which spark plug suitable for my engine
Hi
I need help in choosing suitable spark plug for my engine
The specification for my engine as following
SBC 383 with 10.8:1 CR
AFR cylinder head 210(AFR-1054)
Solid roller camshaft (LUN-60132) with 1.6 rocker arm
Advertised Duration 273 int./279 exh
Valve Lift with Factory Rocker Arm Ratio 0.578 int./0.585 exh