Got the little stock bore/stock stroke 318 magnum running a few weeks ago and I have to say that Racer Brown builds the best cams out there, very happy and snappy engine.
Engine Specs:
-Stock pistons flipped w/ stock rods & crank
-Hydraulic roller .565/.565 232-232 @ .050 with a 106 LSA
-Mild home ported magnum heads with stock valve sizes
-Hughes Magnum Springs (P/N HUG 1199)
-Mild ported Professional Products Chinagap intake
-Custom built 900 cfm Thermoquad built by the TQGuru Ken Manley in Canada
-Will get long tube headers when it goes into the '75 Duster
(P.S. I only ran it for the minute and 16 seconds of the video so no harm done with no radiator setup
Sounds very healthy , with all of the 318 threads here, I'm sure you will be inundated with...I wish you would have dyno tested or how much HP does it make? Good job nonetheless. J.Rob