Dominique Williams
Member
Hi I currently have a 1978 440rb engine thats been bored .30 over it’s a low compression engine i can’t remember the ratio but i was told they are low I also have edlebrock estreet heads, stock manifolds, aluminum intake manifold, Hughes whiplash low compression cam, aluminum water pump set up, msd distributor and ignition coil, dual electric fans and edlebrock avs2 carb. Im looking for the best spark plugs and heat range for this (street/freeway driven)