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This is a "universal" supercharging system designed for vehicles equipped
with carbureted small block Chevrolet engines. Horsepower gains depend on boost
levels, engine efficiency, etc., but can range from 30-75%. Installation time
will also vary depending on application, but can range from 4-10 hours. This
system has been verified to fit on 1967-1969 Camaro/Firebird (w/cowl hood), 1964-1972
Chevelle and 1955-1957 sedan (BelAir/210 etc.) and 1962-1972 Nova/Chevy II.
Features:
* Horsepower gains, depending on boost levels, engine volumetric efficiency
and other factors, range from 30% to more than 75%.
* Vortech gear driven V-1, S-Trim supercharger for unmatched reliability.
* Technologically advanced, high-efficiency impeller and housing design developed
in Vortech's supercharger test cell to meet SAE J1723 Standard.
* Cast aluminum carburetor enclosure assembly for use with Holley #4150 or
Demon 750 MD carburetor. The enclosure pressurizes the float bowls and throttle
shafts for seamless response. It features front and rear -8 AN fuel inlet ports
as well as multiple locations for pressure/vacuum connections. Linkage arms,
splined shaft, and left/right hand spherical rod ends are included for simple
throttle connection and adjustment. Carburetor studs are also supplied.
* Oil feed and oil drain assemblies deliver the best possible lubrication and
cooling for the supercharger, even under sustained boost conditions.
* Cast aluminum mounting bracketry with all necessary hardware.
* 6061-T6 billet aluminum twin mounting plates for rigid supercharger attachment.
* 3.5" diameter cast aluminum discharge duct assembly utilizes heat resistant
silicon sleeves and premium quality stainless steel clamps.
* 10-rib, 6061-T6 billet aluminum supercharger crank pulley with hard anodize
finish (6" diameter) and pulley spacer.
* Automatic belt tensioner with dual bearing tensioner pulley.
P/N 4GP218-010S: Universal carbureted small block Chevrolet supercharging
system with V-1 S-Trim, satin finish
P/N 4GP218-018S: Universal carbureted small block Chevrolet supercharging system
with V-1 S-Trim, polished finish
Please note: Due to the many possible configurations of accessory drives in
small block Chevrolet applications, the supplied pulley spacer must be modified
to mate with the included supercharger drive crank pulley and the vehicle's
existing accessory drive crank pulley. Or, as an option, Vortech offers a complete
crank pulley assembly that includes a two-groove accessory drive crank pulley
(for use with "long" style water pumps), spacer and all hardware
(P/N 4GP116-011). Installation of this system requires a high volume fuel pump
and properly jetted 4150-type carburetor must include mechanical secondaries,
correct needle and seat and possibly a nitrophyll float set, depending on boost
level. For '67-'69 Camaro/Firebird applications, in addition to the cowl hood,
minor under hood trimming may be necessary and we recommend using an Edelbrock
Victor Jr. manifold. For best results, we suggest a compression ratio range
of 8:1 to 9.5:1 with 9:1 being ideal. A mild "street" camshaft is
best since a centrifugal supercharger by nature doesn't require a lot of overlap
for maximum efficiency. On early engines, a high-performance, boost referenced
mechanical fuel pump will provide the necessary fuel in most applications.
Late model motors may require an electrical fuel pump and a boost referenced
fuel pressure regulator providing 6 lbs. of pressure.
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