UUMMMM... YOU WANT PORTED VACUUM.. VENTURI, AT LEAST BY MODERN STANDARDS, IF ITS ON CONSTANT, THE ING WILL RETARD UPON THROTTLE APPLICATION, CAUSING HESITATION, WITH PORTED VACUUM, NO VACUUM IS BUILT UNTIL VAC BUILDS DURING THROTTLE, THUS INCREASING RPM W/O FURTHER THROTTLE MOVEMENT, PROGRESSIVE POTENTIAL.. EVEN IF THIS IS SAID TO BE WRONG BY THE MANUALS, TRY IT, IT'LL BE BETTER OFF. THATS THE WHOLE POINT OF INITIAL ADVANCE (SET) AND VACUUM ADVANCE- IT HAPPENS WHEN BUILDING VACUUM THROUGH POWERBAND. JIM |