need help estimating the HP of my new engine?
Ok i just build a sbc 350 for my car and i need help with trying to figure how much HP it should have.
sbc 350 bore 40 over
Comp Cams 'Magnum 280H' Hydraulic Flat Tappet Camshaft
Fel Pro 1094 Shim Head Gasket Thickness .015''
125 dome pistons
edelbrock performer RPM intake
edelbrock 600 cfm carb
~375 at the crank maybe? more info on the heads would be helpful but guessing doesn't really mean much. results are what matter ;)
Assuming they are stock smogger heads with 1.94x1.50 valves my guess is 330-350ish. What is the casting numbers on the heads?
the head castings are 882
Not more than 329hp. On a good day. and no torque.
The 882 heads along with the 462624 heads are the worst of the worst SBC heads.
You will see a huge increase in performance just by getting better cylinder heads.
+80 hp 1 whole sec et reduction, big MPH increase in the 1/4 mile after ditching these dogs.
Until you upgrade the 882 heads this motor is going to be a disappointment.
with the 882 heads you are pretty much limited. I think you would be lucky if you were making 300hp. you have to remember that the heads you are using where used on 350 motors that where making 160hp. to double the hp that those heads were originally intended on making would seriously be doing something. I can't find the exact numbers but i dont think those heads where flowing more than around 180cfm @ .500" lift.
if you were willing to spend around 800.00 for a set of aftermarket vortec heads like the RHS pro torkers, I think your hp would go from around 280-300 up to around 350-360hp
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