misterp Posted November 17, 2008 Report Share Posted November 17, 2008 Progress Quote Link to comment Share on other sites More sharing options...
zippy Posted November 17, 2008 Report Share Posted November 17, 2008 Very nice setup. I agree that you did pick more cam than you need, but still cool. I haven't seen very many .030 over LS2 blocks, very interesting also. How much liner is left after you go that much over? Quote Link to comment Share on other sites More sharing options...
mean05 Posted November 17, 2008 Author Report Share Posted November 17, 2008 Very nice setup. I agree that you did pick more cam than you need, but still cool. I haven't seen very many .030 over LS2 blocks, very interesting also. How much liner is left after you go that much over? its not .30 over it has a 6.25 stroke instead of the 5.988 still the stock bore...actually just found that out 30 min ago Quote Link to comment Share on other sites More sharing options...
misterp Posted November 17, 2008 Report Share Posted November 17, 2008 its not .30 over it has a 6.25 stroke instead of the 5.988 still the stock bore...actually just found that out 30 min ago ??? you mean the connecting rods are 6.25? Quote Link to comment Share on other sites More sharing options...
mean05 Posted November 17, 2008 Author Report Share Posted November 17, 2008 ??? you mean the connecting rods are 6.25? yes sir therefore it gives the motor a longer stroke Quote Link to comment Share on other sites More sharing options...
zippy Posted November 17, 2008 Report Share Posted November 17, 2008 Rod length does not change cubic inch or stroke. Quote Link to comment Share on other sites More sharing options...
mean05 Posted November 17, 2008 Author Report Share Posted November 17, 2008 (edited) Rod length does not change cubic inch or stroke. explain? i could have misunderstood him when he told me... Edited November 17, 2008 by mean05 (see edit history) Quote Link to comment Share on other sites More sharing options...
black00chev Posted November 17, 2008 Report Share Posted November 17, 2008 Rod length changes compression ratio if I remember right. The bore size and length of the stroke itself determines cubes. I dont remember how everything factors, I just remember thats what does it lol. Quote Link to comment Share on other sites More sharing options...
mean05 Posted November 17, 2008 Author Report Share Posted November 17, 2008 i thought the piston determined the compression ratio along with the cc on the head Quote Link to comment Share on other sites More sharing options...
hellbents10 Posted November 17, 2008 Report Share Posted November 17, 2008 Yes but a longer rod will move the piston closer to the deck or out of the hole is the compression height of the piston is not changed. CI is determined by the cylinder volume meaning bore stroke, and number of cylinders. Rod length does nothing but put the piston where you want it to be in relation to the deck height. running the 6.25 rod did nothing but reduce compression height and move your pin up further. Quote Link to comment Share on other sites More sharing options...
hellbents10 Posted November 17, 2008 Report Share Posted November 17, 2008 Sorry forgot to add nice build! Quote Link to comment Share on other sites More sharing options...
zippy Posted November 17, 2008 Report Share Posted November 17, 2008 That's correct. The stroke is determined by the crankshaft and the bore that the piston goes into. The connecting rod determines how far away from the crankshaft the piston pin is. This will increase or decrease the piston dwell time and side load of the piston. Compression ratio is calculated from piston to deck height, gasket thickness (crushed), cylinder head combustion chamber, stroke of the crankshaft, and piston design (dome/dish/flat top/etc). Not picking on you, I was just curious on the bore how they did it with the liners really. Quote Link to comment Share on other sites More sharing options...
mean05 Posted November 17, 2008 Author Report Share Posted November 17, 2008 well i called it's bored .10 with the longer rod...we called Diamond and they gave us the compression ratio with my 317 heads and its at 9.4:1....i was just misunderstood when he originally told me....im no machinist and try to stay away from the bottom end on motors and leave that to the peole who really know which isnt me lol Quote Link to comment Share on other sites More sharing options...
mean05 Posted November 17, 2008 Author Report Share Posted November 17, 2008 Yes but a longer rod will move the piston closer to the deck or out of the hole is the compression height of the piston is not changed. CI is determined by the cylinder volume meaning bore stroke, and number of cylinders. Rod length does nothing but put the piston where you want it to be in relation to the deck height. running the 6.25 rod did nothing but reduce compression height and move your pin up further. the pistons were custom cut to accomodate the longer rod Quote Link to comment Share on other sites More sharing options...
zippy Posted November 17, 2008 Report Share Posted November 17, 2008 That makes more sense, it should be a 366 then. Going to a .030 over on an LS2 block just seemed like it would make the liners way too thin. Should be damn fun either way. Quote Link to comment Share on other sites More sharing options...
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