Calling on the Drag racing guys - Chevy Impala SS Forum
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post #1 of 14 (permalink) Old 10-21-2015, 03:27 PM Thread Starter
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Calling on the Drag racing guys

OK, What can I do to help this battleship hook?

It did great with the stock cid but now I'm 383 and I have brand new Nitto 555's on it and get them damn hot. It blows the tires off. YES I know I'm making a lot more hp and tq but I just can't get that squatting feel like it wants to hook.

The car has 1.5" lower springs and aftermarket upper and lower arms w/ poly bushings. Pinion angle at 1.5*. My drag radials are shot and I know a new set would help.

It just feels like it just wants to ride a burnout for miles...and it does. Great for cruise nights to piss off the cops. But I need to hook better than what I am.

I know there's guys on here making a lot more hp than me that hook well.

94 ImpSS, Currently a 24x 383 LTx. Built by Me.
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post #2 of 14 (permalink) Old 10-21-2015, 04:04 PM
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My guess is the if you look at the tire is will show you the compound rating, ie. its hardness.
compare it too the drag radials and you may see why it is so easy to break loose a street tire.

I think it's a combo of things, trying to hook on a street tire with a motor with decent HP.

How fast you squeeze the throttle?
How much you load up the TQ converter?
Track prep ?
Susp mods ?

we can go on and on.....

Maybe if you tell us where you are trying to hook, we can give you a guess?
-ALF out....

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post #3 of 14 (permalink) Old 10-22-2015, 07:34 AM Thread Starter
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Well, on a last minute decision after work last night, we ran down to the local track for T&T. Other than quite a few disastrous mistakes on my part, I got 2 good runs in. Here's the best run:

RT: .0350
60': 1.8488
330': 5.3619
594': 7.7680
1/8: 8.306
MPH: 83.49

No matter how bad I did off the line, 11 runs were at 83mph. The 555's were inconsistent. Only 3 runs they hooked hard and all the others the blew off. They did had to get hot. I did the same burnout each time. But the 60' is the best it has on this new build. My wife would cut 1.7 and 1.8 with old setup (stock 350 w/ hotcam, 3200 stall)

Better tires in order I guess. Oh and new cam for more topend power. Anyone interested in a stump puller cam?

94 ImpSS, Currently a 24x 383 LTx. Built by Me.
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post #4 of 14 (permalink) Old 10-22-2015, 08:41 AM
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Mid 1.8X 60' times are not bad on street tires, so don't expect much better until you get some drag tires under it. Don't heat up street tires; you're making matters worse. Unlike racing compound, they just get greasy when you heat them.
Even your old drag radials would do better than new 555's.
Have you corrected your lower control arm angle with LCA relocation brackets since you lowered the car? If not, there's an opportunity.

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post #5 of 14 (permalink) Old 10-22-2015, 08:54 AM
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Just get some slicks and you'll be good.
8.30 in the 1/8th roughly translates to 12.86 in the quarter.
Whats the specs on your "stump puller" cam?

Nab
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post #6 of 14 (permalink) Old 10-22-2015, 10:53 AM
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Wink

Ya blue wail is right, just get some slicks with
15 inch wheels. I don't even bother going to the
Track without slicks. Even my little 15x8 Hoosiers
Have netted 1.58 60fts on spray. It's frustrating
Going to the track without traction. 83 mph
Sounds about right for your time though . Although
It seems low for a 383 unless your car is heavy.
If it doesn't hook on slicks, you may want to take a look
At your suspension . On the street, forget about it, it's a lost
Case .I don't hook up on the street even with slicks .
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post #7 of 14 (permalink) Old 10-22-2015, 11:53 AM Thread Starter
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Nab, 228/234, 576/576 w/ 1.6, 112. Tq curve was flat from 2800 to 5000 from just below 400 to about 450tq. Hp started low and just barely broke 400. The tq was diving down towards 5200 as the hp was coming up. Cam motion designed this grind.

I do not have any relocation brackets on this car. Might look into that. As for the tires, I tried a cold tire and blowing them off is an understatement. The car started North, then West then East.... Didn't want to end up going South so I got out of it quick. I tried a few heat levels in the burnouts. These 555's like to be real hot. Semi hot they were pretty greasy. Basically they are just like my MT DRs. Gotta really roll the smoke and they hook.

The best run was my first. (sarcasm) I haven't been on the line since April or so. I saw the first yellow light flash on and I jumped. Man, did I look like an idiot. LOL So I let the other guy launch then I gave er hell.

94 ImpSS, Currently a 24x 383 LTx. Built by Me.
Machining by Competition Automotive & Machine
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Tuning by James at Shortuning.com
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post #8 of 14 (permalink) Old 10-22-2015, 01:17 PM
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get MT ET Street (tube) 26x15 or full slick

start around 16 PSI. Do a short burnout to heat/clean them up

I would recommend a line lock vs power brake to heat the tires up

try launching off idle. If tires hold you can try a slight power brake launch

I found the Dick Miller triangulation braces help. Could also try a air bag in PS rear spring

T&T days typically have zero to little track prep so it is what it is.

\'96 BBB 383/T-56
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post #9 of 14 (permalink) Old 10-22-2015, 01:40 PM
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Quote:
Originally Posted by streetcar2try View Post
Nab, 228/234, 576/576 w/ 1.6, 112. Tq curve was flat from 2800 to 5000 from just below 400 to about 450tq. Hp started low and just barely broke 400. The tq was diving down towards 5200 as the hp was coming up. Cam motion designed this grind........
What's your compression ratio?

Who did your heads?

And like Pat and Nab stated, you're not gonna improve your launch without some drag radials or slicks.

KW

1996 BBB SS, 398ci Solid Roller LT4, TorqHead 24x Conversion


1995 DCM SS, LS3, Texas Speed 260cc PRC heads, Lingenfelter GT1-1 cam, V-max 90mm TB, Headman 1 7/8 LT Headers, 2 1/2" cat-back, 3200 Circle-D TC, 3.73 gears -- 493HP/434TQ @ the wheels (Daily Driver)


2014 Chevy SS; Low Lash Solid Roller 429ci LS3 -- 548HP/464TQ @ the wheels....

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post #10 of 14 (permalink) Old 10-22-2015, 03:23 PM Thread Starter
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BALLSS, Track prep was great. They had a bunch of doorslammers there getting ready for their finals this weekend. I had a few of those tires for my Camaro. great tires. I'm just trying to get the best all around set up.
I do have a Line lock installed and ABS is deleted, just not wired up yet. Just haven't gotten around to doing it. I'm still trying to decide where I want the button. I already have all the nitrous buttons in the dash bezel. (not hooked up, need new solenoids)

KW, The CR is 11.2 and the heads were just unshrouded and port matched years ago when I had my hotcam. But for this build I had bigger valves installed. I already had a full set of S/S valves on the shelf so I figured I needed to use them. This cam has alot of cam surge. In traffic is really bad and at 55-65mph you feel it too.

Hopefully this winter I can blast a bunch of money into this extra LS1 I have and drop it in.

94 ImpSS, Currently a 24x 383 LTx. Built by Me.
Machining by Competition Automotive & Machine
Harness by BP Automotive (Bill)
Tuning by James at Shortuning.com
Mike Harris Crossmember
much, much more....
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