OK, so im now finishing my project, except theres on little problem my 302 wont turn all the way by hand, and im to scared to try and turn it over. i've got dirt in the #1 piston im thinking it might be a dirt dobber made a nest in there, but if thats not it what are some other possibilities?

 

The piston has frozen to the wall?

 

no it'll go all the way down, but wont go all the way up....

 

sounds like its time to pop the heads off and see whats happening, hopefully it only costs you a head gasket set (cheap enough)

 

i was trying not to do that but looks like im going to have to.

 

Yea, if it wont turn,,, do not force it under any circumstances.

If you have not pulled the plugs yet, you might do so, if the engine has water or fluid down a cylinder, it will not turn against compression.

 

+1 on the rlight rust id pour marvel mystery oil in all the cylinders let it sit for a week or so then try turning it over

 

OK, i looked at it again and it looks like a dirt dobber built a nest in the #1 cylinder, could that be whats stopping it...there is oil in the motor, but it should turn all the way over shouldnt it?

 

your gonna have to pull that one head to get him outta there

 

can i do it form the exhaust manifold holes?