Tim, It sounds like 292 duration but that seems high for a lift of .448. Maybe it is a solid cam, I don't know. The idle Lumpiness is from the LSA that Randy mentioned. I believe most of the sound is from the duration under acceleration. What brand cam is this?
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Jim
1970 C/10 Fleetside w/Ghost Flames
Lowered 4.5" front and 4" rear (Raked)
355/350 Turbo w/shift kit
10" Redneck Performance Verter w/2500 stall
Hooker Super Comps part#2808-1
Performer RPM Air-Gap
12 Bolt w/3:73 gears- Eaton Posi
Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads
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