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Has anybody here ever ran Comp cam #XE274H-10? Advanced Duration of 274/286, Duration at .050 230/236 with lobe seperation of 110 and 490 lift. The reason I am asking is I would like to know if you had trouble setting the idle mixture. Thanks in advance
 

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No, idle is fine @900 rpm. This is in a 383 with a Q-Jet and 35* total mechanical timing @ 2600 rpm. I do have the vacuum can (another 15*) hooked to the manifold, not ported, vacuum port.
 

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I am also running a xe274 H in a Chevy 383. I am running an Edelbrock 750 and had no problems setting the idle mixture.

Jordon
 
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