www.superchevy.com/how-to/engines-drivetrain/1404-three-cam-tests-on-an-ls3-engine-bumpstick-boomerang/
www.mustangandfords.com/how-to/engine/mmfp-1209-ported-coyote-heads-dyno-test/
I would say that cams increase power way more than "20-30hp" on both engines. They both make good power, with the LS3 making even more tq output. I attribute this to the extra displacement.
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2011 2SS 6A Red Jewel Metallic, Vararam Tune CAI, Magnaflow 3" Competition c/b, Speed Engineering 1-7/8 LT's, Circle D 5C, M/T 275/40R20 S/S, HPTuners tune by Ryan@GPI
12.3 @ 112 ACM as of 12/22/19
Gone on 12/28/19 R I P
2010 2SS 6M Victory Red/Black (old ride)
CAI intake, Speed Engineering 1 7/8" LT's, X4 base tune, Flowmaster Outlaw axle-back.
12.6 @ 115 SAR as of 9/19/15
Gone but never forgotten.
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