RPM

would not having mufflers hooked up effect the RPMs? also what should the fast and slow idel be(RPM wise) for an 83 chevy c10 straight 6 250

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Oh sock you crazy bastard, did you set the selector on the tach to tell it you had a 6-cylinder and not an 8-cylinder engine? If your revs seem high, that's probably why. Mufflers will not affect RPM, your idle when she's warming up (choked) should be around 1200 RPM, and your slow idle should be between 500-700 RPM.
Doc
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DAMN THAT'S FUNNY IF YOU SAY IT RIGHT!!!
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ok doc i'm not that stupid. i knew about that and set it for 6. thats the thing it doesm't rev high. when i rev it it only goes up to like 2500 rpm, but then other day when i was reving it it was hitting like 4000 rpm. but now that i don't have the muffler on it i thought thats y i wasn't hittin that anymore
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