GM 88958667 (R0X SB2.2) Castings
Intake Runner Volume:   288cc
Combustion Chamber Volume:   50cc

Intake Valve Angle: 11 deg. x 4 deg.
Intake Valve:      2.180 dia. x 5.970 length

Exhaust Valve Angle: 7 deg. x 2 deg.
Exhaust Valve:  1.610 dia. x 5.820 length

4.500 Bore Spacing

Distance from floor to deck at gasket:    2.275
Intake port opening at gasket:        2.0H x 1.6W
Intake min. cross-sectional dim.:    2.83 sq.in.

Notations:
Valve lengths are for an installed height of 2.050
Pushrods are clearanced for the most commonly used rocker systems

LIFT	INTAKE	EXHAUST
.200	147	119
.300	224	174
.400	293	213
.500	336	241
.600	373	254
.700	382	262
.800	386	265
Flow #'s by Weld Tech - CFM @ 28"

 

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WELD TECH 1789 South Green Street Brownsburg, IN 46112 (317) 852-4450 Fax: (317) 852-5291