Carburetor

670cfm four-barrel with mechanical or vacuum operated secondaries and electric choke for 350/290

750 cfm four-barrel with mechanical or vacuum operated secondaries and electric choke for ZZ4/FB385/HT383

750 or 770 cfm four-barrel with mechanical or vacuum operated secondaries and electric choke for350HODeluxe/350HO/ZZ383

Distributor

High Energy Ignition (HEI) for ZZ4/FB385/350HO Deluxe/350HO/ZZ383/HT383/350/290HP. GM Original Equipment for HT383E

Flex plate

Standard automatic transmission flex plate for ZZ4/FB385/350HO Deluxe/350HO/ZZ383/HT383/HT383E

The 350/290HP does not include a flex plate

Horsepower Rating

290 HP @ 5100 RPM for 350/290

330 HP @ 5500 RPM for 350HODeluxe

355 HP @ 5800 RPM for ZZ4/FB385

425 HP @ 6000 RPM for ZZ383

Intake Manifold

Dual plane manifold for 350HO Deluxe/ZZ4/FB385

Maximum Engine Speed

350/290 5100 RPM 3250HO/350HO Deluxe 5700 RPM ZZ4/FB385 5800 RPM HT383/HTE383/ZZ383 6000 RPM

Water Pump

Long style cast iron for ZZ4/F385/350HO/HT383/HT383E