1966 283 stock compression??
 

guys,

I am trying to decide if my bone stock 66' 283 needs to be rebuilt or not, it is currently on an engine stand, my question is this: what compression reading should I be getting on my gauge? I am rotating it by hand.

would it be worth putting the starter back on it and rigging it up to use for rotating the motor?

Re: 1966 283 stock compression??
 

By hand will be way to slow. You can do a leak down test on the stand. Will give you good info in the condition.
Jimmy

Re: 1966 283 stock compression??
 

can no one tell me what i should be seeing for compression on a stock 283 ??

Re: 1966 283 stock compression??
 

With carb butterflies open at cranking speed a fresh 283 outta show you around 150 psi. P.P. heads may be 5-10 psi higher.

Re: 1966 283 stock compression??
 

Around 140-150.

Re: 1966 283 stock compression??
 

Yeah my 283 had true flat tops w/ only two valve reliefs in them & shim gaskets.