Biography: Holley's cost-effective but strong-performing Pro-Jection electronic fuel-injection system is actually a series of throttle-body injection units; one-barrel, two-barrel, and four-barrel bodies make up the Pro-Jection lineup. Designed to replace the carburetor on non-computerized engines, the Pro-Jection throttle bodies feature basic bolt-on installation, work well with stock or modified engines, are useable on almost any type of intake manifold, and greatly improve the fuel system's throttle response, the overall efficiency, and the reliability.
The Performance: Horsepower and torque gains are related to the engine's size and state of tune, but the Pro-Jection system will deliver gains of 10 to 30 horsepower on average.
Produced By: Holley Performance Products, Inc., Dept. OR, 1801 Russellville Rd., Bowling Green, KY 42102, (270) 782-2900, www.holley.com
Please Welcome: Turbo City Hi-Flow Throttle Body
Biography: Designed for '91-and-newer Jeep TJ and YJ models, Turbo City's Rock-It performance throttle body is a factory casting specifically designed for enhanced airflow and improved throttle response. The Hi-Flow Throttle Body fits the Jeep's 2.5L four-cylinder engine as well as its 4.0L inline-six engine. The new throttle body is 50-state legal and is easily installed with basic handtools.
The Performance: Depending on the engine size, expect a 6 to 8hp increase.
Produced By: Turbo City, Dept. OR, 1137 W. Katella Ave., Orange, CA 92867, (714) 639-4933, www.turbocity.com
Magical Intake Manifolds
Introducing: Edelbrock Performer
Biography: A true high-performance dual-plane intake manifold for pre-'86 small-block GM engines. The cast-aluminum Performer is designed to accept an OE-style A/C bracket, a choke, a water neck, an alternator bracket, and an HEI ignition. Performer No. 2101 is for engines without EGR; No. 3701 contains EGR passages and a mounting pad for the EGR valve. Either small-block Performer is 50-state legal and uses a carburetor mounting pad that accepts an OE or an aftermarket four-barrel carb. The Performer's dual-plane design is efficient at low- and mid-rpm ranges; throttle response is enhanced through more efficient management of the intake airflow. Performer No. 2101 is available from Edelbrock with a clear powdercoat finish
The Performance: The Performer's power gains are dependent on the type of camshaft, the cylinder heads, and the exhaust system installed on the engine, but a stock GM small-block V-8 will typically see an increase of 20 hp and 25 lb-ft of torque after the installation of an Edelbrock Performer.
Produced By: Edelbrock Corp., Dept. OR, 2700 California St., Torrance, CA 90503, (310) 782-2222, www.edelbrock.com