Horsepower Estimates Anyone?

[Andrew]

Anyone out there want to critique a couple of 440's? I'm curious of what horsepower these motors are probably worth given obvious variables.

1- 78 block w/trw .150 in the hole, 516 heads ,1 7/8 headers, 3" exh, 6bbl, stamped steel rockers. compression ~8.75 to 1?
comp hyd flat cam:
rpm 2300-6500
valve timing .006 cntr angl 110 intake ctr line 106
duration 284/296 @.50" 240/246
valve lift .507/.510 lobe lift 338/340
timing @ .015 lift intake-36 btdc 68 abdc exh 82 bbdc 34 atdc


2- 69 block w/ J&E pistons, edelbrock rpm perf heads, 1 7/8 headers, 3" exh, 6bbl, comp steel roller rockers. compresion 10.25 to 1
comp solid flat cam:
rpm 3200-7000
valve timing .015 lobe ctr angle 110 intake cntr line 106
duration 290/298 @ .50" 252/260
valve lift .540/.558 lobe lift 361/373
timing @ .015 lift intake-39 btdc 71 abdc exh 83 bbdc 35 atdc

If anyone out there would like to take an educated guess of how different these 2 motors will perform, I'd love to here it.

 

[dantrap]

Hey Andrew, get yourself a desk top dyno program and crunch some numbers. It will be close, you have to make some general choices. I had an older copy but its not loaded on this machine or I would have run you some numbers. Your 1st combo would be pretty soft, but i bet you would enjoy your 2nd choice.

 

[daredevil]

1st combo is mismatch second sounds pretty good

 

[Meep-Meep]

:yes::yes::yes::yes:

1st is probably less HP than a stock Magnum engine.

 

[Andrew]

The first combo is what is in the car now, the second is one I am working on. I'm just wondering if it will be a noticable difference.

 

[69HEMICORONETR/TCONV]

The first combo is what is in the car now, the second is one I am working on. I'm just wondering if it will be a noticable difference.

The difference will be like Daylight and Darkness ! :yes: ...............You WILL notice it. :grin:

 

[Andrew]

I hope so! You guys have been a great help guiding me through my project.