New 427ci solid roller small block with AFR 227 heads I built I wanted to get a baseline on the chassis dyno. This was with no tuning whatsoever and small headers ( 1 3/4" primaries ) I have some bigger headers to go on and hopefully reach my goal of 500 RWHP, and still run nice on the street on 91 octane. This pull was only 478 RWHP
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