Quote:
Originally Posted by Jstock85
I am stock rebuilding a 4.8 to go in an 85 c10. Got the block back with new cam bearings and cleaned up cylinders. I got a set of standard rings which I assume are drop in. The specs say multiply .0040 time 1 inch of the borer the minimum so my question is have I figured correctly...
.0040 x 3.78 = .015
The specs do not specify any difference between the top and 2nd ring so I assume I should gap them the same?
Any information/advice/suggestions will help. Thanks!
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That sounds about right I would have to check my service manual . Typically top rings are gapped alittle larger 020-.025" depending on boost or nos etc . I just rebuilt my 6 litre not long ago and the rings were gapped on the high end like 025"-030" they were not file fit rings like Ive always ran in other engines BBC/sbc etc . My bores were within spec for wear and i tried two different sets/make of rings no change. I called hastings about the excessive gaps and they told me run them .. So dont be supprized if your gaps are on the high end for clearance