ported iron J heads castings done up like a t/a
lift....Intake exhaust.... flow
200.. 125.08...100.30
300 .. 191.25...136.88
400 ,..244.80...153.4
450 .. 255.18...158.12
460 .. 257.20...159.30
500 .. 223.78...162.84
...................165.20
...................165.20
average flow on intake 213.79 (to .460" lift)
average flow on exhaust 141.60 (to .460" lift)
the exhaust computes to a 93% of the intake average
it has no pushrod pinch. intake window opened to remove pinch
and epoxy in the roof at the valve guide boss to get air to flow on both sides of the valve guide boss into the bowl.
Last edited by cheapstreetdustr; 08/25/16 10:28 PM.
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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