CYLINDER HEADS
Dart PRO2, 380cc CNC Aluminum Heads Maximum performance for bracket racing, heads up, and super classes. Over 7,500 RPM, 500+ CID, a great head for maximum effort comp and bracket cars. PRO2 24°, 380cc CNC heads have been revised with larger 2.350" intake valves and revised port design for improved air flow and a substantial horsepower increase. These heads were designed to make competitive engine building easier and less expensive. Every intake port, every exhaust runner, valve bowl and combustion chamber is 100% digitally CNC-machined for the ultimate con- sistency. Sold individually.
Intake Runner 380cc 380cc
Comb. Chamber
Plug Angle Angle
Port Type
Valve Angle
Intake Valve
Exhaust Valve 1.850" 1.880"
Part No.
Description
DRT19674080 DRT19674030
Pro 2 Bare Head Pro 2 Bare Head
124cc 124cc
Rect. Rect.
24°
2.350"
Straight
24°/15° 2.300"
Edelbrock Performer RPM High-Compression 454-O Aluminum Head Oval port head has exhaust crossover passage to achieve 50 state legal status. Sold individually.
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
Part No.
Description
Assembled, 1.55" Dual Valve Springs, Hyd. Cam 290cc 100cc
EDE60439
Oval
26° 2.190" 1.880"
Edelbrock E-Street Aluminum Head These E-Street Aluminum cylinder heads are designed for entry-level street perfor- mance engines operating in the idle to 5,500 rpm range. Features Edelbrock A356 T-6 aluminum alloy for superior strength, larger-than-stock intake and exhaust ports, modern combustion chamber design, heli-coiled threaded inserts, manganese bronze valve guides, 7/16" ARP rocker studs, and powder metal interlocking valve seats. Assembled heads include stainless steel one-piece valves, hardened spring cups, 7/16" ARP rocker arm studs, 3/8" guide plates, 1.550" dia. valve springs, steel reatiners, and PC-seals. Max valve lift .700". Sold individually.
Intake Runner 290cc
Comb. Chamber
Port Type Oval
Valve Angle
Intake Valve
Exhaust Valve 1.880"
Part No.
Description Assembled
EDE50459
110cc
26°
2.190"
Edelbrock Performer High Compression, Performer RPM & Performer RPM High-Compression Aluminum Heads Performer RPM head is available with oval or rectangular ports. Performer RPM 454-O heads are the same as Performer castings, but the exhaust crossover has been deleted. The 454-R rectangular port head flows substantially more than the oval port head in the 3500-7000 RPM range. All sold individually. Bare or assembled.
Intake Runner 290cc 290cc 290cc 290cc 290cc 315cc 315cc 315cc
Comb. Chamber
Port Type Oval Oval Oval Oval Oval Rect. Rect. Rect.
Valve Angle
Intake Valve
Exhaust Valve
Part No.
Description
Camshaft
EDE60435 A EDE60439 A EDE60455 EDE60459 EDE60499 B EDE60549 EDE60559 EDE61559
Assembled, H/C Performer RPM Hydraulic Roller
100cc 100cc 110cc 110cc 100cc 118cc 118cc 118cc
26° 26° 26° 26° 26° 26° 26° 26°
2.190" 1.880" 2.190" 1.880" 2.190" 1.880" 2.190" 1.880" 2.190" 1.880" 2.190" 1.880" 2.190" 1.880" 2.250” 1.890”
Assembled, H/C Performer RPM Assembled, Performer RPM Assembled, Performer RPM Assembled, H/C Performer Bare Head, Performer RPM Assembled, Performer RPM
Flat Tappet
Hydraulic Roller
Flat Tappet Flat Tappet Flat Tappet Flat Tappet
Assembled, Marine Performer RPM Flat Tappet
A High-Compression Performer RPM. B High-Compression Performer
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2021-22 ENGINE BUILDER CATALOG
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