GM L92/LS3 CNC ported Cylinder Heads 1.0

September 25, 2020 by  
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SKU: ed54b33e0678 Category:



GM L-92, L-76, or LS-3 engines
Bolt on 25-30 horsepower to your L-92, L-76, or LS-3 engine!
We take the already good factory heads and incorporate our
CNC port program and custom 5 angle valve job to make a very good factory head perform great. We also include our dual .650″ lift spring with titanium retainers for outstanding reliability and performance with most any cams.

Basic Package includes-
Full CNC ported intake and exhaust ports
Custom 5 angle valve job
Hand finishing of Valve job into Porting
Flow test with included sheet
Standard 68cc Chamber
Blueprint ground intake and exhaust valves with necessary backcuts
Deck surface finished with CBN cutter for ultimate surface finish
Blueprint assembly in which all spring heights and pressures are checked

Optional machining, springs, or aftermarket valve packages available.

Lift Intake Exhaust
0.100 67 53
0.200 150 118
0.300 226 173
0.400 287 219
0.500 332 247
0.550 347 255
0.600 353 264
0.700 368 266
* Tests conducted at 28″ of water, radius plate int. 1.875″ x 4.0″ exh. pipe

Additional information

Weight 60 lbs


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