Bobby Goolsby
Well-Known Member
I am wondering if a forged steel crank from a 440 will work for my 400 stroker build? I can get it for $350 is why I ask. It is an Eagle 4340 - 44037506760-6. Or should I just buy a stroker kit from 440source?
I think boring the mains out 0.125" today is a bad choice. There are cranks available that will drop in, or you can spend about the same amount of money turning the crank mains & throws down on a 440 crank. By cutting that much out of a block, you are moving the main bore 0.0625" closer to the main cap bolt hole, and need to maintain a 5.152" cam/crank centerline in the process. Again, in todays world of available products, getting a drop-in stroker crank would be better, and possibly less expensive in the long run.Another option on putting the 440 crank in the 400 block is if the main journals on the crank are in great shape is to aline bore the 400 block to 440 bearing size. You have alot more options on what bearings you want to use with the 440 main size or at least is used to be that way.
If it's in good shape and not cracked buy it. The price is pretty good.I am wondering if a forged steel crank from a 440 will work for my 400 stroker build? I can get it for $350 is why I ask. It is an Eagle 4340 - 44037506760-6. Or should I just buy a stroker kit from 440source?