Page 285 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Big Block Chevy Big Block Chevy
Performer 454-O Cylinder Head E-CNC Cylinder Head
The addition Heads feature fully
of exhaust CNC-ported intake
crossover and exhaust
passages for ports, and
cold weather combustion
operation chambers for
makes the Performer cylinder head 50-state legal. Match with a Performer exceptional flow. Heads utilize modified valve and spark plug angles for
manifold, camshaft and lifter kit, carburetor, and exhaust headers for an improved performance, while maintaining the stock exhaust port location.
engine capable of producing up to 470 ft./lbs. of torque at 3500 RPM. Offered in oval or rectangular intake port versions. Sold individually, as-
Sold individually, fully assembled. sembled heads include stainless steel valves, 1.55" dia. valve springs, steel
Int. Exh. Chamber Intake Valve Max. retainers, keepers, valve seals, rocker studs, and guide plates.
Part No. Description Valve Valve Volume Volume Spring Lift Int. Exh. Chamber Intake Valve Max.
EDE60435 Assem., Hyd. Roller Cam 2.19" 1.88" 100cc 290cc 1.55" .700 Part No. Description Valve Valve Volume Volume Spring Lift
EDE60439 Assem., Flat Tappet 2.19" 1.88" 100cc 290cc 1.55" .700" Assem., Rectangular
EDE8551 Head Bolt Kit, Required — — — — — — EDE79539 2.30" 1.88" 108cc 348/355cc 1.55" .700"
Port, Hyd. Cam
Head Bolt Kit,
EDE8551 — — — — — —
Performer RPM 454-O Cylinder Head Mark IV Only
Identical to
street legal Victor Jr. 24° Cylinder Head
454-O Cylinder Based on the Victor 24° cylinder head, but
Head, but with with smaller, 300cc intake runners.
deleted exhaust Rectangular port aluminum
crossover cylinder heads is ideal for drag
passage for more power. High-performance oval port head can help produce over racing big block Chevy engines
540 horsepower with 9.5:1 compression when used with the proper matching with 4.310" or larger bores
components. Intake valves are 2.19", exhaust valves are 1.88" and both are and up to 510 cu. in. Head has
lighter, with smaller diameter (11/32") stems than original valves. Semi-open .100" raised intake ports, raised exhaust
combustion chamber provides exceptional combustion efficiency with streetable ports, blended bowls, competition valve job, stainless 2.250" intake and
compression ratios. Sold individually, bare or completely assembled. 1.900" exhaust valves. Sold individually, completely assembled.
Int. Exh. Chamber Intake Valve Max. Int. Exh. Chamber Intake Valve Max.
Part No. Description Valve Valve Volume Volume Spring Lift Part No. Description Valve Valve Volume Volume Spring Lift
EDE60455 Assem., Hyd. Roller Cam 2.19" 1.88" 110cc 290cc 1.55" .700" EDE77485 Assem., Hyd. Roller Cam 2.25" 1.90" 106cc 300cc 1.55" .700"
EDE60459 Assem., Hydraulic Cam 2.19" 1.88" 110cc 290cc 1.55" .700" EDE8551 Head Bolt Kit, Mark IV Only — — — — — —
EDE60499 Assem., Hydraulic Cam 2.19" 1.88" 100cc 290cc 1.55" .700"
EDE8551 Head Bolt Kit, Required — — — — — — Victor 24° Cylinder Head

Performer RPM 454-R Cylinder Head The best
standard
Rectangular port
big block Chevy port location,
cylinder head rectangular
offers increased port cylinder
flow and veloc- head offered
ity compared for 4.470" and
to standard oval port cylinder head, particularly between 3500-7000 RPM. larger bore big block Chevys. Aluminum head features large 340cc intake
Open 118cc combustion chambers and 315cc/300cc intake runners provide runners, rolled over deck, altered valve locations, partially CNC-machined
maximum performance potential. Stainless 2.19" intake and 1.88" exhaust combustion chambers, competition valve job, stainless 2.300" intake and
valves have 11/32" stems (smaller than original) to reduce valve train 1.900" exhaust valves. Sold individually, completely assembled.
Exh. Chamber Intake Valve Max.
Int.
weight. Deck surface was specifically designed for compatibility with all big Part No. Description Valve Valve Volume Volume Spring Lift
block Chevy engine blocks. Sold individually, bare or completely assembled. EDE77409 Assem., Mech. Roller Cam 2.30" 1.90" 119cc 340cc 1.635" .880"
EDE8551 Head Bolt Kit, Mark IV Only — — — — — —
Int. Exh. Chamber Intake Valve Max.
Part No. Description Valve Valve Volume Volume Spring Lift
EDE60549 Bare 2.19" 1.88" 118cc 315cc N/A N/A
EDE60555 Assem., Hyd. Roller Cam 2.19" 1.88" 118cc 315cc 1.55" .700"
EDE60559 Assem., Hydraulic Cam 2.19" 1.88" 118cc 315cc 1.55" .700"
EDE8551 Head Bolt Kit, Required — — — — — —

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