#2241 on the Dyno

Passed a road Construction area on my way. Crap....

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Good numbers man, congrats.
What lump you running in there?

Engine Build Sheet:

4-bolt main block - 0.020"
408 Scat Stroker kit
Probe dished pistons
Scat I beam rods
Lunati hyd. roller cam #20320712
Lunati hyd. roller lifters
Scorpion 7/16" roller rockers
TFS Powerport 225 CNC ported heads, 60cc chambers
TFS Trackheat Intake 3000-6800 rpm
Mallory Unilite
Melling blueprinted oilpump
Holley 750 Ultra DP
Cloyes Double Rollerchain
Pioneer Balancer
Tim Meyer cambearings
Aviaid 9qt. oilpan
Wilkingson headers

Video (Including backfire )

http://youtu.be/w5WHR-MIwqI

must be scary in a 71 Pantera... no ?

I think it handles very well, even with 600 HP. But You have to handle it with care.....

Very impressive!!! I am in the middle of my own 393 build, this just makes me more excited

quote:

Originally posted by danishcarnut:
Video (Including backfire )

http://youtu.be/w5WHR-MIwqI

You have so much to look forward for, Chris. A stroker makes so much more torque than a standard Cleveland. I really don't care about the horsepower - For me it's the torque !

Hello Heine
what's your exhaust system please ?

This is a preview of coming attractions, The only difference in my build is 393c.i. and .
Ford racing C-302-b heads and a Comp cam # 32-651-8 and 180 headers by Dan Lemon, all the other components are about the same.

quote:

Originally posted by danishcarnut:
You have so much to look forward for, Chris. A stroker makes so much more torque than a standard Cleveland. I really don't care about the horsepower - For me it's the torque !

quote:

Originally posted by "72 GTS:


Hello Heine
what's your exhaust system please ?

It's a complete set from Wilkingson

Great numbers. You'll have fun!

quote:

Originally posted by danishcarnut:
.

Heine,

I need a little help interpreting the data. First I did a double-take because of the rpm where the power and torque curved crossed. Then I realized the units of measure were different than I was accustomed. Is HK Swedish horsepower and is this very nearly 1 US HP? Correct? On torque, if I convert N-M to Ft-lbs I get 578 ft-lbs which looks about right if 1HK ~= 1HP, then the power and torque values are the same at about 5250 rpm.

Now what I don’t quite fully understand is where the power level is being measured or inferred. The car is shown on a chassis dyno. Is the indicated power level at the wheels or crank? 618 HP with that cam, 750 carb, and stock Pantera mufflers (if this is so) seems like the power level is being projected at the flywheel or BHP. Is that so? If so what is the assumption about power loss through the drive train?

Best Regards,
Kelly

Kelly,

1 HK is equal to 1 HP, and 784 Nm is as You say 578 lb-ft. So 618 HP and 578 lb-ft

Mufflers is the GTS style from Wilkinson, incl. the headers. So not stock.

HP is measured/calculated on the cranshaft.
The machine is VERY complicated. They do some testruns, where they spin the engine up to 3000 rpm’s a few times, and then let off the throttle with the gearshifter in neutral. Then it measures how much it needs to drive the wheels, transmission etc. for the later calculation. It should be very precise, they say ?

We did some other, unmodified, cars that day, and according to the original data, it was very precise.

A Lancia Thema 8-32: 205 HP by the book, and 202 HP in the Dyno.

A Ford Consul 2.3: 108 HP by the book, and 101 HP in the Dyno

Just for the fun of it we did run a brand new Kia, and it showed 5 HP more than the book, though.

More from that day here: http://www.carnut.dk/rulle-dag-for-drengerove/

(In Danish....)

Nice numbers for flywheel/BHP for that build and makes sense but there must be an assumption for a chassis dyno to calculate BHP. Conventional wisdom says circa 20% loss through drivetrain so that would mean your mill is getting ~494HP to the ground. Very nice.

Nice to see so many American cars on the dyno in Denmark.

Best,
K

quote:

Originally posted by Panterror:
Nice numbers for flywheel/BHP for that build and makes sense but there must be an assumption for a chassis dyno to calculate BHP. Conventional wisdom says circa 20% loss through drivetrain so that would mean your mill is getting ~494HP to the ground. Very nice.

Nice to see so many American cars on the dyno in Denmark.

Best,
K

I don't know how exact it calculates the flywheel HP. But they said that it was very precice. I don't know
But I like the way the car drives now, compared to the original engine. I always thought that it needed some more power - Now it got it

Yes, there's alot of US cars in Denmark. This "meet up" planned few days before, so not many showed up. We will try again next spring.

Great numbers! Must go very well indeed. I was sad to see the accuracy discrepancy with the Kia though. Five HP more is like doubling the book HP.