What plugs?

[69protour]

What plugs have you guys had the best luck with? I've got a sbc 383, Dart angle plug 200's, 64cc, wisco D dish pistons, Eagle crank, Solid flat tappet cam, specs dur. @.50 are, 251 intake and 256 exhaust. Lift is 538 int, 544 exh. LCS 106. Compression is 9.6. Running a 650 Mighty Demon with a Victor Jr. Hooker Super Comps. The plugs I have in there now are Champions, RV15YC4. He said they were a pretty cool plug. Thats what my engine builder put in there? The ignition I have is the new MSD E-curve and a Blaster 2 coil. I'm just wondering what plugs might make it purrr just a bit better. Thanks guys. Trond.

[yody]

I prefer NGK's. You can even call them, and tell them all those specs and they will recommend a plug. Get the V powers. they are moderatley priced too

[Matt@RFR]

Exactly what Cody said. Call them for a recomendation. NGK V power plugs regularly go a full season in the 410" sprint cars and dirt/asphalt late models around here. Some of the 410's are pushing 900hp, and the late models are mostly in the 850hp range.