Ran throught and did a compression test and a leak down test. Here is what I found.
Compression test cam back with all at 120 except #4 which was at 100
Leakdown was all good except #6 which dropped 30%
So dropped the head and here is what I found so far,this is #4. #6 I would assume is a broken ring or piston out of view, no scoring of any cylinder.
Plan: I have a 1978 truck motor, just ran a leak down test, looks good. Going to cam it ( I think small mechanical roller), put some 516's with 2.14/1.88's, slight mill for surface, No2, pull my power steering off when I do the swap, put an electric water pump on and go racing - I am making it into high 11's by end of summer.
I will pull this motor and rebuild
Compression test cam back with all at 120 except #4 which was at 100
Leakdown was all good except #6 which dropped 30%
So dropped the head and here is what I found so far,this is #4. #6 I would assume is a broken ring or piston out of view, no scoring of any cylinder.
Plan: I have a 1978 truck motor, just ran a leak down test, looks good. Going to cam it ( I think small mechanical roller), put some 516's with 2.14/1.88's, slight mill for surface, No2, pull my power steering off when I do the swap, put an electric water pump on and go racing - I am making it into high 11's by end of summer.
I will pull this motor and rebuild