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Jeff Kinsler · 10-06-2002, 02:46 PM

Went to cecil county yesterday afternoon. Drove my STREET CAR to the track and ran 4 times.

1st run: 10.509 @ 128.62
The new converter didnt like leaving at 1,500 RPM. 1.529 sixty foot. Pulled 103.37 at half track.
2nd run: 10478 @ 128.65
Left at 2000 rpm and liked it better and went 1.51 sixty foot.
3rd run:10.59 @ 128.87
Was lean, jetted up. Left at 2400 spun bad went towards wall,lifted and still went more MPH.
4th run:10.47 @ 129.21. Dropped timing down 2 degrees to 33 total and picked up MPH. Sixty foot was still 1.52. Should be a little better , but not complaining at all.
I was hoping for a 10.50 after it was tuned in completely and on a nice cool night. So starting out with that I was extremely happy. What really impressed me was from half track on the thing pulled like a freight train, and I didnt think that RPM intake would do that. Im glad i stuck with the RPM intake and not changed to a single plane. Thats a pretty damn good dual plane intake. Maybe I will try a warrior before winter but Im happy with whats on it. After the second run at the end of the track I pulled a plug and put another one in so i could go back to the pits to check the one i pulled out and the car wouldnt start. Got towed back. No spark. Damn MSD crapped out on me. Went home and pulled one of my bother in laws camaro thats in my garage. Hooked his up and fired right up. Crazy how stuff like that happens.
Now some more tuning and then the 150 shot and see what happens. Should be in the 9's now.

68 Firebird 468
#16 D-Ports w RPM intake

Jeff Kinsler · 10-13-2002, 06:16 PM

Bailey, lets switch, Ill take your motor and you take mine. [img]/infopop/emoticons/icon_wink.gif[/img] . I dont think even on the spray that mine will keep up with you. Maybe with a 300 or 400 shot, but that would only be one run until it blew up [img]/infopop/emoticons/icon_eek.gif[/img]. Going to spray it after one more time at the track to do some more tuning. Might try warrior first.
later

68 Firebird 468
#16 D-Ports w RPM intake
Street Car
10.47 @ 129.21
150 shot soon

Steve C. · 10-08-2002, 07:42 PM

That's it. The torque converter.
Dyno the motor,look at the torque characteristics and have a custom converter made specificaly for your combination.

"Knowing where the engine produces peak torque and the relative "shape" of the curve over the planned range of rpm provides further important input to converter choice and characteristics."
Jim McFarland

'Damn right it's a street car'

Half-Inch Stud · 10-09-2002, 10:12 AM

Suppose the real valve is matching the Engine's torque curve to the converter's torque transfer profile vs RPM...very,very big value.

Need the Transmission to best couple to the converter. Think this basket of worms gets worse since the converter's primary value is at low driveshaft RPMs.

Geez, with a Trans-friendly dyno, you could theretically optimize your 1/4 mile run on the dyno curve sheet for most area under the curve.

Sooo, I would boldy suggest that present engine-only dyno-runs only helps directly with mid-to-top of the track. Subtle, casual or accidental help with 60foot to 660foot.

H.I. Stud

"11.00/123MPH/1.50 60foot/29.5"/4.10:1/10"/472 #48/Flat HYD/DualQuad/Wenzler/3250Lbs
12.00/112MPH/1.61 60foot/26"/3.31:1/10"/472 #48/FlatHYD/Q-Jet/Torker/3650Lbs"

ponchopete · 10-06-2002, 04:04 PM

Congratulations! Your car is really flying! That thing's going to be a monster on the bottle. [img]/infopop/emoticons/icon_eek.gif[/img]

"My car would be fast if it had an engine, transmission, and rear axle in it."

GoatRider · 10-07-2002, 10:06 AM

That sounds like one healthy combo you got there. I would be interested to hear more about your trans and convertor, and what it is really like to drive on the street! 12 to 1 static compression??? What fuel do you use?

Tim Corcoran · 10-06-2002, 05:10 PM

Bad Bird,

It would be nice if you could tell us a little about your combo. First off your race weight, your carb, compression, cam type and specs, headers, rear end ratio, tire size. Please?

Tim C

65 LeMans 11.06@121

Half-Inch Stud · 10-09-2002, 10:03 AM

AHAH: here's a heartbreaker:

how about a DYNO that includes the Transmission output shaft?

Hmmm, engine, clutch/converter, Trans holding drive, some windage.

Inquiring minds wanna know [img]/infopop/emoticons/icon_mad.gif[/img]
H.I. Stud

"11.00/123MPH/1.50 60foot/29.5"/4.10:1/10"/472 #48/Flat HYD/DualQuad/Wenzler/3250Lbs
12.00/112MPH/1.61 60foot/26"/3.31:1/10"/472 #48/FlatHYD/Q-Jet/Torker/3650Lbs"

GONZO · 10-10-2002, 04:14 PM

check out this website, if just for kicks anyway

http://www.land-and-sea.com/rotary-s...shaft-dyno.htm

http://www.kingofgtos.com/index.htm

Steve C. · 10-08-2002, 06:48 AM

Badbird- FWIW, the engine dyno we used back then was known to be generous.
Interesting though, if I remember correctly the Performance Trends Engine Analyzer program suggests it made more than what the dyno said.

(peak numbers are nice but I'm just as interested where the torque and power curve are when we dyno a motor)

[This message was edited by Steve Coombes on October 08, 2002 at 10:16 AM.]

ta406pont · 10-06-2002, 03:28 PM

Very Nice [img]/infopop/emoticons/icon_biggrin.gif[/img]

" If I ain't Loggin' Hard then I'm Drivin Hard "

Jeff Kinsler · 10-06-2002, 02:46 PM

Went to cecil county yesterday afternoon. Drove my STREET CAR to the track and ran 4 times.

1st run: 10.509 @ 128.62
The new converter didnt like leaving at 1,500 RPM. 1.529 sixty foot. Pulled 103.37 at half track.
2nd run: 10478 @ 128.65
Left at 2000 rpm and liked it better and went 1.51 sixty foot.
3rd run:10.59 @ 128.87
Was lean, jetted up. Left at 2400 spun bad went towards wall,lifted and still went more MPH.
4th run:10.47 @ 129.21. Dropped timing down 2 degrees to 33 total and picked up MPH. Sixty foot was still 1.52. Should be a little better , but not complaining at all.
I was hoping for a 10.50 after it was tuned in completely and on a nice cool night. So starting out with that I was extremely happy. What really impressed me was from half track on the thing pulled like a freight train, and I didnt think that RPM intake would do that. Im glad i stuck with the RPM intake and not changed to a single plane. Thats a pretty damn good dual plane intake. Maybe I will try a warrior before winter but Im happy with whats on it. After the second run at the end of the track I pulled a plug and put another one in so i could go back to the pits to check the one i pulled out and the car wouldnt start. Got towed back. No spark. Damn MSD crapped out on me. Went home and pulled one of my bother in laws camaro thats in my garage. Hooked his up and fired right up. Crazy how stuff like that happens.
Now some more tuning and then the 150 shot and see what happens. Should be in the 9's now.

68 Firebird 468
#16 D-Ports w RPM intake

johnta1 · 10-09-2002, 07:27 AM

462 CI

400 HP?
[img]/infopop/emoticons/icon_cool.gif[/img]

johnta1
Pontiac Power RULES !!!
www.wallaceracing.com

Tim Corcoran · 10-07-2002, 11:44 AM

Badbird,

Thanks for sending the specs. Very nice machine, is that a comp cam?

Tim C

65 LeMans 11.06@121

mmm · 10-07-2002, 10:30 AM

Hot Damn!
If my 68 was that wicked, I would be in jail
for certain- cops just love my car, ya know.

Half-Inch Stud · 10-07-2002, 10:45 AM

Badbird68; nice work!

Excellent choice in gears and tire.

I hope to do that performance with a blower [img]/infopop/emoticons/icon_frown.gif[/img]

H.I. Stud

"11.00/123MPH/1.50 60foot/29.5"/4.10:1/10"/472 #48/Flat HYD/DualQuad/Wenzler/3250Lbs
12.00/112MPH/1.61 60foot/26"/3.31:1/10"/472 #48/FlatHYD/Q-Jet/Torker/3650Lbs"

John Bailey (GTOKID) · 10-11-2002, 01:58 AM

562 HP on speed power I told you mid ten;s are eazy!!! I should have saved 10k and built your combo and got a bottle would have run as well as what mine will, and be street driven!!!! [img]/infopop/emoticons/icon_mad.gif[/img]

johnta1 · 10-09-2002, 11:03 AM

Sure it would help quite a bit.Optimizing the torque converter to the engine parameters makes a world of difference in the performance of the car.With the same amount of torque and hp from the engine,there is a large difference in ET with the wrong converter setup.

The problem with most dynos are that they are basically steady state.They hold steady at a certain rpm range,take a reading then go to next.
With the tranny hooked up you would basically be bypassing the converter at a steady reading.
Thereby negating the torgue multiplication of the converter.
[img]/infopop/emoticons/icon_cool.gif[/img]

johnta1
Pontiac Power RULES !!!
www.wallaceracing.com

Jeff Kinsler · 10-08-2002, 02:47 PM

Yeah, your right. Peak h.p and torque arent always directly related to better e.t's. I had a friend of mine pick up 35 rear wheel horsepower but lost e.t at the track. His converter had alot to do with that.

68 Firebird 468
#16 D-Ports w RPM intake
Street Car
10.47 @ 129.21
150 shot soon

Nickv · 10-06-2002, 04:58 PM

Damn!!!! I wish my car went that fast. Someday it will, but not today. [img]/infopop/emoticons/icon_smile.gif[/img]

I currently turn 12.5 hope to hit 11's with 150 shot of Nitrous when it's finally hooked up and tested.

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