The crank hp rating is not an issue in a stock block. There are a lot of threads on this subjects.
i think the OP is thinking about this crank for another block, he's been posting threads looking for 4.1 or stage 2 blocks............
Instead of goofing around here, call an experienced vendor and tell them your goals. Have them build an engine to meet them. There are 109 blocks running 9s all day and 109 blocks failing running 12s. All depends on combo and tune. A few have figured it out. Pay them for their knowledge. Either way don't expect a high hp engine to last without meticulous attention to the tune and supporting actors. I've watched rears blow, trans fail, fuel pumps fade, and a host of non engine items ruin the day. Oh bring you wallet too. Wouldn't expect the build to be anything short of 20k to make low 9 second power.
I’m stuffing one of the 3.625 4340 cranks into a TA block.
My old 109 has been running for about 10 yrs at a 132-134mph power level using one of the early 3.400 CAT cranks.
Can’t complain I guess
What 4340 crankshaft are you using in the 3.625 stroke? Arent all the eagles 4140? Im running 133 now with a stock crank.
Is the crank a 4140?Years ago I cracked a 109 block up one of the webs. That motor had a eagle crank. I took the rotating assemble out and put it in another 109. Still running to this day.
You don't hear a lot about Eagle cranks failing.
Do you have a 4140 in your personal stock block 4.1 stroker or your stage 2 4.1 stroker?You are correct Jerryl, the production block will give up long before the Eagle 4140 crank!
Considering it was a much earlier model, it could have been 4340. I can't say with 100% certainty. Still I haven't heard anything bad about the 4140s. More recently I built a couple engines with 4140's and so far so good. They are in the 700-800hp range.
You gonna bracket race or?
Rick