Originally Posted By Malicious�
Originally Posted By knyech1
Originally Posted By Malicious�
I was always told that boost motors need swept volume (stroke) for most power. Hellcat was set-up for overbuilt-durability, you'll see guys putting stroker cranks in them soon enough though. I'd be investigating the 400" boosted BES 3rd gens over the stock stuff twocents


That applies for both NA and boosted because you are getting more displacement. The problem, as stated previously by another user, is the fact that you run into higher rod angles with the lower rod ratio you create. That, along with the higher cylinder pressures, can cause large side loading on the pistons and cylinder walls. For 5.7 and 6.1 blocks (which are already notorious for cracking because of thin cylinder walls) this should be taken seriously. On top of that, you reduce dell time and increase piston speed with a stroker...


NA is different - its not ever going to get the same volumetric efficiency as a forced air engine. Engine is just an air pump - more in, more out = more power.


So how is NA different?? Larger swept volume = more cubes = more air space = more power so I'm not sure what you mean when you say they are different. Boosted engine obviously have a better volumetric efficiency but that wasn't the topic of conversation.

knyech1- '71 Sassy Grass Demon 340/904. Pump gas, 1.61 60ft, 7.439 1/8 @ 95mph, 11.824 1/4 @ 111mph "Not too bad for a pump gas 340, full of used parts and hillbilly ported stock heads." - V.B. '03 2500 5.9L HO 6-spd on 35's. 395hp/755ft-lb at tires.