Well, Jim, you are set to go then. It just boils down to what kind of engine you want to suffer with. Like I said, the 068 was pretty obnoxious in a 400. A 350 would be worse. For my manual transmissions I prefer a high lift/short duration cam like my Crane HMV260. In my low compression 350 it felt fairly lumpy, but the idle vacuum was fine. It pulled very hard in my '68 Firebird, but was out of breath at 4500 rpm.Mark, the car already has 3.23 gears and a 4 speed.
In 2016 I did a 400 engine with a custom ground solid flat tappet cam Edelbrock heads single plane intake 830 Holley stock crankshaft scat rod diamond pistons 10.65 compression if I had to do it all over I would’ve put more duration to it Engine produced 588 hp Pontiac motors are my favorite it’s where I cut my teeth but I can’t afford them
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