- Oct 4, 2014
- Reaction score
- Minnesota, USA
- My Car
- 1972 H code fastback Boss 351 clone
So I got a 4 bolt, 4bbl Cleveland from my father that was a running engine when he took it out of the car. It should be a 73 engine because that is what his car is and it had 73 motor mounts on it so I'm guessing it's the small valve OC heads. He said it ran strong and didn't smoke when he took it out, he just wanted more HP so he built a different engine. Upon initial inspection everything looks pretty good. Heads are still pretty clean, no sludge buildup. And the rotating assembly looks very clean. I only have the timing chain cover, valve covers and oil pan off so far. My question is what should I look at to see if I can use the rotating assembly as-is? I don't really want to pay for a full rebuild as this will basically be a backup engine. I have a good source for head rebuild, and I have my own cam bearing installer so I can do a new cam and lifters. I'm thinking I need to plasti-gauge the journals (rods and mains) and check cylinder wall specs. Should I run all new bearings or leave them as is since it worked the way it sits? If I remove the pistons I do have ring groove cleaners so I could run new rings. I do also have a ring grinder. This will be mainly a stock engine so I don't have to go too crazy with parts. Give me your opinions, I'm really torn on this one. I don't NEED another engine BUT....... this is a standard bore 4 bolt block that I think has a lot of life left in it. I will know more as I tear it down but right now it looks like a good candidate for just a refresh and not a full re-build.