Miller Hi-Speed Head - F.A.Q.

1) What carb: For street use a single Stromberg 48 or the 2-barrel carb from a 1955 Ford will be adequate. For a more nostalgic look, I manufacture a finned ‘Miller’ dual downdraft intake manifold of the Burns, Zepher or Ansen style for 3 bolt base plate carburetors like the Stromberg 81 or 97.

2) For a modern carburetor the Weber progressive 2-barrel (32/36-mm) gives great fuel economy. I sell the intake manifold, linkage and air cleaner for this set-up.

3) Exhaust: I make and sell a set of tube headers which accepts any of the intake systems mentioned above, clear either the A or B flywheel housings and the B fuel pump. They were computer designed and engine dyno proven to be the best of 5 tested. I also have a Duke Hallock style cast iron exhaust manifold for my head.

4) Distributor: I sell a new electronic, centrifugal advance replacement distributor and it mounts in the same location on the engine only higher in the engine compartment because it mounts on top of the Miller Hi-Speed Head.

5) Oiling system: As long as the crankshaft and connecting rod babbitt bearings are of good quality material and workmanship plus you don’t exceed 4000 RPM the bearings should be fine.

6) Camshaft: Because my roller rocker assembly uses 1.5:1 ratio rockers, what ever lift cam you have in the engine presently will open the valves half again as much as it does now. Example: .300” camshaft lobe lift (height) multiplied by 1.5 rocker ratio equals .450” lift of the valve off the seat.

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Phone: (805) 647-2766
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