Me and my daddy had a discussion about the rebuild. He is adamant about dropping the 400 SBC idea completely
I see his point in the matter. It will be cheaper in the short and long run to build up my 350. So a 355 Chevy Prius engine it will be!
I am wondering about which heads to use on this motor. I have narrowed it down between the 193 TBI heads and the 305 Vortec heads. The 193's beat the Vortrecs out in 2500 rpm & below torque production. The Vortecs have a better and smaller combustion chamber, and flow better. Both are cast iron. I have the 193's, but I can get the Vortecs @ $150-250. And sell the 193's as john boat achors lol
What say you???
I have read here -->
http://ecomodder.com/forum/showthrea...4-a-22944.html & it appears that my cruising rpm might be on the low side. I will turn from 1350-1550 in usual 45-55 mph fashion. Will this be too low of a rpm for the motor to function correctly? If so, then should I regear or switch out transmisions with a TH350c?
I do know that I will be utilizing lean burn on the K5. There appears to be a deactivated setting within the computers that will allow the A/F ratio to go to 17.5:1 during light cruise. I will have to speak with a tuner and 1983ChevyVanG20 over on the Chevy forums to find out more about this.
I will be adding EGR back... yes, I believed the lie that EGR cost you power and mpg back in high school. I have since wised up and learned the truth. In fact, I would like to increase my EGR flow if possible! How could this be accomplished? A 454 EGR valve in place of the 350 one? Any pointers?
I feel certain that 20 mpg will be regularly attainable when it is all said and done.