Quote:
Originally Posted by sshep
Circa 2002 Offy head castings running NGK B4L's for almost 20 years. MSD dizzy and MSD6AL box. 3-97's on an offy intake. 286-50 Merc Block.
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That'll work as long as you don't mind shrouded plugs and a hit in performance.
One question : have you ever checked the spark plug fitment with the heads off? It should look like this.