Small Chevy cylinder head airflow
(3.766-inch bore)
Lift (inch)intake (cfm)exhaust (cfm)
0.1006153
0.200127105
0.300180142
0.400216160
0.500242 172
0.600242180
Performance Progression
Baseline
181 lb-ft @ 3,750 rpm
158 hp @ 5,070 rpm
Quarter-mile
60-ft: 2.47
1/8-mile: 10.63 @ 66.27 mph
1/4-mile: 16.59 @ 83.15 mph
Add after-cat and cat
192 lb-ft @ 3,600 rpm
166 hp @ 4,800 rpm
Add TES headers
198 lb-ft @ 3,700 rpm
175 hp @ 4,900 rpm
Add Trick Flow heads, cam, Performer intake, K&N filter
226 lb-ft @ 4,400 rpm
211 hp @ 5,150 rpm
Quarter-mile
60-ft: 2.273
1/8-mile: 9.884 @ 69.61 mph
1/4-mile: 15.40 @ 90.53 mph