flowed so well that—with ASE’s dual-pattern cam—the best overall power and torque curve was obtained by installing 1.5:1 rockers on the exhaust side to complement the 1.6:1 rockers used to open the intake valves.
The heads are fed by a Holley 750-cfm double-pumper carb atop an Edelbrock RPM Air-Gap intake, while an MSD distributor and Champion RC12YC plugs (gapped at 0.035-inch) ignite the spark. You’re on your own for headers, but ASE recommends 13¼4-inch primaries with 3-inch collectors, which is what it used to dyno-test the prototype assembly.
Installed on its Stuska water-brake dyno, ASE ran the prototype using a deceleration test regime (pulling it in “reverse” from the top down), which Trent feels more accurately simulates
 American Speed welds the pickup...  American Speed welds the pickup to the Melling M55A high-volume oil pump. An all-steel oil pump driveshaft adds durability and helps fight spark scatter. |  MSD’s PN 85551 billet distributor...  MSD’s PN 85551 billet distributor is recurved with a quicker centrifugal advance. For this test it was triggered by American Speed’s standard dyno ignition system—an MSD Digital 7 box. |  The Crane Energizer roller...  The Crane Energizer roller rockers’ split ratio—1.6:1 intake and 1.5:1 exhaust—broadens the torque band with the AFR heads’ efficient exhaust port. Installed by Air Flow, the hydraulic roller cam–compatible dual, 1.550-inch-od springs (with damper) develop 130 pounds on
the seat. |
 Canton’s 7-quart (with filter)...  Canton’s 7-quart (with filter) oil pan fits Camaros, Chevelles, and similar chassis. |  One example of how American...  One example of how American Speed pays attention to the details: To ensure the 5¼16-inch–od Comp Cams High Energy hydraulic roller cam–compatible pushrods (PN 7809-16) don’t bind against the guideplates, the rocker stud is torqued only after pushrod installation and alignment. |  |
 The Air Flow Research heads...  The Air Flow Research heads used on this engine feature 2.05-inch intake/1.60-inch exhaust valves, 74cc chambers, 195cc intake runners, and straight spark plugs. Angle plugs offer no power advantage with flat-top pistons, and the straight plugs clear most standard headers. | | |