Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These heads give great torque and horsepower up to 6500 rpm.

• Designed for 1968-87 429-460 Fords and the SVO 514 engine.
• Machined profile Cobra Jet-style intake port entries.
• On a 514-inch engine, these heads are capable of 624 hp on 91 octane gas that beats the competition by over 65 horsepower!
• Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using.

Combustion chamber volume: 75cc
Intake runner volume: 310cc
Exhaust runner volume: 100cc
Intake valve diameter: 2.19" - Not included
Exhaust valve diameter: 1.76" - Not included
Valve stem diameter: 11/32"
Valve guides: USA

Manganese bronze
Deck thickness: 5/8"
Valve spring diameter: 1.55" - Not included
Valve spring maximum lift: .700" - Not included
Rocker stud: 7/16" - Not included
Guide plate: Hardened Steel - Not included
Pushrod diameter: 3/8"
Exhaust port location: Stock
Spark plug fitment: 14mm x 3/4" reach, gasket seat
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