OK Here is what I am trying to build:

A Chevy 383 with an aftermarket Scat 383 crank, stock 400 5.565 rods with new bolts, my heads are cleaned up #14102193...Swirl port 64CC 87-up...305/350......1.94"/1.5" valves Chamber is 65CC Crank Is one piece rear seal.

My pistons are KB Piston Style with a D-shaped cup +18CC Piston Material: Hypereutectic aluminum: Block had been prepped for them.

With stock 400 Rods and a 3.75 stroke I am told with a standard .040 Felpro head gasket and the pistons .018 below deck I should have a 9.1 compression ratio.

I plan on running an 86 up TPI with MAF.

Everything is stock, no hot rod performance changes.

My aim is to make the highest torque at as lowest RPMs possible. I know this set up: TPI and Heads will not run over 5000 RPMs. I have never owned a car that was able to run over 5000 RPMs any way.

My plan is to gear my 93 G20 Custom Van for 1500 to 2000 RPMs at cruse speed of 75/85MPH. I plan on doing that by adding a second Over Drive. Current transmission is a 4L60E and the stock 343 rear end. Stock gearing has fine power which should be better with the TPI 383, so one more gear gets me home.

Thanks to this site I have learned a ton of things.

So two major questions remain:

The cam?

At this point I have a Hurbert Cam custom regrind hyd Roller 208/214 440/440 114

Nearly no one make the kind of near factory Hyd. Roller cam that I can find.

I am hoping for someone here whom knows of such a cam, and or tell me of a better cam for my plans.

And I have been told I need to check Rocker Geology, which may require new push rods.

Is that a real problem with a low RPM engine adjustable height Chevy roller rocker??

Thanks.

Rich