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The Edelbrock #60509 Performer RPM cylinder head is designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. The Edelbrock #60509 Performer RPM head with the 72cc combustion chamber are for higher compression engines. Performer RPM #60509 is semi-machined and must be finished by a professional cylinder head porter. They include valve guides and seats installed with no intake pushrod holes.
The Edelbrock #60509 Performer RPM cylinder heads are designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head.
Pontiac:-:326 (5.3L)/350 (5.7L)/389 (6.4L)/400 (6.6L)/421 (6.9L)/428 (7.0L)/455 (7.4)

• Patterned After The Ram Air IV Pontiac Cyl. Head

The Edelbrock #60669 Performer RPM cylinder head is designed for 1968-87 429/460 Big-Block Ford applications. The Edelbrock #60669 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60669 Performer RPM cylinder heads are designed for 1968-87 429/460 BB Ford engines. The Edelbrock #60669 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where performance is needed.
Ford:Big-Block:429 (7.0L )/460 (7.5L)

• Over 500+ At 6500 RPM

The Edelbrock #60459 Performer RPM O-Port cylinder head is designed for Big-Block Chevy applications. The Edelbrock #60459 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60459 Performer RPM O-Port cylinder heads are designed for BB Chevy engines. The Edelbrock #60459 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chevrolet:Big-Block Mark IV:396 (6.6L)/402 (6.6L)/427 (7.0L)/454 (7.4L)/502 (8.2L)

The Edelbrock #60929 Performer RPM cylinder head is designed for 1961-79 Chrysler 361-440 c.i.d. Wedge engine applications. The Edelbrock #60929 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60929 Performer RPM cylinder heads are designed for 1961-79 Chrysler 361-440 Wedge engines. The #60929 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chrysler:Big-Block B-Series:383 (6.3L)/400 (6.6L);Chrysler:Big-Block RB-Series:413 (6.8L)/426 (7.0L)/440 (7.2L)

• Angled Spark Plugs For Superior Combustion

The Edelbrock #61649 Performer RPM CJ cylinder head is designed for use with 1968-87 429/460 Fords and SVO 514 engine applications. The Edelbrock #61649 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
Edelbrock part #61649 Performer RPM CJ cylinder heads are designed for use with 1968-87 429/460 Fords and SVO 514 engine applications.
Ford:Big-Block:429 (7.0L )/460 (7.5L)

• Heli-Coils in Rocker Studs and Exhaust Bolt Holes

The Edelbrock #60549 Performer RPM Bare Rectangle Port cylinder head is designed for Big-Block Chevy applications. The Edelbrock #60547 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60549 Performer RPM Bare Rectangle Port cylinder heads are designed for BB Chevy applications. The #60547 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chevrolet:Big-Block Mark IV:396 (6.6L)/402 (6.6L)/427 (7.0L)/454 (7.4L)/502 (8.2L)

• Smaller-Than-Stock 11/32 in. Valve Stems Promote Excellent Flow

The Edelbrock #60559 Performer RPM Rectangle Port cylinder head is designed for Big-Block Chevy applications. The Edelbrock #60559 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 2500 to 7000 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60559 Performer RPM Rectangle Port cylinder heads are designed for BB Chevy engines. The Edelbrock #60559 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chevrolet:Big-Block Mark IV:396 (6.6L)/402 (6.6L)/427 (7.0L)/454 (7.4L)/502 (8.2L)

The Edelbrock #60179 Performer RPM head is designed for use with non-emission 1968-73 Chrysler 340 c.i.d. engine applications. The Edelbrock #60179 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60179 Performer RPM heads are designed for use with non-emission 1968-73 Chrysler 340 c.i.d. engines. The Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chrysler:Small-Block:273 (4.5L)/318 (5.2L)/340 (5.6L)/360 (5.9L)

• Thicker Deck Surfaces Than Other Brands

The Edelbrock #60769 Performer RPM Bare cylinder head is designed for use with non-emission 1968-91 Chrysler 318-340-360 c.i.d. engine applications. The Edelbrock #60769 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. For use on pre-pollution controlled vehicles only.
The Edelbrock #60769 Performer RPM Bare cylinder heads are designed for use with non-emission 1968-91 Chrysler 318-340-360 engines. These are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chrysler:Small-Block:273 (4.5L)/318 (5.2L)/340 (5.6L)/360 (5.9L)

• Thicker Deck Surfaces Than Other Brands

The Edelbrock #60779 Performer RPM head is designed for use with non-emission 1968-91 Chrysler 318-340-360 c.i.d. engine applications. The Edelbrock #60779 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60779 Performer RPM heads are designed for use with non-emission 1968-91 Chrysler 318-340-360 engines. The #60779 heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chrysler:Small-Block:273 (4.5L)/318 (5.2L)/340 (5.6L)/360 (5.9L)

• Thicker Deck Surfaces Than Other Brands

The Edelbrock #60999 Performer RPM cylinder head is designed for 1955-86 Small-Block Chevy applications. The Edelbrock #60999 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60999 Performer RPM cylinder heads are designed for 1955-86 SB Chevy applications. The Edelbrock #60999 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.
Chevrolet:Small-Block Gen I:302 (4.9L)/327 (5.4L)/350 (5.7L)/400 (6.6L)

• Retain Stock Compression Ratio

The Edelbrock #60899 Performer RPM cylinder head is designed for 1955-86 Small-Block Chevy applications. The Edelbrock #60899 Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. This cylinder head delivers great throttle response and power from 1500 to 6500 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
The Edelbrock #60899 Performer RPM cylinder heads are designed for 1955-86 SB Chevy engines. The Edelbrock #60899 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where performance is needed.
Chevrolet:Small-Block Gen I:302 (4.9L)/327 (5.4L)/350 (5.7L)/400 (6.6L)

• Retain Stock Compression Ratio