The aftermath of freeway speeds on a 68 340 with original rockers. The engine is in a 71 Sweptline. The springs are setup for a purple 484 cam. The cam is now a Howards 710931-12 with the 484 springs. Planning on replacement rockers from Mancini. Would like adjustable rockers but money is an issue. Anybody have pos/neg opinions on there rockers? Thanks everyone for your help.
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