We have decided to take this year gather our parts to switch from the D naturally aspirated motor to a roots blower motor. I know there is a lot of data saying centrifugal or turbo forced induction is better...I just like a roots on a classic class car. So I am not asking which is better. What I would like to know is any unforeseen lessons I can learn here versus the hard way.
302 cu in, 4 bolt Motown block, steel crank, , H beam Scat rods, AFR 210 runners, 65cc chamber heads, 1 3/4" Dynotech headers. This combo maid 492 on 110 with 17.1 on the vacuum pump. Pistons/cam will need to be change currently running 11:1. We start with carburetors because we have them and switch to mechanical injection the following year.
Dyers has recommended a 6-71 plain rotors no Teflon, we will have to port the intake to match the 1206 gasket. About 5%-10% overdive for 15 psi.
some questions:
1. O-ring heads?
2. Best head gaskets?
3. What impact on running temp will the blower have?
Please share any knowledge, ideas or experiences.
Thanks
Bill