Main >> Cylinder Heads >> Pro Topline >> Lightning >> Steel >> Small Block

 
No Longer Available.
All Pro Topline parts have been discontinued.
 
Pro Topline: The World's Most Powerful 23° Cylinder Heads
Pro TopLine Steel Small Block Cyliner Head Steel/Iron Lightning - Small Block
Outstanding Airflow
Bronze Valve Guides
All Valves are +.100 Long
Center & Perimeter Bolt on Valve Covers Accepted
 
Create some THUNDER at the drag strip with Pro Topline's Pro Lightning 23° cylinder heads for small block Chevy. Choose between Cast Iron or Aluminum - either way you still get the increased flow of multi-angle intake and radiused exhaust valve seats. In fact, Pro Topline says the  23° heads out flowed similar aluminum and cast iron heads on the market by 5% for a BIG improvement in low-end torque and top-end horsepower. Lightning heads also feature an improved water jacket design, which increases flow around the plugs for improved combustion, angles plug locations, and a three angle valve job. Best of all,, they accept conventional piston and valve train components for easy bolt-on power. Available as bare castings or complete assemblies.
 
Kit # Description
1 with Hydraulic springs, 1.460" Single w/dampner, 110#@1.800" to .550
2 with Mechanical springs, 1.460" Dual w/dampner, 135#@1.800" to .600
3 with Roller springs, 1.540" Dual w/dampner, 190#@1.900" to .660
4 with Roller springs, 1.550" Dual w/dampner, 220#@1.950" to .720
 
Heads - As Cast (72cc chamber)
Part # Valve Size Description Bare/
Pair
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-2000-80 2.02-1.6 72cc/180/SP $579 $835 $865 $875 $959
223-2000-80A 2.02-1.6 72cc/180/AP $579 $835 $865 $875 $959
223-2000-00 2.02-1.6 72cc/200/SP $579 $835 $865 $875 $959
223-2000-00A 2.02-1.6 72cc/200/AP $579 $835 $865 $875 $959
223-2000-20 2.02-1.6 72cc/220/SP $579 $835 $865 $875 $959
223-2000-20A 2.02-1.6 72cc/220/AP $579 $835 $865 $875 $959
223-2000-35 2.08-1.6 72cc/235/SP $579 $835 $865 $875 $959
223-2000-35A 2.08-1.6 72cc/235/AP $579 $835 $865 $875 $959
 
Heads - CNC Chamber (72cc chamber)
Part # Valve Size Description Price/PAIR
Bare
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-2600-20 2.02-1.6 72cc/220/SP $669 $929 $949 $959 $1049
223-2600-20A 2.02-1.6 72cc/220/AP $669 $929 $949 $959 $1049
223-2600-35 2.08-1.6 72cc/235/SP $669 $929 $949 $959 $1049
223-2600-35A 2.08-1.6 72cc/235/AP $669 $929 $949 $959 $1049
 
Heads - Full CNC (72cc chamber)
Part # Valve Size Description Price/PAIR
Bare
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-2622-20A 2.08-1.6 72cc/220/SP $1779 $2029 $2059 $2069 $2159
223-2622-20 2.08-1.6 72cc/220/AP $1779 $2029 $2059 $2069 $2159
223-2622-35A 2.125-1.6 72cc/235/SP $1779 $2029 $2059 $2069 $2159
223-2622-35 2.125-1.6 72cc/235/AP $1779 $2029 $2059 $2069 $2159
 
Heads - As Cast (64cc chamber)
Part # Valve Size Description Price/PAIR
Bare
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-4000-80 2.02-1.6 64cc/180/SP $585 $829 $859 $875 $959
223-4000-80A 2.02-1.6 64cc/180/AP $585 $829 $859 $875 $959
223-4000-00 2.02-1.6 64cc/200/SP $585 $829 $859 $875 $959
223-4000-00A 2.02-1.6 64cc/200/AP $585 $829 $859 $875 $959
223-4000-20 2.02-1.6 64cc/220/SP $585 $829 $859 $875 $959
223-4000-20A 2.02-1.6 64cc/220/AP $585 $829 $859 $875 $959
223-4000-35 2.08-1.6 64cc/235/SP $585 $829 $859 $875 $959
223-4000-35A 2.08-1.6 64cc/235/AP $585 $829 $859 $875 $959
 
Heads - CNC Chamber (64cc chamber)
Part # Valve Size Description Price/PAIR
Bare
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-4600-20 2.02-1.6 64cc/220/SP $679 $939 $959 $969 $1059
223-4600-20A 2.02-1.6 64cc/220/AP $679 $939 $959 $969 $1059
223-4600-35 2.08-1.6 64cc/220/SP $679 $939 $959 $969 $1059
223-4600-35A 2.08-1.6 64cc/220/AP $679 $939 $959 $969 $1059
 
Heads - Full CNC (64cc chamber)
Part # Valve Size Description Price/PAIR
Bare
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-4622-20 2.02-1.6 64cc/220/SP $1795 $2045 $2075 $2085 $2175
223-4622-20A 2.02-1.6 64cc/220/AP $1795 $2045 $2075 $2085 $2175
223-4622-35 2.08-1.6 64cc/220/SP $1795 $2045 $2075 $2085 $2175
223-4622-35A 2.08-1.6 64cc/220/AP $1795 $2045 $2075 $2085 $2175
 
Heads - As Cast (50cc chamber)
Part # Valve Size Description Price/PAIR
Bare
Kit 1
Assem
Kit 2
Assem
Kit 3
Assem
Kit 4
Assem
223-5000-00 2.02-1.6 50cc/220/SP $585 $835 $865 $875 $959
223-5000-00A 2.02-1.6 50cc/220/AP $585 $835 $865 $875 $959
223-5000-20 2.02-1.6 50cc/220/SP $585 $835 $865 $875 $959
223-5000-20A 2.02-1.6 50cc/220/AP $585 $835 $865 $875 $959
 
 
 
 
 
 

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