This head is engraved and serial numbered by Engine Quest for IMCAs Sport Mods， Stock Cars， and Hobby Stocks. Now approved for WISSOTA Midwest Mods and Street Stocks. Assembled heads will include the following: 3/8" screw in studs # 915-99156. 76 cc combustion chamber. 176-178 cc intake runners. Straight plug. 1.94/1.50 intake/exhaust valves #910-14140-1 & 910-14145-1. Available bare or assembled and blue printed. Heavy duty valves. (COMP) version includes Retainers and locks # 915-39741 & 577-555. (COMP) version includes 1.25" high-performance valve springs # 180-671515. (SM-Sport Mod) version includes Isky Springs # 450-235D， 7 deg locks and Ferrea tool steel retainers. (SC-Stock Car) version includes Isky Springs # 450-235D， 7 deg locks and Ferrea tool steel retainers， Max Flat Milled w/ intake surface corrected. Three angle valve job. Item Details Straight Plug 1.94/1.50 Intake Valves IMCA Approved.
- This head is engraved with IMCA logo and serial numbered by Engine Quest to make it approved for use in IMCA classes that allow the CH350I cylinder head
- 76 cc combustions chamber and 176 to 178 cc intake runners deliver consistent performance
- COMP version (Complete assembled) includes stainless steel valves， performance valve springs， retainers， keepers， and 3/8" screw in studs
- SM version (Sport Mod) also has upgraded Isky valve springs part number 450235D and lightweight Ferrea tool steel retainers
- SC version (Stock Car) also has upgraded Isky valve springs part number 450235D， lightweight Ferrea tool steel retainers， and max flat milled w/ intake surface corrected
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