Rebuild

[BSB67]

If the 2nd block is completely machined and blueprinted, and the heads are done well with an eye towards performance, than a modern flat tappet cam will give you more power than the stock 383 4bbl with the drivability.

Correct. And that is why 99% don't.

Considering that it will likely be an 7.5 to 8:1 motor, 451Mopar's recommendations are good.

 

[moper]

Fixed: "Considering that it will likely be an 7.5 to 8:1 motor, all the recommendations are good."

The rest of my post read " I'd use the XE262 with most pistons available. If you can guarantee a static ratio of 9.8:1 or better (not easy to do with common pistons) then the XE268."

If you prefer Lunati that's fine, but there's nothing "not good" about what I said...lol.

 

[biomedtechguy]

Let Bob K "Mr 6 pak" know what you want to do, and get either a cam directly from him or the one he recommends. Period-done.
PM sent.

 

[Challenger340]

I think this is exactly how folks have been responding.

If you use "rebuilt heads" and any "replacement piston" that the machine shop puts in, you will fall far short of RR 383 hp performance.

Heads- Stealth
Pistons - 2315 (There is no 383 hp replacement piston available and this is your best bet)
Cam - 220° @ 0.050 and 112° LSA, or any other manufacturers hp replacement cam.
Gasket - 0.020"

This will be a no fuss no muss build that will make a little more power than a RR 383 hp.

The above post is extremely solid advice, and I would second that you seriously investigate the merits !
This combination would be a very capable wee-83 I believe you would be very happy with.

 

[superbeedave]

Check out Keith Black KB 400 pistons, these are a dome piston with -6cc I do believe and a compression height of 1.908. An 383 HP block has a shorter
deck height than a non HP 383 I do believe and I would use the .02 thick shims gaskets. If you do the compression calculator and have a .012 or so deck hgt. to piston
you should fall in the 9.4:1 - 9.6:1 or there about.