LBZ: First Run at the Strip

JoshH

Daggum farm truck
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Feb 14, 2007
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Texas!!!
1.7-1.8 should be pretty easy. If you're on a track with really bad track prep, you will have a hard time with that though.

What type/size tires do you have?
 

othrgrl

Diesel Addiction Owner
Mar 10, 2008
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Wilmington NC
www.mydieseladdiction.com
On street tires (true street tires, not drag radials or cheaters) 1.6 is about the best you'll typically get, as Josh said 1.7s are good, and 1.8s are average/getting bad. That is half a second faster just to the 60' mark from what you are running. I air street tires down to about 28PSI in the rear and 36-38 in the front - the pressure depends on the size and type of tire though, you want a good flat contact patch - if your tires break loose and you see 2 marks per tire on the outside edges than you need more air; 1 skinny mark in the middle you need less air. I have never launched at less than 1800 RPM and just go up from there until you can't hold traction.

LBZs have gone 12s on bone stock trans with a lift pump, and with a bone stock fuel system (no lift pump) and built trans - I don't know of any that have gotten 12s (or tried) on a stock trans without a lift pump, but I'm sure someone has done it.
 
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Buccanoles

Member
Aug 14, 2006
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1.7-1.8 should be pretty easy. If you're on a track with really bad track prep, you will have a hard time with that though.

What type/size tires do you have?


I am using 265 Nitto Terras. They werent aired down. Once these tires wear out I think I am going to get a new set of tires/wheels for daily driving and use the stock wheels with some drag radials for track use.
 

JoshH

Daggum farm truck
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Feb 14, 2007
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Texas!!!
On that size tire I usually run about 30-32 in the front tires and 28-26 in the back tires. You'll also want to lower your torsion bars all the way. Run up to about 2000 RPM or 12-15 PSI. If it spins, back down the RPMs a little. If it doesn't, raise it a little.
 

othrgrl

Diesel Addiction Owner
Mar 10, 2008
2,151
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Wilmington NC
www.mydieseladdiction.com
So my 1.8 is bad?

On a 2WD it's excellent :hug:

Is the reason for lowering the torsion bars to protect the axles or tie rods?

Both. The flatter the CV and tie rods the better.

I like to keep more pressure in the front to keep it from adding so much rolling resistance from plowing a half flat tire down the track with that much weight on it.
 
Dec 2, 2006
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I'm getting the sleeves on right now for the race tomorrow night.

I'm running 285/75/16 Hankook Dynapro ATM's.

There's not a air compressor at the track for me to air my tires up if I let them down.

So, we will see.
 

Drholliday

Member
May 28, 2008
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I'm getting the sleeves on right now for the race tomorrow night.

I'm running 285/75/16 Hankook Dynapro ATM's.

There's not a air compressor at the track for me to air my tires up if I let them down.

So, we will see.

I drive home with my tires aired down all them time... Makes for some interesting stop light races on the way home, lol. I just air up when I get to the first place with free air.
 
Dec 2, 2006
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TN
I drive home with my tires aired down all them time... Makes for some interesting stop light races on the way home, lol. I just air up when I get to the first place with free air.

This was probably why my truck hopped like a bunny rabit on one pass. I didn't air down at all, I probably should of.
 

whitetrash21

put on da damn helmet day
Apr 29, 2008
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This was probably why my truck hopped like a bunny rabit on one pass. I didn't air down at all, I probably should of.

My 2wd did that. I had somewhere in the neighborhood of 3000 lbs in the bed and 80 psi in the stock tires. Truck felt like a it had a pogo under the rear axle. Aired them down and it hooked better. Made the same pass though with spring clamps and that solved the hopping issue.