The following special custom cams have been dynoed and the proven horsepower/torque numbers are listed. All require an adjustable valve train.
[email protected] [email protected] Gross/Lift Lobe/Sep
252/256 278/282 .596/.608 114/111
This mechanical flat tappet cam in a 466 cu in 455 Olds engine with DMR with DMR ported aluminum heads ported heads made 577.9 horsepower @ 5500 RPM and 596.3 torque @ 4900 RPM using 11:1 compression on 91 octane pump gas. Needs ported heads that flow in the 355 CFM range. Excellent for strip use. Needs a 3000+ converter, intake, headers and 3.90+ gears.
