Ryan's Dart is up and running with the Erson regrind cam in it. 510 lift / 282 duration. The spec sheet for the cam shows .023 hot for both intake and exhaust clearances. Why are they the same? I thought the exhaust was usually about .010 more clearance than the intake.

Thanks, Rick

Rick
Each Cam Co. Set the lash up different. It also changes from grind to grind. Remember that its only a starting point and you can "play" with your lash to get more or less from your cam. It not a BIG change but a change none the less.
Frank

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73 Duster - Race Car
66 Dart Wagon - DD
178" FED
82 D150
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Start with the cam grinder specs....then when the motor is running well try varying the lash for smooth idle and power production. I generally vary the lash about 2 thou each trial.

I ended up about 1-2 thou tighter on my Erson 280/270 (intake and exhaust)

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Yeah....Im the one who destroyed this rare, vintage automobile.....

Well I will have to loosen up the intake to their specs and start there. I'm at .015 and .023 now. It idles pretty well after it is warmed up and I have about 14-15" vacuum. Is that about where I should be with a cam this size.

Thanks,
Rick

That is quite good vacuum for a cam that size.

Lou

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