Quote:
Originally Posted by NoHaveMSG
If I wanted boost, I would agree with that. Staying NA I don't think the forged bottom end is worth it. It doesn't really gain me anything power wise, and at twice the cost of a stock shortblock, it would need to be twice as reliable to pencil out. I'm willing to deal with a bit of hassle if more power is also an option  Bench wrenching is fun though. Hopefully we see more development on this in the future. |
Totally agree on that - built block isn't worth it for NA.
Original crank is forged anyway, and the weak point (if any) is the rods (leaving aside the known oiling issues). Cast pistons are more thermally stable than forged as well and allow for tighter clearances in the bore. Aftermarket pistons tend to be forged to be more detonation-resistant, which is great for FI applications but much less important in an NA application presuming the tune is reasonable.