Quote:
Originally Posted by Matts94Z28
I can get you a set of RayRay ported 241's for not much more...
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not much more? those heads don't have seats, guides, valves, springs, locks, seals or even freeze plugs
ported 5.3 heads flow more than stock 243/317s
ported 5.7 heads flow somewhere between 275-285
ported 243/317s flow right around 300
savings on square ports as I only do the exhaust and chambers, porting the intake side reduces low lift numbers and will put out huge numbers over .600 lift but unusable for most guys