360 / 390 help

360/390hp

Magnum R/T big valve cylinder heads
2.02/1.62 Stainless valves
Heavy duty valve springs
Hydraulic Roller Cam 288/292-501/513
Pistons....9.0:1 compression ratio
Single plane M1
Double roller timing chain
Center sump oil pan (Comando engine).
Holley 750