CYLINDER HEADS - Pro-Port™ Raw & Semi-Finished Heads - LS-Series Head

LS1 GEN III CHEVROLET PRO-PORT RAW (15° VALVE ANGLE)
A bare, unported version of the Edelbrock/Lingenfelter LS1 head #61969, these heads fit 1997 & later GM Gen III small-block engines from 4.8L to 6.0L. #619969 includes valve guides only (not installed).
Chamber Size (a) Int. Port Dim. (b) Exh. Port Dim. (b) Valve Sizes in/ex. (c) Single HIP'd
38cc 0.82" x 2.80" 1.41" x 1.02" 2.08" / 1.64" #61989* #619869*
38cc 0.82" x 2.80" 1.41" x 1.02" 2.08" / 1.64" #61999* #619969*

ADDITIONAL SPECS FOR PRO-PORT RAW & SEMI-FINISHED HEADS
 Valve Position   
 
   
   Intake Pierce Point Exhaust Pierce Point        
Head Valve Angle Xiv Yiv Xev Yev Spacing Valve Seats Guides
61989 15° 0.820 0.024 1.090 0.024 1.910 Installed Installed
61999 15° 0.820 0.024 1.090 0.024 1.910 None Installed
(a) Unfinished size
(b) Dimensions at port entry/exit
(c) Maximum size (each valve; may not be used together)
(*) Not legal for sale or use on pollution controlled motor vehicles.
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