how much back and forth movement can my crankshaft have.

[troy.70R/T]

I was wondering how much back and forth movement is acceptable in a 383 engine. The engine runs good but should there be any slop at all.

[don duick]

.006 inch,  ie six thou

[troy.70R/T]

Thanks Don but thats not what I wanted to hear

[c00nhunterjoe]

How much do you have and what prompted the question??

[A383Wing]

by back & forth, do you mean turning the crank at the front bolt or are you pulling & pushing the crank in and out at the pulley?

[fy469rtse]

He's talking about movement in and out , clearance to thrust centre crankshaft bearing ,
? New engine ,

[troy.70R/T]

yes I am talking about the thrust not the rotation. I asked the question cause it just seemed to have to much movement . I was putting a gasket kit in the motor and just wanted to know. I might just use the other 383 that I have instead of this one. I wanted to use the 65 383 and save the 67 383 I figured the 65 might have higher compression ( more HP) than the 67. the 65 has closed chamber heads and the 67 had open chamber heads on it.

[A383Wing]

measure it and see what it actually is...don't guess as to what might be "too much"