Thread: Dyno Combo Results

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Originally Posted by kool

Hi Guys/Gals.
I've been working on a 355 engine and don't know anyone with a dynosim 5, apparently they are pretty accurate.
Would someone be able to run my combo and see what comes up?
350 + .030"
Hyper d-cup piston with .018" dish
Edelbrock E-Tec 170 heads (1.94 intake/ 1.55 exh.)
64 cc- should be 9.0:1
Howard Cam -hyd. retro roller
.525 int/.532 exh.- dur@.050 226/234 -LSA 108
1.5 roller rockers
Edel. airgap intake
Holley 650 dbl. pump
1-5/8" headers
Thats about it, going to be for the street, nothing outrageous.
Wanted something with bottom end to play with.
Thanks, if anyone could help me out.

Couple of things to fix first.
Pistons: If you're talking about KB D-cups, they are 18cc (eighteen cubic centimeters), not 0.018" (eighteen thousandths of an inch).
Howards cam: I can't find this grind. I need to make sure on the LSA in order to figure the valve timing figures to enter into the DynoSim. Most of Howard's cams are ground on a 112 LSA, not 108. I have not seen a Howard's retrofit for a small block with the figures you have shown here. Where did they come from? Can you give me a link?
Carburetor: Why the double pumper? Are you planning to use a loose torque converter? 3000+ stall? Car would make better fuel mileage with a vacuum secondaries carb, would make same top end hp and work better if you're using a converter tighter than 3000.
Intake manifold: Car will make more useable power with a taller intake manifold such as the Edelbrock RPM AirGap Vortec #7516 in the range of 1500-6000.
Do you have any of the parts bought yet?