If you really want to step up the game here is a dyno chart from a 455 build with the Old Faithful cam mentioned above moved out on a 114 LSA. The engine was topped with 250cfm #96 D port heads and 9.3 to 1 compression.
A very well chosen flat cam with high ratio rockers and Rhoads lifters wouldn't be far behind it on the dyno. For sure a butt-load more power than going with 28cc dished pistons, ported #62's then stuffing the 223/235/110 Howards cam in there.
The first dyno run is the same engine with a Comp 224/230/110 HR cam. Not only was the power not all that impressive it also pinged on the dyno when they tried throwing some timing at it. This is another by-product of going small on the cam and tight on the LSA in the big 455 engines. They are already cramming all their power in early and strong mid-range. Cams that make them better at that deal also raise dynamic compression enough that you can run into issues trying to manage pump gas in them....FWIW.....
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https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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