This got off into the weeds pretty quickly. If you are really going to run a stock converter, stock ex. manifolds 3.23:1 gears in a 383, forget the single plane manifold. Build as much compression ratio as your budget allows, use a dual plane intake of your choice with a 650-750V.S. carb., and don't over cam it. I have run stock manifolded 383's in 2 different 4 door (66& 68) Newports. Both ran mid 15's at 90ish m.p.h. with less than 8:1 compression,2.76-3.23 gears & stock heads.. I used a cam dynamics 266 energizer(.440" 266 210@.050") and a Crower 260 H.D.P. ( .456"-477" 260-267 212-218@.050). I liked the energizer better as it had tighter lobe sep. and better low end.A 230@ .050 cam and a single plane will be a turd below 3000-3500 R.P.M.
I agree, we ended up far out in the weeds LOL
Yes, I'm really gonna do what I stated from beginning. Maybe not the DP4B since it's not for spreadbore, which I'm gonna use.
I have never even considered a single plane for this build. This engine will need long runners.
I'm going to keep the compression pump gas friendly. We can get 93.5 oct here in Sweden (<5% ethanol). Cylinder pressure around healthy 160-170 psi is what I'm aiming for, that will leave some margin.
What I asked for was camshaft input for this specific build.
My thoughts of a cam are duration around 220 and maybe a little more on exhaust, lift as much as .500 and LS around 110. Talking hydraulic flat tappet now. But what do I know? LOL
It would be interested in some input - what cam and why?
