unless the hydralic cam is alot larger.
or the aluminum heads have alot of work done.
my vote is the solid cam 475" makes more pwer.
are those iron heads cleaned up?
cheapst

365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
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