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Trickflow Super 23, SB Chevy, 175cc Intake, 1.470" Valve Springs, Perimeter Bolt

Trick Flow® Super 23® 175 cylinder heads give you performance that closely matches CNC-ported cylinder heads—for about the same price as ordinary cast heads! Made to outperform factory small block Chevy heads on 283-350 c.i.d. street performance engines, the Super 23 175 heads feature small cross-section intake runners to promote low-rpm torque and high-rpm horsepower on small bore engines. Fast As Cast® runners duplicate the runner profile and performance levels of CNC-ported heads. Other features include angled spark plugs, raised valve cover rails, and extra-thick decks and walls for porting.

Trick Flow Super 23 175 heads are a direct fit, high performance replacement for factory heads and accept most original accessories. They are emissions-legal under CARB E.O. #D-747-1 for 1995 and earlier GM vehicles with Chevy 262–350 engines and accept most accessories. The heads are available fully assembled or as bare castings. Sold individually.
Was: $629.00
Sale: $580.00
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Manufacturer's Part Number: TFS-30310002
Part Type: Cylinder Heads
Product Line: Trick Flow® Super 23® 175 Cylinder Heads for Small Block Chevrolet
Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Intake Valve Diameter (in): 1.940 in.
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 56
CNC-Machined Combustion Chamber: No
Intake Runner Volume (cc): 175cc
Exhaust Runner Volume (cc): 67cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Combustion Chamber Style: Heart
Intake Port Shape: Rectangular
Intake Port Location: Standard
Exhaust Port Shape: D-port
Exhaust Port Location: Standard
Spark Plug Style: Angle
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.500 in.
Valve Springs Included: Yes
Maximum Valve Lift (in): 0.540 in.
Outside Diameter of Outer Spring (in): 1.470 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Chromoly steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8-24 in.
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Valve Cover Mounting Style: Perimeter bolt
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 23
Exhaust Valve Angle: 23
Valve Guides Included: Yes
Valve Guide Material: Bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: Yes
Quantity: Sold individually.
Notes: These heads only fit engines with a 3.736 in. bore or larger. Requires drilling steam holes into head on 400 c.i. applications.
CARB EO Number: D-747-1 (pdf)
-To see a list of qualifying vehicles, enter CARB EO Number D-747-1
Emissions: California EO Approved

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  • 40.0 lbs.
  • W12.0000” x H12.0000” x L24.0000”
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