Fast Burn Aluminum Cylinder Head Assembly


  • Fast Burn 23-degree cylinder head
  • Completely assembled with 2.000″/1.550″ valves
  • 210cc intake port, roof raised .240″
  • Requires no additional porting for optimal performance


Shipping is free, but there is a delivery fee for residential addresses.

Fast Burn Aluminum Cylinder Head

P/N 19300955

– CNC-machined aluminum performance cylinder head
– Completely assembled with 2.000″/1.550″ valves
– 210cc intake port, roof raised .240″
– 78cc D-shaped exhaust ports, raised .200″ – requires Fel-Pro® exhaust gasket P/N 1470 (may require minor trimming)
– 62cc combustion chamber, .400″ deck (can be milled up to .060″)
– No heat riser
– Angled spark plugs (5/8″ hex, 3/4″ reach, tapered plugs)
– 1.48″ valve spring seat diameter
– Use head gaskets with stainless steel fire rings
– Raised, machined rocker rails
– .530″ maximum valve lift (without modifications)
– Screw-in studs (3/8″ top, 7/16″ bottom)
– New “time-serts” prevents oil migration through rocker studs
– Dual bolt patterns for perimeter-bolt and center-bolt valve covers
– Dual bolt patterns for Vortec and early-model intake manifolds
– Machined bare head P/N 19300956
– Use intake gasket P/N 19301685

This head is assembled with the following components:

  • 12555331 Intake Valves (4)
  • 12551313 Exhaust Valves (4)
  • 12625033 Valve Springs (8)
  • 19301707 Valve Spring Seats (8)
  • 19301708 Valve Spring Retainers (8)
  • 10212810 Valve Stem Seals (8)
  • 19301709 Valve Stem Key (16)
  • 12552126 Valve Rocker Arm Studs (8)
  • 10168519 Valve Guides (8)
  • 12346004 Valve Rocker Arm Stud Sealer

Notes: The heads can be used on any 4.00-inch bore Small-Block with the standard-flow coolant system.

NOT for use on Gen II 1992-1996 LT1/LT4 engines with reverse-flow cooling system.

Previously was GM P/N 12464298, 19300955

Sold individually.




Fast Burn Aluminum Cylinder Head Assembly

19300955 Chevrolet Cylinder Head

Chevrolet Performance’s Fast Burn 23-degree cylinder heads deliver maximum performance for Small-Block engines. An aluminum head casting ヨ distinguished by Chevy Bowtie logos at each end ヨ and a valvetrain with high-rpm, LS-style beehive-type valve springs stretches the performance range of the heads to enable greater power at a higher rpm! Fast Burn technology delivers more horsepower by increasing cylinder pressures, which maximizes the air/fuel mixture’s combustion. The 62cc combustion chamber is designed for use with flat-top pistons. The CNC-machined Fast Burn heads require no additional porting for optimal performance, so all you need to do is bolt them onto your Small-Block and go!

Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to