^ agreed !

Hello all, I’m prepping and tuning my combo with the 240’s. I’ve been watching and I’m ready to jump in for advice. Looks like it’s been a while for any replies here, but I’m keeping with fast68’s idea of making this the TF go to post.
446, TTI 2” primary, 10.9 cr, stock 240’s, solid flat tappet 268/272 @ .050 with .600, M1 untouched, 950 Holley, 4900 stall from Lenny, 4.10, 27x10.5 qtp. 3900# with me....she’s pretty thick, I know. 67 GTX
I’ll update with my new runs. As an FYI, My 2nd run ever on this combo at LVD in NY last October went 11.89 @ 115 (1.77 60) through the mufflers with a lean out condition at about 200 ft or so from the finish. That’s been fixed. Just left her in drive, launched at 1500 and let the trans shift itself at 5900 for mild initial testing.

A simple question to start with: what brand and number plugs are being run, and any recommendations for me?

For pump gas I use NGK 6987 plugs. Those are a 6 heat range OEM type plug. I think they are factory on the Jeep 4.7 engines or something. They have a projected tip and a wide gap and they seem to work pretty well in anything I run.

10.9cr...... you’re in the NGK 6 and 7 heat range area.

7’s will likely be a tad cold for street duty.

Thank you very much gents. It’ll be a couple weeks before I can get to the track but I promise to keep this updated with track results.