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Bob, hopefully this post has lost steam
I talked to Jack Moore(Moore&Moore) over the weekend at the Columbus swap met. He said, he actually ran as good if not better with an old profile cam(R296) in his 572incher.
I still run a 70's Crane it's been in my last 3 motors. I think maybe that the rate of lift in the older grinds was much more severe at lower lifts and could have caused the valve clearance problems. my cam card
PART 66R000424 ENGINE TYPE: MECHANICAL ROLLER
SPECIAL
GRINDN R-288/4714-2S-10
ENGINE 1966-1971 PLYMOUTH-DODGE V8 HEMI 426 CU.IN.
(THREE BOLT GEAR)
VALVE SETTING: .026 EXHAUST .026 HOT
INTAKE @ CAM 4714 @ 740 ROCKER ARM
INTAKE @ CAM 480 @ 730 IN 1.57/EX 1.52 ROCKER ARM
LIFT: EXHAUST @ @
ALL LIFTS ARE BASED ON ZERO LASH AND THEORETICAL ROCKER RATIOS
CAM OPENS CLOSES ADVERTISED
.0162 EXHAUS INTAKE 56.0 BTDC 92.0 ABDC 328 ° °
TAPPET LIFT EXHAUS 98.0 BBDC 54.0 ATDC 332 °
SPRING RECOMMENDED RPM
RANGE WITH
TRIPLE DUAL OUTER MATCHING
PART 99877 MINIMUM RPM 4500
LOAD CLOSE 220 LBS 2.000 O 2" MAXIMUM RPM 9000
OPEN: 592 LBS 1.320 VALVE FLOAT 9600
CAM OPENS CLOSES MAX LIFT DURATIO
@ .050 INTAKE 37.0 BTDC 71.0 ABDC 105 ° ATDC 288 °
TAPPET LIFT EXHAUS 79.0 BBDC 33.0 ATDC 115 ° BTDC 292 °
IMPORTANT! Crane Cams continuously improves and upgrades its cam designs. In some cases this may mean that two Crane Cams with the same part number may actually be different grinds. You must check the GRIND NUMBER stamped on the front of the camshaft and check it against the Grind Number near the top of the Spec Card.
That looks real close to my cam specs..Matter of fact overlap is the same..Its the diff between 110 vs 112 LSA... I recall the youtube video of the Duster...and wow it sounds killer..
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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