Best Stock BB Heads?
Then, opening up the pushrod pinch and finishing off the exhaust port will get you to 251/[email protected] lift.
Those numbers are all using the stock 2.08/1.74 valves.
I can’t tell you how many reworked stock BB Mopar heads I’ve tested over the years that didn’t flow as good as these(and most had more work done to them)........ and often they aren’t any better than if they’d had no porting(or sometimes even flowed less than a head that had no porting at all).
For a little perspective.....
The last set of Stealths I checked were 260/[email protected] ootb.
A set of 906’s with a fresh valve job and bowl blend(done by a shop, not by a diy’er) were 224/[email protected] lift.
Then, opening up the pushrod pinch and finishing off the exhaust port will get you to 251/[email protected] lift.
Those numbers are all using the stock 2.08/1.74 valves.
I can’t tell you how many reworked stock BB Mopar heads I’ve tested over the years that didn’t flow as good as these(and most had more work done to them)........ and often they aren’t any better than if they’d had no porting(or sometimes even flowed less than a head that had no porting at all).
For a little perspective.....
The last set of Stealths I checked were 260/[email protected] ootb.
A set of 906’s with a fresh valve job and bowl blend(done by a shop, not by a diy’er) were 224/[email protected] lift.
