so i have a 351w that im starting to build so far i have:
Isky Cam 280 Mega Hydraulic cam .517 lift 280 Duration
Scat 9000 crankshaft
Victor Jr Intake
Holley 750cfm Double pumper
Hooker Competition Headers
Speed Pro 60 over pistons

about how much horse power would i be doing?

 

First...welcome to the boards...This seems to be your first post..maybe post up an intro or hello thread in the new member section.

Next, with your setup, its tough to say what kind of horsepower you are doing with whats listed above. Im guessing with the 393 in the title its a stroker motor ? There wasnt a mention of which rods you are using....also, which heads..stock ?

Id say your in the 400-ish range, for the moment...again, there are still a bunch of factors missing...

 

Cylinder heads and compression are going to be the big factors in what horsepower you are going to make. Espescially the cylinder heads. They gotta breath to make power.

 

im using stock rods with procomp heads having 60cc chambers and 210 intake port...would that be any help

 

its a stroker ofcoarse 393w+

 

I would be happy to run the numbers for you, but I need a few things. Those cam specs do not line up with a part number on Isky's website. What is the part number of grind number of the cam? What ratio rockers are you using? I do not know anything about "pro com heads" other than they are often an "ebay deal" that does not have a very good reputation. Regardless, if you can tell me what valve size are you using and what are the flow numbers per valve lift for those heads I can run the numbers?

 

Although they are aluminum, they don't flow much at all. Just above stock. Probably won't make a ton of power, but will have a good vac signal.

 

procomps will blow a stock head out of the water but they are cheap chinese copies of vic jr heads, some people have no problems and some have major problems with them.

 

URBAN COWBOY...thanx...
here is some more info...

Isky Cam...280-Mega Hydraulic Part# 381281
1.6 rockers
2.02 valve size

Flow
Intake Flow Exhaust Flow
.100 57.4 .100 55.1
.200 101.5 .200 91.1
.300 146.7 .300 131.0
.400 194.1 .400 160.0
.500 233.4 .500 170.3
.600 255.8 .600 173.8
.700 262.0 .700 177.0