Governors

ALTERNATIVE FUEL SYSTEMS, INC.

DISTRIBUTOR OF HOOF GOVERNORS

From The Pierce Company

UNIVERSAL AIR VELOCITY GOVERNORS

Air velocity governors are installed between the carburetor throttle body and the intake manifold. The velocity governor controls engine and or vehicle speed using engine vacuum. Each governor has a predetermined speed range. The governor may be adjusted anywhere within this range for your particular application. Correct air flow is clearly marked on the governor casting. HOOF governors by THE PIERCE COMPANY are reliable and easy to install!

SELECT YOUR GOVERNOR

*CUBIC INCH DISPLACEMENT*	*BOLT PATTERN (See Chart)*	*SPEED RANGE*	*GOVERNOR MODEL*
*60 - 100*	A	*2400 - 3800*	*S100*
*100 - 150*	A	*2000 - 3400*	*S100*
*150 - 200*	A	*1400 - 2100*	*S100*
*100 - 150*	B	*2600 - 3800*	*S200*
*150 - 200*	B	*2000 - 2800*	*S200*
	B	*2000 - 2800*	*S201*
	B	*2800 - 3600*	*S204*
	B	*2800 - 3600*	*S203*
*200 - 250*	B	*1500 - 2500*	*S200*
	B	*1500 - 2500*	*S201*
	B	*2400 - 3400*	*S204*
	B	*2400 - 3400*	*S203*
*250 - 300*	B	*1200 - 2400*	*S200*
	B	*1200 - 2400*	*S201*
	B	*2000 - 3200*	*S204*
	B	*2000 - 3200*	*S203*
*300 - 350*	B	*1000 - 2000*	*S200*
	B	*1000 - 2000*	*S201*
	B	*2000 - 2600*	*S204*
	B	*2000 - 2600*	*S203*
*150 - 200*	C	*1800 - 3000*	*S301*
	C	*1800 - 3000*	*S300*
	C	*2400 - 3800*	*S303*
	C	*2400 - 3800*	*S302*
*200 - 250*	C	*1800 - 2500*	*S301*
	C	*1800 - 2500*	*S300*
	C	*3000 - 3800*	*S303*
	C	*3000 - 3800*	*S302*
*250 - 300*	C	*1500 - 2500*	*S301*
	C	*1500 - 2500*	*S300*
	C	*2500 - 3800*	*S303*
	C	*2500 - 3800*	*S302*
*300 - 350*	C	*1500 - 2200*	*S301*
	C	*1500 - 2000*	*S300*
	C	*1700 - 3200*	*S303*
	C	*1700 - 3200*	*S302*
*350 - 450*	C	*1200 - 2000*	*S301*
	C	*1200 - 2000*	*S300*
	C	*1700 - 2800*	*S303*
	C	*1700 - 2800*	*S302*
*250 - 400*	F	*1800 - 2600*	*S2050*
	F	*2400 - 3200*	*S2036*
	F	*3000 - 3800*	*S2038*
*300 - 400*	G	*2800 - 4000*	*S6008*
*300 - 400*	H	*3000 - 4000*	*S2073*

Using the following chart, match your existing carburetor or governor flange to determine correct bolt pattern. Then select engine size and required governed speed range.