Originally Posted By 70AARcuda
w5 had blue plugs on the end...W2 some had freeze plugs on the end..



And not all W5 heads had the blue plugs. Just later castings did

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8