Performer RPM Buick- CNC PORTED
These are CNC ported versions of Edelbrock's 60049 cylinder heads for 455 Buick. These heads are disassembled, fully CNC ported including the chambers, given a competition Valve Job, decked, and reassembled using the Stock Edelbrock hardware (springs, locks, retainers etc) and are great with most hydraulic cams. We also offer a CNC Version with all upgraded hardware for mechanical cam applications. Please select optional items below. 2" Headers required.
Designed for 400, 430 and 455 c.i.d. Buick engines, these Performer RPM cylinder heads are available fully assembled and ready to bolt on or bare for use with your own valve train components. Features include high-quality stainless steel 2.125" intake and 1.75" exhaust valves, 68cc combustion chambers and high flow 215cc intake and 130cc exhaust ports. Intake and exhaust runners are hand blended in the bowl area and the intake entries and exhaust exits are cnc profiled for increased air-flow. These heads include adjustable rocker stud and guide plate set-up for use with small-block Chevy 1.6:1 style adjustable rockers. The casting is manufactured of A356 aluminum and heat treated to T6 spec for superior quality. An extra-thick 5/8" deck and Heli-coil threaded inserts offer improved durability. Made in USA.
| Combustion Chamber |
68CC |
| Intake Runner |
215CC |
| Exhaust Runnner |
130CC |
| Intake Valve Dia |
2.125 |
| Exhaust Valve Dia |
1.750 |
| Valve Stem Dia |
11/32 |
| Guide Material |
Bronze |
| Valve Spring Diameter |
1.550 |
| Max lift (Hydraulic) |
.600 |
| Rocker Studs |
3/8 |
| Guideplates |
Hardened Steel |
| Pushrod Diameter |
3/8 |
| Valve Angle |
15* |
| Exhaust location |
Stock |
| Spark Plug |
14MM, 3/4 reach gasketed |
| Deck thickness |
5/8 |
| Made in |
USA |
CNC Ported flow numbers (SF600 bench, 28" water, 4.350 bore)
| LIFT |
INTAKE |
EXHAUST |
EXHAUST w/pipe |
| .100 |
74 |
55 |
56 |
| .200 |
164 |
107 |
113 |
| .300 |
237 |
152 |
159 |
| .400 |
289 |
188 |
200 |
| .500 |
321 |
215 |
230 |
| .600 |
323 |
224 |
244 |
| .700 |
326 |
227 |
247 |
| .750 |
329 |
227 |
247 |
(These heads are ported and assembled to order. Please allow up to 2 Weeks turnaround) |