I never thought about 1.65 rockers.I'm running HS 1.5 rollers now.On the chassis dyno my engine peaked at 4900 rpm,397rwhp,then nosedived.Similar to what Cliff sees with the XE lobes.I'll call SD about heads.I see guys on here running the 290b in the 10s/11s maybe i just need to tune and sort out my current combo to get the most from it.It's never really been dailed-in,just a dist.recurve.
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