CYLINDER HEADS - Pro-Port™ Raw & Semi-Finished Heads - Chevrolet SB2 & ROX

Chevrolet SB2 & ROX Applications
These new Victor series cylinder heads are serious competition cylinder heads designed for maximum effort dirt track and drag racing applications. They have been cast with extra material in the intake and exhaust ports and combustion chambers to allow professional CNC porting, along with extra material on the deck to allow for fine tuning of the combustion chamber. These high-quality castings are treated to HIP processing for superior casting density and extreme durability. Victor series SB2 is for engine blocks with 4.4" bore spacing and accepts GM SB 2.2 style valve covers only. ROX is for engine blocks with 4.5" bore spacing and accepts GM ROX style valve covers. Victor ROX head #777668 features raised intake and exhaust spring pockets and are machined to 1.450" diameter.

Please note: These heads require professional preparation.
7778869
* Click on part number to see image
CHEVY SERIES: SB2 & ROX PRO-PORT RAW
 
Description Chamber
Size (A)		 Part# HIP'd Angle Intake
Port Entry		 Exhaust
Port Exit		 Valve Sizes (B)
Intake | Exhaust		 Valve Pierce Points (X,Y) (C)
Intake | Exhaust		 Valve Spacing Valve Seats Valve Guides
Victor ROX 20cc 777668* Yes 10.5° x 3.4° 1.50" x 1.05" 1.55" x 1.32" 2.20" / 1.60" (0.625", -0.413") (-1.128", -0.330") N/A None None
Victor ROX 20cc 777669* Yes 10.5° x 3.4° 1.50" x 1.05" 1.55" x 1.32" 2.20" / 1.60" (0.625", -0.413") (-1.128", -0.330") N/A None None
Victor SB2 20cc 777869* Yes 10.5° x 3.4° 1.50" x 1.05" 1.55" x 1.32" 2.20" / 1.60" (0.636", -0.450") (-1.144", -0.266") N/A None None
(a) Unfinished size
(b) Maximum size (each valve; may not be used together)
(c) Coordinates provided are for cylinders #1, #3, #6, #8. Invert the "X" value for cylinders #2, #4, #5, #7.
(*) Not legal for sale or use on pollution controlled motor vehicles.
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