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Enginequest IMCA/WISSOTA Small Block Chevy Cylinder Heads

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Specs
Material Type:
Steel
Sold in Quantity:
Each
Finish:
Natural
Port Style:
Square Port
Intake Runners:
176-178 cc
Combustion Chamber:
619
Cylinder Head Style:
-
Spark Plug Style:
Straight
Stud Diameter:
.38
Intake Valve Diameter:
1.94
Exhaust Valve Diameter:
1.50
Notes
Manufactures recommends using R5673-8 NGK or equivalent spark plugs. (373-133 or 373-134 Autolite).
Enginequest IMCA/WISSOTA Small Block Chevy Cylinder HeadsEnginequest IMCA/WISSOTA Small Block Chevy Cylinder HeadsEnginequest IMCA/WISSOTA Small Block Chevy Cylinder Heads
Enginequest IMCA/WISSOTA Small Block Chevy Cylinder Heads

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Enginequest IMCA/WISSOTA Small Block Chevy Cylinder Heads

Details

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What's in the Box

This head is engraved and serial numbered by Engine Quest for IMCA's 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
  • Retainers and locks # 915-39741 & 577-555
  • 1.25" high-performance valve springs # 180-671515
  • Three angle valve job


Item Details

Straight Plug
1.94/1.50 Intake Valves

You may also be interested in:

Autolite AR133 14mm Racing Spark Plug-5/8 Hex, Tapered, .46 Reach, Med
                        

Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range Medium. 

  • Standard tip
  • 14 mm plug
  • .460" reach
  • 5/8" hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR133

Note: Please use the Vendor Number to reference the PDF chart links listed.

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Autolite AR134 14mm Spark Plug-5/8 Hex Taper Seat .46-Slightly Hotter
                        

Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range Slightly Hotter. 

  • Standard tip
  • 14 mm plug
  • .460" reach
  • 5/8" hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR134

Note: Please use the Vendor Number to reference the PDF chart links listed.

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)