Short Block Kit

[Indycars]

Can you pull together in one post the needed info for a DynoSim5 simulation? Try to get as
much as you can, although I can guess at some things like header tube diameter.

Bore:
Stroke:
Cylinder Head Flow Numbers:
Valve Diameter:
Camshaft Cam Card: I already have this.
Combustion Chamber Size:
Compression Ratio:
Intake Manifold:
Header Tube Size:

 

[Lmus10]

Bore: 4.04
Stroke: 3.75
Cylinder Head Flow Numbers: Intake 262cfm @ .500" Lift/28" Exhaust 175cfm @ .600" Lift/28" From Dart's website (200cc runners)
Valve Diameter: 2.02 I / 1.60 E
Camshaft Cam Card: I already have this.
Combustion Chamber Size: 64cc
Compression Ratio: According to Grumpy close to 12.5:1
Intake Manifold: I have a Holley Single. Grumpy suggested a Super Victor.
Header Tube Size 1-3/4"

 

[Indycars]

.
I didn't remember but I have done some other simulations before on an engine for you.

For the flow numbers I used what Grumpy gave me for the Dart Iron Eagle with the new PN:25534446 .
When I need flow numbers it's needs to cover .200, .300, .400, .500, .600 ..... up to where they
essentially stop flowing any more, no matter the lift.




.

 

[Grumpy]

RICK?
can you use all the same info except for the heads, super impost the same dyno with the vortec 215cc head result?


https://paceperformance.com/i-62556...haust-runner-65cc-chamber-up-to-530-lift.html



https://www.summitracing.com/parts/edl-2913/overview/
edl intake #2913 (vortec SBC head design)

also with the larger vortec heads (yes it would require a different single plane intake design
Large-Port 215cc Vortec Cylinder Head Flow

GM part NUMBER 25534431 (disc)
25534446 is the new improved version the older numbers been discontinued

https://paceperformance.com/i-62556...haust-runner-65cc-chamber-up-to-530-lift.html

25534446 is the new improved version the older numbers been discontinued
INTAKE EXHAUST
Lift Volume Lift Volume
0.200 128.6 0.200 100.8
0.300 188.4 0.300 138.6
0.400 234.8 0.400 154.4
0.500 257.2 0.500 152.5
0.600 263.2 0.600 163.8
0.700 269.1 0.700 167.0
PRODUCT DESCRIPTION

 

[Indycars]

If you look at the numbers, I think that's what I used. I thought that was Dart Iron Eagle heads
with the new PN in your PM. Too many numbers coming at me all at once I suppose.

 

[Grumpy]

RICK!....I could very easily see that happening..too anyone

heres the dart 200cc flow numbers

200cc Runner- Dart Iron Eagle Platinum Heads- Cast Iron 64cc chamber

 

[Maniacmechanic1]

RICK!....I could very easily see that happening..too anyone

heres the dart 200cc flow numbers

200cc Runner- Dart Iron Eagle Platinum Heads- Cast Iron 64cc chamber

The Dart Platinum heads appear to have an improved E/I ratio for drag racing Grumpy.

 

[Maniacmechanic1]

Yes. Average E/I ratio .300 - .600 lift is .75 to 1.
Race ready heads the Platinum Darts.
.80 be better race CFM Carb and big tube headers needed.

Driving again.

 

[Maniacmechanic1]

.
I didn't remember but I have done some other simulations before on an engine for you.

For the flow numbers I used what Grumpy gave me for the Dart Iron Eagle with the new PN:25534446 .
When I need flow numbers it's needs to cover .200, .300, .400, .500, .600 ..... up to where they
essentially stop flowing any more, no matter the lift.

View attachment 9509
View attachment 9510
View attachment 9511
.

Torque curve is nice for a small tire S10.
Launch easy and without blowing the rear tires off spinning wild.

 

[Indycars]

.
Ok, I think I got all my file names figured out and changed.

 

[Maniacmechanic1]

I learned a long time ago well balanced E/I Ratios cylinder heads just plain work.
Engines are easy to Street & Race Tune.
Explosive Power all around.

Grumpy found a nice Cam.
I say Run it.

To get Crazy Hp need to Rev much higher and Titanium Valves , Titanium Valvespring Retainers, Titanium locks needed.
Shortcut and drop a valve .

Or 434 SBC Needed with 18x Brodix or 15 degree canfields.
Custom made headers needed.

Nice combo on a moderate budget.

 

[Lmus10]

Thank you for the Dyno Sim and for sharing your knowledge.

 

[Grumpy]

were all glad to help each other out when we have the chance
keep in mind , the better quality software dynos give a decent indication of potential, but as they say,
"garbage info in+ garbage info out"

and the care taken during the engine assembly process,
the mods and tweaks you do to parts,
(like porting and valve job, clearances and parts quality)
and your ability to tune correctly could easily result in,
a plus or minus, 10% or larger change
careful clearancing and component assembly, selecting good high quality, well matched components,
modifying parts if required,and careful port work can all boost the potential power curve.
carefully done, intake manifold, and cylinder head port mods, and well tuned headers ,
with a low restriction exhaust, behind them, could easily boost the results 50 hp-80 hp plus hp.