what will my old worn out eheaded engine make NA
 

Have a date set to dyno on april 2.

Changes
Ports are .220 wider pretty much all the way
slight increase in valve size to 2.275 from 2.25
intake valve switched to ti
intake swap from a real nice victor to an even nicer massaged bop. Much larger
maybe .4 to .5 of a point more compression
belt drive

The rest is the same as last year what say you?



BTW a note to johnta1 and Stan....please try and think through your responses before you post. I know its hard and you really want me to slow down or somehow fail. But to keep this thread clean understand in advance that 1300,1200,1100 and likely 1050hp are not likely lifting the valve .780 with a bracket set up. Additionally it will be tempting to say 850, but that will only make you look bad. If you truly are interested and have additional questions I will respectfully answer them. If not flame away.

Same dyno as last yr? Last yrs dyno # and peak rpm? Track reflected Wht hp number? I already have a guess :)

Old and worn out?? What did you do take it to Dragweek! LOL

1100+ using Johnta1 and Stan's methods :)

My guess is 1025 HP.

EHTTFMF!

WOW, mike your camshaft in your engine is way BIGGER then my BRACKET RACE cam! Another high dollar engine.


GTO George

No. I'm going to BES. The dyno session last year was called due to issues. basically we could not get the fuel curve where it needed to be. Where I dynoed last year they are an efi shop so i had to bring my pump and regulator. turned out it was my regulator that was not up to par. when i switched the regulator in the car it picked up 2 tenths. Anyway the we stopped at 971 @7600 peak.

through a reliable source im told tony's dyno and scorpion racings dyno are VERY close. when i dynoed at scorpion last year it made 968 on the first hit with some room in the tune up but not 1000hp worth of room. We felt that it would stop at 988-995. and the car slide rules at 1000hp in 2000ft air. using other calculators it shows 1038 which is pure nonsense. I'm pretty comfortable saying it was VERY close to 1000 if not 1k.

That all said there are many that claim the BES dyno 40 tight. who knows. I'm going there for the expertise on the bes staff and not the highest number printed on paper possible. If I were I would seek out a known loose dyno.

Did i forget to include you in the disclaimer and hurt your feelings? LOL!

FYI George that big thingy with 2 dominators on it sitting on top of your engine is an AIR COMPRESSOR. That is the thingy that makes your HP, which is not much if at all more than i made last year. But thanks for your useful comment anyway.

Mike
I wish you great success on your rebuild.

Stan

Since you do not post with your real name I do not know if you have my software or not. I would guess NOT. So how would you know what my method is? :confused: Help me out here and tell me what VE at what RPM should I use? Or what should I use for the mass air flow at what inlet temperature and barometric pressure? Thanks for the needed input data.

Stan

thank you hopefully its not a turd

Do not know about the "Tight Deal" Dyno but Tony told me when I was there that the newer version of the Superflow Dyno they now use reads about 40 HP lower vs the old version Superflow Dyno. (My visit was a couple of years ago).

That being said, what ever the number is that Tony's Dyno prints, I would say is a good number (in the dyno racing game).

I will say 1064 HP.

Tom Vaught

ps Roots style Superchargers are "Displacement" devices. They displace a given volume per revolution. So they are basically a "Governor" for airflow into the engine.
You run a supercharger of a given displacement per revolution at a given speed and depending on the density of the outside air, you get a given mass flow (horsepower).
As long as George never changes the blower rpm, the mass flow will stay in a given range. So the reported Boost Number means little vs the HP output.
Pressure Ratio (Boost) will change vs the engine displacement the supercharger is attached to but the mass flow into the engine sets the HP potential.

1000-1050 hp should be reasonable. It's hard to say what it will make without more details on the intake areas. The bigger intake valve should help when saddled with the .780" lift cam. Good luck man!

1018-1021

I'm guessing 1030 @ 8100 rpm that intake is going to move it up at least that much.

I've got a $100 says George takes that extra lung off his car and puts on a single four barrel on with a Victor, Mike would skull drag him down the track!

Just sayn

Good luck Mike! You know my predication. :)

Other posts indicate you may be trying to make sure to exceed 1000... got a feelin you'll cover that... for now I think you stay under 1030. This dyno session steers you to what changes are needed to better KK's ol' 499 track power. More interesting to me will be how it reacts to new intake... and carries power.

BW's wag method says 1015 +/- 1.5% corrected if the dyno isnt on top of a mountain in the middle of a thunderstorm.

.780 is net lift?? You bein stingy or Scott provin his stuff? I like the idea.

1051

Good luck Mike, as long as you're happy its all good!