Does anyone know approximately how much horsepower a 86 305 (LG) will produce with 9.6:1 compression pistons, World Chevy Torquer 58cc heads, 1.5 roller tip rockers, Hydraulic Roller Lifters w/ Crane Cam, Edelbrock Performer RPM manifold with holley 650 CFM carb?

best guesses and experiences appreciated.

 

Need the specs on the cam.

 

Probably gonna use CRA-119831

Lift
Intake 509
Exhaust 528

Duration
Intake 284
Exhaust 222

Lobe Sepration
112

 

Is that maybe supposed to be 214 on the intake, not 284?

If so..... nevermind. I found the specs.

Duration @ .050: 222°/230°
Lobe Separation: 112°
Gross Lift: .509''/.528''


Here's a pick of the graph..... just make sure you're gonna use headers with that cam. It's gonna need them to breath.

AJ

 

Thanks, by the way, what program are you using?

 

Sure. No problem.

It's Desktop Dyno 2000.

It works fairly well for what it's intended for. You have to realize that these are round about estimates for output, and every dyno pull on DD2000 is under "optimum" conditions.

AJ

 

Check your PM's.

 

Hey Mark, if you get a chance, I wouldn't mind a PM while you're at it

 

lol. You've got mail...

 

i cant believe u guys actually use the dyno2000 as basis for engine buildup.i have found that dyno2000 is very inaccurate.

dave

 

care to elaborate, just wonderin if you've compared it to actual dyno #s . Not , flaming you.

 

my engine that i built which was a small block chevy.i type in all parameters cam specs ,compression etc.dyno2000 said ill make 540 horse.......and the real true engine dyno numbers are 450 hp.


dave

 

Well, was that on an engine dyno or what? I'm sure you know what you're talking about, but I've seen people just not think before.

Cuz, dyno2000 shows flywheel HP,and if you ran the car on a dyno that was RWHP.

 

it was on the engine dyno..check my other post"just got back from the dyno"

 

Guess, I'll find out too, when I dyno mine this summer.

 

I can't believe u didn't read what I said about DD2000.

AJ