Originally Posted by nghollis
I have a 468 with a GM forged steel crank,TRW .500 domed pistons and 3/8 rods that have had the beams polished,floated and ARP rod bolts installed.The engine will have a rons toilet running alcohol.What RPM limit will I be at? I know these pistons are VERY heavy.I also know that the alcohol will add more stress.Should I just change to a 7/16 rod or bite the bullit and buy aftermarket rods. The car this engine will be in is a 83 camaro backhalf that weighs 3200#,glide,12 bolt 5.13gears and a 31/14.15 tire.Any help will be GREATLY appreciated! THANKS Nick
If you are talking about a set of 7/16 dimple rods, I will try and find you one of my rods that came apart on a 468 12.5 motor running 7300 rpm and after 10 passes destroyed the crank, block, and cam. I was young and let someone tell me that these rods were the next best thing to sliced bread. :shock:
My current engine is 540 with Eagle rods and L-19 rod bolts that runs 8000-8200 RPM for 12-15 seconds. I have around 30 passes on those and no failures...yet. I have not pulled the engine apart to freshen it up this year, but hopefully I will get to it this month.