Quick spark plug question?
Quick spark plug question? Just a quick question what is everybody else running? I'm leaning towards NGK TR6's
My setup 355 bored, honed and blue printed. Forged eagle H beams rods, forged Mahle pistons, GM stock crank, cr 10.5:1, lunati Cam: Duration (Int/Exh): 282/290, Duration @ .050 (Int/Exh): 231/239, Gross Valve Lift(Int/Exh): .535/.550 LSA/ICL: 110/106, heads milled and mild ported, comp cam magnum 1.6rr, Holley 58 mm tb, crane fireball ignition, bosh 42 lbs injectors, pacesetters LT headers.
My setup 355 bored, honed and blue printed. Forged eagle H beams rods, forged Mahle pistons, GM stock crank, cr 10.5:1, lunati Cam: Duration (Int/Exh): 282/290, Duration @ .050 (Int/Exh): 231/239, Gross Valve Lift(Int/Exh): .535/.550 LSA/ICL: 110/106, heads milled and mild ported, comp cam magnum 1.6rr, Holley 58 mm tb, crane fireball ignition, bosh 42 lbs injectors, pacesetters LT headers.
In my 355 I run the NGK TR5 plugs. The TR6 was too cold for my setup and I'm running 11.4:1 for compression. Your CR is about what a stock LT1 has and the TR5 is close to a stock heat rating. I would suggest starting but be sure to check your plugs and read them to see if that is correct. No one can say 100% what plug to run, you need to run it and read the plugs and change the heat rating from there
