Thread: swapin again...350 to 406....

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Holy bat dung Batman, where do you guys get these cam timing figures from? TOO MUCH CAM.

Here's a dyno combo from Air Flow Research that uses more static compression ratio than you are planning, but less cam and it makes sense. Call up AFR while you're ordering the heads and get the details on this build. By the way, have them drill for the steam holes before they ship them to you.

RPM Torque H.P.
2500 463 220
3000 468 267
3500 457 304
4000 465 354
4500 534 457
5000 540 514
5500 510 534
6000 483 551

Horsepower: 550 hp street motor
Engine: 406 SBC
Heads: AFR CNC Race Ready 210cc
Compression: 10.3:1
Carburetor: 750
Ignition: MSD HEI Billet, 36* timing
Cam: Lunati Hyd. Roller 232*/242*, 0.560"/0.570", 1.6 rockers
Exhaust: 1 3/4" headers
Fuel: 93 octane pump gas

I'm also bettin' that if you tightened up the squish to 0.035" to 0.040", you could run less octane than the 93.