Edelbrock Performer RPM Small Block Chevy Alm.
2.02 Intake & 1.6 Exhaust
Lift=Valve lift while testing Previous CFM=original flow
CurrentCFM=flow after porting % Gain=flow improvement in
percent
Exhaust/Intake=Relationship between intake & exhaust flow
Flowed @ 28 in.
Intake Port Test Results
Lift
Previous CFM Current CFM
% Gain Exhaust/Intake
| 0.050 | 34.0 | 37.6 | 10.4 | 75.3 |
| 0.100 | 66.6 | 73.3 | 10.0 | 79.9 |
| 0.200 | 134.6 | 143.6 | 6.7 | 76.0 |
| 0.300 | 210.9 | 231.9 | 1.4 | 65.3 |
| 0.400 | 219.9 | 231.7 | 5.4 | 73.2 |
| 0.500 | 225.8 | 240.7 | 6.6 | 75.1 |
| 0.550 | 225.8 | 246.6 | 9.2 | 75.3 |
| 0.600 | 227.3 | 248.1 | 9.2 | 77.4 |
| 0.650 | 228.8 | 251.1 | 9.7 | 77.7 |
Exhaust Port Test Results
Lift
Previous CFM Current CFM
% Gain Exhaust/Intake
| 0.050 | 26.3 | 28.3 | 7.7 | 75.3 |
| 0.100 | 58.1 | 58.5 | 0.7 | 79.9 |
| 0.200 | 102.7 | 109.1 | 6.3 | 76.0 |
| 0.300 | 136.4 | 139.6 | 2.4 | 65.3 |
| 0.400 | 155.7 | 169.6 | 8.9 | 73.2 |
| 0.500 | 160.0 | 180.8 | 13.0 | 75.1 |
| 0.550 | 166.4 | 185.6 | 11.5 | 75.3 |
| 0.600 | 176.0 | 192.0 | 9.1 | 77.4 |
| 0.650 | 179.2 | 195.2 | 8.9 | 77.7 |
Work Done. Porting, flow test, valve job, set up springs. $805.00 4/01