Looking for info on 2406782 rods

DusterJoe410.4 said

Looking at between 9:1-10:1 compression and 5500-5800 rpm with probably 300ish hp. I ran the .050 Quench dome KBs in my previous 360 with Pressed pins and stock external balance for the same vehicle and it lived for 12-15k mi and hundreds of passes at the track before I popped a ring land off one of the pistons.

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Roger. Just so you'll know......

Stock 360 bobweight is around 2150 grams. Changing to the KB's in a 360 is not as dramatic a change as on a 340, but you still drop the bobweight to around 2075 or 75 grams below stock. That is well outside the normal factory tolerance, which seems to have been in the +/- 25 to 30 gram range as best as we can know from reports.

Change to these lighter rods and the bobweight drops to around 2025 grams which is approximately 125 grams below stock. That is getting way out of line.

(FWIW.... All the numbers above are weighed and measured numbers, then computed for a standard 50% reciprocating weight factor, not any guessing. I use the word 'around' only because the exact numbers will vary a bit up and down across production tolerances.)