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Username Post: It was the head gasket        (Topic#373995)
Dans55 
Newbie
Posts: 37

Reg: 03-03-22
11-07-23 01:11 PM - Post#2863940    

Finally got the head off and in the lower left corner bottom of the head gasket there is a 1/2" wharp. That took a load off my mine. Damn those cast iron heads are heavy. Just typical carbon on the piston tops and under the head. Question, the pistons are not flat top but valve indentations. Did Chevy use those type of pistons for their engines back in 1970?
Still debating if to change cam and heads. I'm sort of leaning towards that.



 


Shepherd 
Valued Contributor
Posts: 3340

Loc: Lake George, NY
Reg: 11-11-15
11-07-23 03:02 PM - Post#2863944    
    In response to Dans55

Are they dished also?



 
Dans55 
Newbie
Posts: 37

Reg: 03-03-22
11-07-23 06:19 PM - Post#2863949    
    In response to Shepherd

3/4 of the piston top,where the valves are.



 
Shepherd 
Valued Contributor
Posts: 3340

Loc: Lake George, NY
Reg: 11-11-15
11-08-23 05:24 AM - Post#2863955    
    In response to Dans55

Low compression design, usually about 8.5, pretty common in those years.



 
Dans55 
Newbie
Posts: 37

Reg: 03-03-22
11-08-23 06:41 AM - Post#2863961    
    In response to Shepherd

You think a new cam and aluminum heads should beef up the torque and hp. I got to pull the oil pan off as its dented anyhow, to see if it's 4 bolt. Can't see doing all this work for a 2 bolt. Dent is right under the oil pump. Hope that's not damaged.Glad I didn't pay much for this beater. Don't care how it looks, just want the complete drive line to work and sound good. Have a good lopey rumble.



 


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