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Trick Flow® Super 23® 175 Cylinder Heads for Small Block Chevrolet TFS-30300001

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Cylinder Heads, Super 23® 175, Fast As Cast®, Assembled, 1.250" Springs, Emissions Legal, Small Chevy, Pair

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Trick Flow Specialties TFS-30310001 - Trick Flow® Super 23® 175 Cylinder Heads for Small Block Chevrolet


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Brand: Trick Flow Specialties

Manufacturer's Part Number: TFS-30300001

Part Type: Cylinder Heads

Product Line: Trick Flow® Super 23® 175 Cylinder Heads for Small Block Chevrolet

Summit Racing Part Number: TFS-30300001

Cylinder Head Style: Assembled

Cylinder Head Material: Aluminum

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

Intake Valve Diameter (in): 1.940 in.

Exhaust Valves Included: Yes

Exhaust Valve Diameter (in): 1.500 in.

Valve Springs Included: Yes

Maximum Valve Lift (in): 0.480 in.

Outside Diameter of Outer Spring (in): 1.250 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 as a pair.

CARB EO Number: D-369-6 (pdf)
To see a list of qualifying vehicles, enter CARB EO Number D-369-6

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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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. The heads are 50-state emissions-legal under CARB E.O. Number D-369-6 for 1995 and earlier GM vehicles with Chevy 262–350 engines. The heads are available fully assembled or as bare castings.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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