Thread: 500 hp/550 lb-ft from a 390?

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Originally Posted by Flatheadwillie

I know this forum is older than dirt...but I am another newb building a 390...just wondering why that C8AX-6250-C cam was never mentioned

After re-factoring the flow of the Edelbrock heads, based on Barry's experience with hard dyno pulls with these motors, I ran a Sim on this cam. Best results were achieved with the cam retarded 4 degrees on these 0.050" marks....
IO (-5)
IC (45)
EO (52
EC (-2)
RPM....HP....TQ
2000...166...436
2500...208...436
3000...263...460
3500...330...495
4000...397...521
4500...447...521
5000...492...517
5500...505...482
6000...485...425
Peak volumetric efficiency 101.8% @5000
Peak BMEP 198.8 lbs @4500