Originally Posted by B1MAXX
Is there a reason you have to run a non projected tip?
If not the ar3911/10 is the normal projection plug.

ar3933=ar3910

ar3934=ar3911



I have always used projected on flat top motors and seen some gains vs the non projected. up

67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174