Heading to R&R performance at the end of this week.

Here is the combo:
-'77 440 block .030 overbore, square decked with ARP studded mains.
-Factory forged crank, King XP bearings, Scat H beams rods, forged Mahle powerpak pistons with 1.5,1.5,3 mm ring pack at -.005 deck for .047 quench with Felpro gaskets.
-Compression ratio comes out to 10.31:1.
-ATI two ring damper for stock location pulleys.
-Milodon 7 quart kick out low profile pan and windage tray, 1/2" pickup, melling HV pump. Driven 15-50 break in oil.

-Dwayne Porter spec'd nitrided custom comp solid flat tappet cam with 292/301 advertised, 260/266@.050, 586/585, 108 lsa. Degree'd in at 104 center line with Rollmaster timing set.
-Howard's EDM lifters
-1.65:1 ratio Mancini Harland Sharp rocker arms that will open the valve to .625/.624" after lash. Manton 3/8" diameter, .095 wall, stage 3 pushrods.

The heads are Indy EZ's that have been ported to max wedge and cleaned up and a "mild pocket porting" them and fixed the guide issues and recut the valve seats.
After that they went Wheeler racing engines flow bench and here are the flow numbers:
Lift - Intake flow - Exhaust flow
.100 - 72.3 - 66.5
.200 - 144.3 -126.1
.300 - 209.2 -165.3
.400 - 261.6 -201.4
.500 - 310.2 -235.7
.600 - 347.8 -264.6
.700 - 340.3 -279.3
.800 - 349.9 -281
Not sure how their bench compares to others but that's the data I got.

-The heads are topped with the standard 2.19-1.81 valves and have Comp 928 dual springs, comp tool steel 10 degree retainers. Installed height of 1.95 with 150 lbs of seated spring load. Open spring load of 370@ .620 lift.

-On top of all this is a out of the box Mopar M1 "337" single plane manifold with a Quickfuel 950 4150 carb. I have two spacers to try. One plastic summit 4 hole cheapie 1" and a wood 3/4" open spacer I got free.

-Firecore mechanical tall distributor and plug wires

This is my first dyno and first build that isn't just stock. I'm mainly hoping it lives after break in and spotting leaks and fixing that while out of the car is easy. After that initial worry of possible destruction leaves my brain then power acquisition comes to mind lol hoping for 425+ hemi power.

Curious to see what everyone thinks. Guesses on power, torque and rpm peaks?