Trying to get a handle on the plugs folks are running or would recommend for after market aluminum head applications, both naturally aspirated and supercharged in a big block Chevrolet.

Thanks,
Bob

I know KAAMA is running aluminum heads but I don't know what plugs he's running. If I see him I'll ask.

I run NGK 5671A-8 plugs in Dart 325 pro 1 heads. The motor is naturally aspirated with high compression and solid roller cam.

I run NGK 5672A-9 or 10's, or Champion PN 791 pro stock plugs in natural 632 with dart 360 alum heads, solid roller cam.

Rapid fire #1 in Dart 320 heads. Non supercharged.

Dave

I run A/C R43XLS in 6055 rpm performer eldebrock heads.

BT

Bosch Platinum plugs.. not sure what the number is.. Dart heads..

Champion's Race Plug C63YC, 502 blown, hydraulic roller with Dart 360 heads.

Bosch Platnum's....but I may give the NGK's a go.