matters.

[z28misfit]

Anyone have Nitto drag radials,I thought about trying them out?

[LS2Tuner]

Yeah unless you have a Low TQ. # the Nitto's SPIN!!!!!!
IT JUST DEPENDS ON WHAT YOUR INTENSIONS ARE........ Are you trying to hook up horsepower or get milage out of a "Drag Radial's"........... The Nitto's are NO comparsion to the MickeyThompsons!!!!!!:yup:


:drivin:

[z28misfit]

I thought if the Nitto's hook and the tread last longer I may as well get them. I don't think Mickey Thompson makes 18" drag radials. Not sure if I want to use my old 16" wheels with them or not, the biggest drag radial I found was only like a 255-50-16 or something like that. I had the car tuned on a hot and humid 90 degree day. My #'s were 412hp and 368 tq so hopefully that will improve on a mild day. Hoping an electric water pump and 160 stat help out a little.

[powermad]

My fastest time so far is a 12.7 @ 117.97mph. What should my car be able to run with a good 60' time . My current 60' on that run was a 2.2! I'm thinking I should be able to run high 11's.

That was almost my exact run on my Gtech RR last night. 12.704@117.99. 60' was 2.298. Bald Falkens (275s) on cold roads. I need new tires! Good to know that if I can learn to drive I should be close to 11s.

[z28misfit]

It stinks having crappy 60' because getting that down will mean a big difference in the 1320. What mods you got done?

[z28misfit]

When my car was bone stock(cut off muffler only mod and k&n)and stock wheels and tires. I ran a 13.99 at 106 or 108mph not sure off the top of my head, but I know my 60' was a 2.4.

[powermad]

It stinks having crappy 60' because getting that down will mean a big difference in the 1320. What mods you got done?

I have a Vararam intake, Shaner ported/polished T/B, LS6 intake manifold, G1 cam, Kooks L/T headers with high flow cats, Z06 Ti exhaust. Car put down 381 RWHP before the Ti exhaust, Vararam and throttle body. Need another tune but I am hoping for 400 RWHP, adding those mods my traps went from 112-113 to 116-117.99. I really need to hit the track but closest one is 2.5 hours away in Seguin.

[z28misfit]

I think it would be a good idea to get some sort of drag tire.Otherwise I think you might waste your time going on street tires. Just my opinion though.

[z28misfit]

Once I order my new rear I was planning on having it shipped with 4.30gears. I have 4.10's now, does anyone think this will hurt me at all. I don't think it should but want some other imput on it. THANKS

[BLKCLOUD]

With stock heads/cam, 4.30s might be too much unless you step up to a 28" tire. For example, 115 mph with 4.10s and a 26" tire will turn the motor to ~6100 rpm. 4.30s would turn it to almost 6400 rpm.

[z28misfit]

I'm not sure on the height of my tire now. I'll have to measure , I kinda think it might be close too 28". I know the tire size, it's a 295-35-18.

[BLKCLOUD]

Those are very close to stock - about 26.1". Also, low profile tires like that aren't real good for traction, which is another reason not to go with 4.30s.

FYI...to get approximate tire height.....multiply section width by height (with a decimal). Multiply the product by 2. Divide that by 25.4, then add the wheel diameter. For yours it looks like this:

295 * .35 * 2 / 25.4 + 18 = 26.1299...

[sobaka79]

my head hurts...

[z28misfit]

Thanks. That stinks, I thought the 4.30's would be good, I really wasn't planning on having 4.10's in the rear when I order it.

[z28misfit]

I think I'll just go with the 4.30gears. I'll just change my tire brand. I know they say the Nittos don't hook as good, but they make a 305/45/18 and it's 28''tall. So I'll just have too try them out I guess. What I really want is a set of Welds or something, but that's not going to happen this season.

[BLKCLOUD]

What's the point of putting in a lower gear (higher numerically) only to "kill it" with a tall tire?

Answer - none. The effective gear ratio of a 4.10/26" combo and a 4.30/28" combo is pretty much the same. For drag racing, the only reason to step up to a larger tire is to get better traction. However, that really only applies to a race tire (like slicks). Honestly, with what you're doing, you'd be wasting your money - IMHO.

Unless you plan to run slicks at the track (and do a lot of track time), I would stick with the 4.10s and a stock-height tire.

[z28misfit]

You make a good point. But I will be eventually getting a set of drag slicks. Just not this year. At least I can't see it happening. I do appreciate your input though. When I get the rear, I really don't feel like changing gears when the time comes for slicks. It sounds dumb and I know I can do gears because I've done them already, I just don't feel like doing it if I can avoid it right off the bat.

[BLKCLOUD]

Then when the time comes to get slicks, just get a set of 26x10s and be done with it - they will work great with the 4.10 gear, and will weigh a lot less than the 28s too.

[z28misfit]

You make another good point. Just ordered the rear today, ended up getting an S60. Was going with the 12bolt from Strange w/True Trac, but ended up finding out that the True Trac wasn't setup for their axles so went with the S60 with the True Trac. Ordered it from Eric at Midwest Chassis & Performance, Inc. He gives a pretty good deal on them and the 12bolt.

[z28misfit]

Like I posted before, I hear the Nittos don't hook that great but are they really that bad? If it just takes a longer burnout to get them to hook is that really all that bad? They can't be a total waste of money I hope!

[LS2Tuner]

Like I posted before, I hear the Nittos don't hook that great but are they really that bad? If it just takes a longer burnout to get them to hook is that really all that bad? They can't be a total waste of money I hope!

They are if your trying to hook and make a quick pass!!! It doesn't matter if you do a John Force burnout....... Making them too hot makes them spin more than if you just went around the waterbox like you should anyways and did a quick spin to clean them off. If your planning on making a decent amount of power Nittos are not going hook. Buy some Mickey's or at least BFG's if your going to buy some drag radials.
I'm doing 1.28 60 foots on Mickey's 275/60/15's.:yup: And that's spraying 250 right out the gate!!

[Firebirdjones]

I agree, go with the mickey drag radials, I ran BFG before that, and love the mickeys even more. My 60 foot has been as quick as 1.59 in a 4,108 lbs. car on the motor.
And yes, going with a taller tire will give you more contact patch. Don't necessarily have to go wider. In classes that limit tire width, like a 10.5 inch tire class for example,,,ever look at those cars? The tires may only be 10.5 inches wide but they all run at least a 30 inch tall tire or more, you get more contact to the ground from the larger diameter, then you run more rearend gear to compensate. This is nothing new and yes it's benificial. Larry.

[djvaly]

Went 11.9 at 117.82 last night.
1.81 short time.

You will probably lose a little trap speed when you hook better. But not much.
Good luck next time out!!!

yeah, 11.9 in Colorado = more or less 11.2 corrected sea level :)

[djvaly]

I have the spec 3 clutch, stock 10 bolt with 4.10gears. I would have thought that 17 or 18psi would be too high. By the way, I just broke my ring gear for the second time this year. So therefore the car is parked for the year untill I get a stronger rear and figure out what I'm going to do for suspension.

yeah if u run better than high 11s with good traction tires a 12bolt would be very desirable at that point.

[z28misfit]

Well I'm currently running a BFG 295-35-18 drag radial. It didn't work out yet but I'm finding out that I ran the pressure too low so I'll have to try with a littlw more pressure. I'm not really in the market for a set of welds plus 4 tires yet, so I'll have to make do.

[z28misfit]

My rear is should be hear around Tuesday. I went with the S60 and had to get 4.56's in it since it wouldn't be till another month or so untill the got the 4.30's back in stock. So now I definitely need a bigger tire. I think those gears might make me tach just a little too hard at the end of the track. So bigger tires and heads are prolly gonna go on to help out alittle.

[z28misfit]

Also if I didn't post it before, all my runs was with stock suspension. I got all my suspension parts the other week or so. Hopefully it will help the 60' out.

[T's99BlackLs1]

Well if you decide to sell those wheels I know one black z28 i think they would look pretty good on lol:yup:

[powermad]

My rear is should be hear around Tuesday. I went with the S60 and had to get 4.56's in it since it wouldn't be till another month or so untill the got the 4.30's back in stock. So now I definitely need a bigger tire. I think those gears might make me tach just a little too hard at the end of the track. So bigger tires and heads are prolly gonna go on to help out alittle.

Intersted in your new results.

I went to a bridgestone Potenza 285/30/18 (vs the Falken 275/40/18) and the tread width was almost an inch greater- 9-3/4 to almost 10-3/4s. The shorter tire is wrecking havoc on my traction control but I can actually use 1st gear now. New best (on the G-tech) with new tires is a 12.324 @ 119.42, still crappy 2.1 60' times but once the tires do stick they don't stop :yup:

[z28misfit]

Pictures of the new rear.