Thread: Help me out, thinking weird again

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Originally Posted by pat mccarthy

from 6.125 to 6.200 rod dif your looking at 075 that in the piston will let move thing ring pack down some but you can use a 043/043 /3mm ring pack or 1/16 1/16 3/16 .i would go with the 1.175 ch with the 6.200 rods. but 6.125 would be 1.250 ch and run 1/16 rings and would let you have lot of room to lower the top ring land down for NOS and you not going that way ? you want to try to stay above more the 1 inch CH if you can

Ok, so from you and Jerry I get the idea I should get a set of 6.2 billet rods and forget the aluminum rods, right????

Any particular things to watch for on bob weights doing a Chevy, or won't too light on rods and pistons be a problem??? Found a set of titanium 6.2 rods, and a couple sets of Oliver, Carillo, etc..... Billet 3.25 cranks are around, most seem to have the Honda sized rod journal as Jerry mentioned... Large radius, lightening holes, and knife edged ok???

Originally Posted by Dave Severson

Ok, so from you and Jerry I get the idea I should get a set of 6.2 billet rods and forget the aluminum rods, right????

Any particular things to watch for on bob weights doing a Chevy, or won't too light on rods and pistons be a problem??? Found a set of titanium 6.2 rods, and a couple sets of Oliver, Carillo, etc..... Billet 3.25 cranks are around, most seem to have the Honda sized rod journal as Jerry mentioned... Large radius, lightening holes, and knife edged ok???

nope in a shelf JE light GP piston there shelfs in 1.125 CH and 1.250 so a 6.250 rod or 6.125 rod . watch them cranks if you using a 400 gm block as the mains are bigger and you would have to go small journal small block from large 400 mains that one thick spacer less you go dart bock and or custom crank for the right mains but for hi RPM i would stay small sbc mains . the lighter the better on the new mass. it is hard putting steel back on the crank if it was never made to take the new bob weight if way to much. jerry been there as i have as well on some new cranks... some crank maker did a dumb thing