Charlie Yapp's Scalded Dog Vortex dual Zenith intake manifold

For those who desire a period style dual carburetor intake system, this is a nice unit
We tested this aluminum intake manifold on a stock Model A Ford engine with a Snyder's 5.3-1 compression head and an Aries muffler.
The results were a very smooth power curve throughout the rpm range. The manifold & dual carburetors added 10 horsepower over the base run with the stock Zenith carburetor & intake manifold.



        


VIEW "A" DYNO SHEET                                        VIEW "B" DYNO SHEET



With the stock engine, the "A" & "B" Zenith carburetors make the same horsepower. If the engine had a high performance camshaft & larger intake valves, the "B" carburetor should show an improvement over the "A" style Zenith.



For Vortex intake manifold and new Zenith carburetor pricing, visit our web catalog.




GO TO WEB CATALOG MANIFOLD PAGE

RETURN TO FRONT PAGE

RETURN TO DYNO SHEETS