400 to 512 Build

I'm gonna do plenty of test&tunein' and feel the valiant out before I race it... That straight axle might put me into the wall the first pass... Safety for me and the guy in the other lane is my number one concern....

Smart man! thinking ahead will keep you on track. Don't ever be afraid to let off...

You say occasional street driving. What are your octane requirements gonna be.? Have you thought about ethanol since compression is up there and the airs so thin.

DD, actually I can get away with more compression here in the thin air, but after talking to Dave, I'm going to drop it down to 10.63 for pump premium. I think I can get away with the original plan of 12:75 since I have the RC running on PP with iron heads and no real quench with super mild cam and 10.2:1, but he disagrees.....

He says that that the much larger bore will cause detonation problems due to time/flame front travel. I have to take his word on this as I have no previuos experience with BB Mopars.

Keep in mind that when I say "Streetable", this is for me, not bringing kids to school or driving to 7-11. Weekend, late night blasts is all during the summer plus getting in the money brackets. It's just a toy....