Dyno Numbers

forgot, what is done to your motor?

Very nice numbers Will. But we'll still kick your EFI'n butt all the way back to Ontario.

Well you might. I'll just lag behind until you hairy big-chested lads blow your engines one by one and then I'll cruise past the carnage to an easy finish.

Not bad numbers though. Figure about 50% loss through the drivetrain (I saw that you left your parking brakes on...) and that's about 865 HP at the crank! Not bad!

Mark

quote:

forgot, what is done to your motor?

393 Cleve w worked iron CC heads, roller rockers (Harland?),hydraulic roller cam is not that big (Crane HR-216), 10-1 comp,Quella IR intake, FAST XFI, MSD dist and ignition
Will

Will,
I'm relatively new to this forum so don't want to hurt nobody but....last year, on your way back home from Québec, you said that you still has some ¨poutine cheese¨in your tire threads. That's make me think that, may be, you're not driving fast enough....make me think that my grand'ma probably drive faster than you....you just proove us that's not your car....

Salut Will.

Serge

quote:

Originally posted by Brutus:

Will ... last year, on your way back home from Québec, you said that you still has some ¨poutine cheese¨in your tire treads. That's make me think that, maybe, you're not driving fast enough....make me think that my grand'ma probably drive faster than you....you just prove us that's not your car ... Serge

Serge,

It's not really Will's fault. He has VERY small feet and so it is hard for him to press the accelerator pedal very hard. Fortunately when the car was on the Dyno it was a big burly guy pushing it.


Mark

Those are some impressive numbers....I just HOPE I get that kind of power out of the 393C I'm building now. How was the XFI to work with? I've sent my Weiand Xcellerator 2V off to have converted to port injection and am waiting for it to come back. I'm also waiting for a Rollmaster CS3130 to make it's way to the US. Those two things are holding up the completion of my motor.

Thanks,

Chance Dorsey

You'll need to be familiar with tuning efi or find someone who is proficient with tuning. Here in Toronto, a tuner is $150-$200/hr. It gets pretty costly, real quick.
Will

quote:

I just HOPE I get that kind of power out of the 393C I'm building now.

I've had 2 393 Cleve's now that produced near identical power. There's no magic to it. There are many recipes for quality builds on this forum and others.. Both the motors I have are totally streetable and will kick the asses of any poutine eatin' frenchie around
Will

lol, nice setup Will. How do you like the XFI? I'm putting on the previous gen FAST Classic on my car hopefully within the next month.

It's a great system. You'll just need alot of time to fine tune it.
Will

quote:

Originally posted by 4NHOTROD:
It's a great system. You'll just need alot of time to fine tune it.
Will

I put the FAST EZ EFI system on my rig, and am happy with it so far. I wrestled with an old Holley programmable system years ago on another project car, and when I saw that FAST had a system with a wide band O2 sensor and learning algorithm, I was sold.

So much easier to let the computer learn the target A/F ratios you set, rather than you adjusting the numbers.

those are some really fun numbers. I bet it pulls real hard.

G'day Will,

My name's Cam, I'm new to this site. I just had to get on here and ask you more about your engine if you don't mind. I'm building a couple of street-only 351 Clevelands here in Oz and I'll be fitting the Crane HR-216 to one of them. I can't believe you got so much power out of, what looks like, a baby cam on paper. Are you really running the HR-216? At what RPM did your motor produce peak BHP? I'm guessing they're 4V closed chambers? Any rough flow numbers etc. Assuming a drive train loss is quite low on the ZF (probably around 15%-17%) you're up around 500BHP! Awesome!
Cheers Cam

The big difference is he's running an independent runner EFI system, not a single 4 barrel carb. You won't get near those numbers with a single four barrel. Dan Jones

quote:

My name's Cam, I'm new to this site. I just had to get on here and ask you more about your engine if you don't mind. I'm building a couple of street-only 351 Clevelands here in Oz and I'll be fitting the Crane HR-216 to one of them. I can't believe you got so much power out of, what looks like, a baby cam on paper. Are you really running the HR-216? At what RPM did your motor produce peak BHP? I'm guessing they're 4V closed chambers? Any rough flow numbers etc. Assuming a drive train loss is quite low on the ZF (probably around 15%-17%) you're up around 500BHP! Awesome!

ZF loss is roughly 22% where-as a transmission loss is usually 16%.
My current motor was built by the previous owner and the cam spec was given to me.It is a small cam and my engine builder said there was no way I could get 500 hp out of that cam but I have the receipt with the part #.
The heads are well worked 4V closed chamber heads. I don't have flow #'s.
Peak HP is at 4600. Great for the street. Both my motors built the most power at that range. Motors go boom at high rpm's.
Will

Thanks for the info Will, Cheers.

> Peak HP is at 4600.

I was unable to read the legend on the graph but do you mean peak HP at
6400 RPM or peak torque at 4600 RPM.? 500 HP at 4600 RPM would be over
570 ft-lbs at that RPM and imply even more torque at a lower RPM.

> Great for the street. Both my motors built the most power at that range.
> Motors go boom at high rpm's.

Yes. Also, remember you generally shift around 500 RPM above power peak
for best average acceleration (it is the area under the curve that matters,
not peak values) so design your engine to peak 500 RPM below where you want
to shift. The best way is to calculate the RPM band between shifts and
concentrate the power there (e.g. when shifting at 6500 RPM, the engine
falls back to 4000 RPM on the shift into the next higher gear).

> ZF loss is roughly 22%

I see people claiming that but 22% of 500 HP is 110 HP. That's the power
of a small 4 cylinder engine, one that will move an entire car at over
100 MPH. If your ZF takes a small 4 cylinder engine just to spin it,
something is very wrong and I want to see the transaxle cooler you are
using to dissipate that 110 HP. There may be a 22% difference between
the same engine on a chassis dyno and an engine dyno but the transaxle
loss is only a fraction of that.

Dan Jones