Drag time

That's damn nice dude! Send us the link to your youtube video!

If you improve your reaction time you could pick up .4 tenths ... nice time 11 seconds in a Pantera.

Ron

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If you improve your reaction time you could pick up .4 tenths ... nice time 11 seconds in a Pantera.

I thought the clock starts when the staging lights detect movement, not when the light goes green. That is why someone with a faster ET can still loose a race. Is my thinking off here???

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Originally posted by Z06 Pantera:

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If you improve your reaction time you could pick up .4 tenths ... nice time 11 seconds in a Pantera.

I thought the clock starts when the staging lights detect movement, not when the light goes green. That is why someone with a faster ET can still loose a race. Is my thinking off here???

True but I did a low rpm easy on the clutch start, and had horrible reaction time. If racing the winner crosses the line first. I crossed the line before the guy in the other lane, but at the 60' he was 1.1 seconds ahead. his 60' 1.7 seconds, and mine was 2.1. This is where the 4 tenths could be gained with good driving. This was the first time I ever ran, and like I said I didn't want to have to call a tow truck to get home, so I went home happy. I didn't have any idea how fast the car would run. It has a stock block, and it is naturally aspirated, and it is not bored or stroked.

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Originally posted by icole: I was in third gear at the trap. What RPM was I turning?

Assuming your -2 ZF is standard gearing and your rear tire diameter is near stock (26.5"), a trap speed of 126 mph in third gear corresponds to 7000 rpm. If the car was still pulling hard at 7krpm, it likely has a very stout solid cam.

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Please let me know if that is OK.

Please post. It's a remarkable time and would best many high dollar efforts in Panteras.

Best,
K

That is a fantastic time slip... Makes me wonder what my ol' car would run??... Nice job!

Here is the video. with my bad reaction I ended up finishing 2 hundredths ahead. The Nova had a full cage stripped interior with just a drivers seat.
http://www.youtube.com/user/Ul...=5#p/u/0/Lb1voZKzq5c

My understanding of it is .. there is a .500 of a second between the last amber .. when the reaction clock starts ticking and the green light .. with a .937 ... you could pick up .437 with a perfect reaction time ? Maybe I have mis understood ? Year back when bracketracing for about 8 years this was my mindset ... could be wrong.

Ron

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My understanding of it is .. there is a .500 of a second between the last amber .. when the reaction clock starts ticking and the green light .. with a .937 ... you could pick up .437 with a perfect reaction time ? Maybe I have mis understood ? Year back when bracketracing for about 8 years this was my mindset ... could be wrong.

So I agree that would net a better reaction time. My point was that I don't think reaction time and ET are connected. So the RT may work as you described, but what I am saying is the the ET clock doesn't start running until the sensors detect movement. This would eliminate RT from the equation.

Please, someone with knowledge on drag racing please chime in since I don't know for sure either...

Reaction time is not included. In real time I was 2/100 of a second ahead of the guy in the right lane at the end. His reaction time was .191s. If I heated my tires up, and revved a bit before letting the clutch out I could improve my 60ft E.T.
My ET was 11.488+.937=12.425 total.
The right lane Nova had 12.255+.191=12.446 total. The time slip says I won by .0214 seconds Reaction time is what a skilled racer can minimize 0 would be perfect negative is disqualified. Since this was my first ever mine was bad. One of the racers told me they usually go on the last yellow. I waited for green. I was .747 seconds behind when I rolled off the sensor starting the timer. Right lane reached 60' 1.789 after he left the sensor, and I reached it 2.066 seconds after I left the sensor. 1.022 seconds after he reached 60ft. I think this answers the above questions.

Wow. Thats fast.
I did 12.1 with a healthy 393 stroker.
My current car went through the traps in 4th with 3.77 gearing
Will

When is the best time to shift? I have a dyno sheetand my max hp is at 4500rpm and my max trq is at 5600 rpm
Will

Thanks icole... Good explanation!

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Originally posted by 4NHOTROD:
When is the best time to shift? I have a dyno sheetand my max hp is at 4500rpm and my max trq is at 5600 rpm
Will

I think you have those figures reversed. My mitsubishi Lancer Evolution makes 301 ft lbs at 3500 RPM 286 HP at 6700 RPM. At that point torque is only 225. THats from a dynojet AWD dyno.

THe best time to shift depends on your engine. Mine pulls hard starting at 4000 RPMs, and continues pulling until I get scared of breaking it and shift. I don't think my centerforce clutch can really hold the torque, because I could smell clutch after 3rd gear.

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Originally posted by icole:

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Originally posted by 4NHOTROD:
When is the best time to shift? I have a dyno sheetand my max hp is at 4500rpm and my max trq is at 5600 rpm
Will

I think you have those figures reversed. My mitsubishi Lancer Evolution makes 301 ft lbs at 3500 RPM 286 HP at 6700 RPM. At that point torque is only 225. THats from a dynojet AWD dyno.

Yes, correct max trq is at 4600 and max hp at 5600
Will

How much power and torque?
Ian

432 hp and 444 ft/lbs trq
Will

I assume you passed the 1/4 in 4th gear, or is 3.77 higher gearing than the stock 4.22?

Are those engine or chassis dyno results?

My dad thought this engine made 450 HP, but based on your power and 1/4 mile time it seems to make a bit more than that. Maybe I should take it to a dyno.

I took my 3 year old son to Atco today. Now he is running back and forth pretending he is a race car with lots of smoke. My first run in my Mitsubishi evo with mild bolt on mods was 14.171 @ 106.54 MPH. My second run was 13.848 @ 104.99 MPH, then it was too crowded for me to go again. I didn't burn my clutch or rev high to start, which hurt my time, but preserved my drive train. Motor trend did it in a stock Mitsubishi in 13.3 @ 103 MPH.
I also reduced my reaction time to .3 seconds on both runs. I am fairly confident that I could shave .5 seconds off my Pantera time, but I still don't want to break it, so we will see if I do another run.

A while ago, Gary Hall had Mike Cook take the brown GTS, "Rootbeer" I beleive and run it as hard as possible for the best 1/4 time he could get.

If I am not mistaken, the car ran a 9.9.

There is a picture of it somewhere at the line with the front wheels off of the ground.

The engine was a 357 Cleveland with a single Holley, A3 SVO heads and a hydraulic roller cam.

Mike told me that in order to get these times, they changed the ring gear from 4.22 to 5.37.

That would explain the ease of driving the car and launching that hard.

I am wondering if your cars previous owner changed the ring and pinion?

Considering it is something like a $3500 set now you are not likely to see many Panteras with it installed, BUT if you wanted the ultimate kick ass car, it is virtually a must.

Most owners these days would be looking to lower the rear ratio presumably so they can go over 200mph at 5000rpm at LeMans? With the Panteras first gear ratio lowering that will just make you have to slip first gear even more to launch it and by the time you get the engine into it's power range, the run is almost over.

I suspect you might have the 5.37 rear?

Incidentally, that would make the engine turn like it had 3.91 gears in 5th compared to a Mustang.

That would make cruising rpm too high for most of the P crowd I'm sure.

And no, I just have the stock 4.22 rear but wouldn't mind...

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I suspect you might have the 5.37 rear?

If he had that gear ratio he would have been turning 9000 rpm!!!

Remember, he said he crossed the line in 3rd...

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Originally posted by PanteraDoug:
A while ago, Gary Hall had Mike Cook take the brown GTS, "Rootbeer" .......The engine was a 357 Cleveland with a single Holley, A3 SVO heads and a hydraulic roller cam......Mike told me that in order to get these times, they changed the ring gear from 4.22 to 5.37.

Doug, did you mean solid roller? A hyrdo roller couldn't pull the Rs to effectively use that gear.

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Originally posted by Z06 Pantera: If he had that gear ratio he would have been turning 9000 rpm!!! Remember, he said he crossed the line in 3rd...

Indeed and he would be turning 4krpm at 69 mph in 5th gear cruise. Think we established in a different thread it likely has a stock geared -2 ZF based upon his 126 mph trap speed and ~7k rpm in 3rd gear.

IMO, drag racing a Pantera isn't all that meaningful. Sure, it's fun and an opportunity to legally and more safely flog the car in the absence of a road track but drag racing a Pantera is like road racing a pick up truck (oops, I forgot, NASCAR actually does that.... well kind-of-sort-of ). It's just not fit for purpose compared to a straight axle car with rear suspension set up to launch. The standing quarter is a very American thing and I understand it's sort of become the defacto performance comparison point for street cars, but 1/4 mile time is so dependent upon many on other factors than mere HP. Properly sorted cars of lesser HP routinely produce better times than other high HP cars and by the time you get a car set up to run low quarter times, they usually arent good for much else.

If you want to race, get your car sorted with proper safety features and out to a road track and enjoy it for what it is more suited to do.....or, drive as a GT road car as is was specifically intended.

Best,
K

I'd have to ask Mike but it was 15 years ago and I thought he mentioned hydraulic roller?
Personally I'd go with just a plain solid lifter. For me they are less problematic then roller lifter cams.
Granted hydraulic rollers have come a long way since my racing days but the solids are still a bear.

As far as whether it was 9,000rpms across the line...a 9 is just a 6 upside down?

What I was referring too with the 5.37 (or might be a 5.35?) is the ease with which the car will launch. That seemed to be expressed also in the description of the run?

I do know Mike said Gary wanted to go under 10 and just changing the rear accomplished that. He also said that it wasn't his car (Mike) and he was concerned with breaking it.

Hall said so what if it breaks so it was run as flat out as flat out could be. He never said if he crinkled the body though?

As far as lesser cars running better 1/4 times, yes, absolutely. 2v station wagons can run in the 10s. Sure.

With the advent of the 6 speed trans it makes it possible to have both your cake and eat it too though. 1/4 mile time is just the statement of the brutality of the acceleration.

To me it's just a matter of taste what you want but if you want to portray yourself as a stud, you better be able to walk the walk, not just look hot in your Gucci loafers and designer jeans...or your prancing horse. LOL!

Yes I am going auto-crossing next spring. It was just fun to take a stock looking street car and outperform the cars that came in on trailers with drag slicks cages and stripped interiors. The trans is a stock -2.