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Old 12-23-2008, 01:24 PM
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Hooking power to the pavement.

I have a '74 Chevy P/U with an F'bird'88 build. My problem is that in the last week, I have been having problems getting the 400hp to hook up to the pavement. Both tires break loose when I nail the pedal. I can break the tires loose on a whim. The truck has posi-traction, and this may be the problem. By experimentation I have noticed, that It is easy to break loose the tires when gassing it around a corner as well. I was wondering about a set of traction bars, but to tell you the truth, I have not noticed any signs of wheel hop.

I was thinking that I have maybe realized the full power potential of this build as it may be finally breaking in. I have included a link for a pix of the truck.

Thanks!

Click for picture of traction problem

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Old 12-23-2008, 02:08 PM
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Both tires break loose when I nail the pedal.

Do ya think the snow is a comtributing factor?

First thing you need for off the line traction, is some high traction, sticky compound tires. "Truck tires" aren't going to cut it.
M/T ET street, Sportsman PRO, Drag radial etc etc. Hoosier QT pro.etc

Any kind of traction bar (even a simple slapper bar) needs a good bit of intial tire grip to put the wheel torque to leverage to further help weight transfer and control leaf spring deflection.
A driveshaft safety loop is a real good idea.
www.calvertracing.com

Last edited by F-BIRD'88; 12-23-2008 at 02:18 PM.
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Old 12-23-2008, 02:16 PM
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Quote:
Originally Posted by F-BIRD'88
Both tires break loose when I nail the pedal.

Do ya think the snow is a comtributing factor?

First thing you need for off the line traction, is some high traction, sticky tires. "truck tires" aren't going to cut it.
Yep, it's the snow.
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Old 12-23-2008, 02:18 PM
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P/u are light in the back
put a few beer bellied rednecks in the bed then youll hook like there is no tomarrow!
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Old 12-23-2008, 03:39 PM
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Second the driveshaft loop. Use a 360 degree loop such as a Lakewood and mount it within 6" of the front u-joint. When the front joint breaks, the driveshaft can auger up through the floor and cause personal injury. Hence the requirement for a 360 loop.
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Old 12-23-2008, 04:18 PM
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Sorry guys <g>

I am in a pretty good mood today because I could call in to work and take the day off because of the snow.

I felt like yankin' yer chains a bit

I know the techinspector1 and F-BIRD'88 must be getting a bit of snow as well.

If it keeps up, I won't even be able to find my truck!

The Driveshaft safety loops sounds like a sane idea. Not too difficult to fab in the shop, no?

Thanks guys.
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Old 12-23-2008, 04:21 PM
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Y really need to find a light weight toy (camaro, V8 RX7) to put this motor in.

http://vettefbodyvideo.vidiac.com/se...7801204f36.htm
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Old 12-23-2008, 04:58 PM
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I live in Phoenix and have seen only one light dusting of snow in the past 35 years.
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Old 12-23-2008, 05:03 PM
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you're right but..

F-BIRD'88, to keep it in perspective, this truck is so much more with the built motor, thanks again for the build.

It may be in a truck, but it is so much better from the 165 hp I had before the build. What a straight-forward build as well.

I have no complaints as to the street-ability, and I am hoping that Santa brings me a set of 4.56's for the rear end.

It will be fun all over again for the second time. THEN we will start to get serious with solving those traction issues
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Old 12-23-2008, 06:33 PM
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Snow vs coefficient of friction

I'm in the PNW also (Everett, Wa); what you need to do, is get the cheerleading squad from Snohomish High School (NOT the football team; the "ladies of the valley"), and pile them in your truck bed. I sure could have used them today. The old joke locally used to be, "why don't they let the Snohomish High School cheerleading squad on the field at halftime? Because it's too hard to get them to stop grazing". Sorry; I really don't even know what the squad looks like. The tires on my truck are W-I-D-E, and the snow just piles up in front/behind them and traction is near nil. And, I'm sure my stroker 305/334 makes no where near the power you have. Can't wait for this snow, and the dirt/rock they toss on the roads to be gone (they're not using sand).
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Old 12-23-2008, 09:51 PM
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Yup, the Great Pacific Northwest

No sand on the roads... just hunks of gravel for you guys too? I am guessing that perhaps sand is on the endangered list, or something.

Yup, I know what you mean about the cheerleaders. It reminds me of this joke I heard the other day; " what do you call a 180 lb Oregonian chick? Anorexic! "

I know what you mean about the tires, and I feel the pain. I am running 10 inch rims on the rear & the tires are a bit over 12in wide. Frost on the road gives me the hebe-jeebies
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