Zek

I was wondering what kind of effects would take place when going to a bigger head on a forced induction vehicle when typically that head is used on larger displacment engines. If we are using a standard LS1 engine, is the 225 head to much or is it fine because of the blower/turbo? I know that if it was naturally aspirated the 225 would generally be to big for a normal street setup.

What are your thoughts for a street driven vehicle? Would you go bigger or stay with the smaller heads? What are the advantages of each on a street car? This site is great & thanks in advance for any clarification.

Zek

Some of you guys have to know about this or have experience here. I'm still new at the turbo thing and I'm pre planning.

Thanks again.

777

iTrader: (21)

I would still use the 205cc. You will have a better low-end.

Tiago

iTrader: (27)

its got the small combustion chambers, which will drive the CR up. I am installing 225s as we speak

on a proper FI car, the "NA" portion of the power band is too short to matter

Josh@KY-Turbo

iTrader: (120)

While the Dart 205cc in my case would produce more low end tourqe B4 the boost comes on, they would also limit me later on when I pull the training wheels 346 motor out to drop the big motor in. I had rather get the Dart 225cc heads and use them out of the box with thier 62cc chamber and my -16cc dished pitons on my 346. They will make better power up top, and allow me to use the same heads on the big motor. Of course I will will be sending them out for port work and to have the chambers opened up for the big motor.