Intake for Riley OHV head

[Jim Brierley]

I used a standard aftermarket intake on my 2-port many years ago, not hard to do. The port spacing on real Riley's was the same as the block. Mine put out 60 HP to the rear wheels with a stock B cam, glass-bowl Holley carb, and B dist. That was on an electric dyno so I pushed in the clutch and let the dyno drive the gear train, tookm 25 HP. So approx 85 HP at the flywheel.