Reply to "Rich K's New Engine"

Are these cams (1) and cam (2) a better choice for the 4v now over the 114 lobe separation cobra jet cam (3) thanks

(1) Custom hydraulic flat tappet cam ground by Bullet Cams (lobes H270/306 and H290/312), spec: 270°/290° duration @ 0.006, 222°/240° duration @ 0.050, 0.521/0.531 net lift, 105°/115° lobe centerlines, 110° lsa, 60° overlap, EVO = 80°, IVC = 60°. Speed Pro HT900 hydraulic flat tappets.

(2) Custom hydraulic flat tappet cam ground by Bullet Cams (lobes HF275/328 and H286/328), spec: 275°/286° duration @ 0.006, 223°/230° duration @ 0.050, 0.559/0.559 net lift, 103°/117° lobe centerlines, 110° lsa, 60.5° overlap, EVO = 81°, IVC = 60.5°. Speed Pro HT900 hydraulic flat tappets
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(3) Intake Lobe: #HF275/328 (CRA, designed for Ford 0.875 tappets)
Intake lobe mathematic centerline = 112° ATDC
Exhaust Lobe: #H287/3283 (CRA)
Exhaust lobe mathematic centerline = 116° BTDC
114° lobe separation angle (camshaft degrees)
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Exhaust valve opening = 79.5° BBDC
Intake valve opening = 25.5° BTDC
53° overlap
Exhaust valve closing = 27.5° ATDC
Intake valve closing = 69.5° ABDC
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275° advertised intake lobe duration
223° intake lobe duration at 0.050"
Intake lobe hydraulic intensity = 52
0.567" theoretical intake valve lift (1.73 rocker ratio)
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287° advertised exhaust lobe duration
235° exhaust lobe duration at 0.050"
Exhaust lobe hydraulic intensity = 52
0.568" theoretical exhaust valve lift (1.73 rocker ratio)
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