Holley 502-6 Holley throttle body.
1987-1989 Chevrolet and GMC truck 5.7L throttle body.
Holley designed this throttle body with all relevant emission provisions and hook–ups for a true 50–State legal installation.
Engineered for a “bolt–on” installation on stock factory Manifolds for the applications listed.
The two barrel throttle replacement bodies are considered to be the functional equivalent of the original equipment throttle body and, as such, are considered to be 50–State legal. Therefore, the C.A.R.B. E.O. number is not required.
This is a Two Barrel TBI Model 3210 Throttle Body Injection, 670 cfm. A direct replacement for OE units with a 2 in. throttle bore.
Features a 42% area increase over the stock TBI.
Includes air distribution ring.
Provides increased torque and horsepower up to 25% over stock.
50 State Legal.
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