Cam Upgrade for my 408. Need some advice.

Heywodja said
I am looking for a few more ponies and am considering a cam change to a solid roller, in my LA 408 Stroker that will get me into the 510-520 hp range, and to flatten out the torque curve a little too. Really leaning towards a solid roller cam.

408 stroker LA, 10:1, trickflow heads, Super Victor intake with Edelbrock Proflo4 fuel injection. Howard’s hydraulic roller cam, photo attached of the specs for the cam. Edelbrock super victor intake, TTI step headers 1 5/8 to 1.75.

Cope low gear 904 RVMB w/ lockup and a PTC 11" converter.
8.75 w 3:55 Sure grip.
It pulls 16lbs of vacuum at idle and runs on pump gas @ sea level ..
497 torque and 448 hp. This was dyno’d with an airgap and some small tube headers.

Any advice will be greatly appreciated!!

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Based on the drop of your torque curve look at 500 hp 408 dyno graphs and you’ll notice a flat torque curve. suspect your 10-15* off in duration.@.050. Your air flow is not there after 4500. Racer Brown recommend an stx 20 for my 414 on a 107 lsa. Nothing against Howard's, good grinder, but you need some "dwell" with the 4” stroke to let the cylinder fill at rpm.