swhandyman
New member
"I rebuilt my 1974 OMC 225 307
"I rebuilt my 1974 OMC 225 307ci Chevy engine not long ago. My power has been down ever since, most notably when loaded. I had a few distractions, like a saturated float in my new Edelbrock carb, but these fixes didn't help. I finally did a compression test on all cylinders yesterday and came up with 140 lbs dry/ 145 wet on each with some small variance. My compression before rebuild (when healthy) was 165 lbs wet and this is what is stated in the manual. Could it be that the short block rebuild mechanic put in the wrong pistons? I didn't notice anything unusual when I put on the heads. I believe, but don't know, that he re-used the connecting rods."
"I rebuilt my 1974 OMC 225 307ci Chevy engine not long ago. My power has been down ever since, most notably when loaded. I had a few distractions, like a saturated float in my new Edelbrock carb, but these fixes didn't help. I finally did a compression test on all cylinders yesterday and came up with 140 lbs dry/ 145 wet on each with some small variance. My compression before rebuild (when healthy) was 165 lbs wet and this is what is stated in the manual. Could it be that the short block rebuild mechanic put in the wrong pistons? I didn't notice anything unusual when I put on the heads. I believe, but don't know, that he re-used the connecting rods."