Horsepower Estimate?

Here's a stock high cr 340 with various upgrades, so say if you took 20 hp or so off each peak for lower cr and 1.88 valve.

If you look at that 360 video in post #6 it final stage of mods is similar to phase 6 of this 340 making around 385 hp but stock cr.


Phase 1:Stock 340 baseline, Chrysler electronic ignitionPhase 2:Replace small production AVS with Edelbrock 800 CFM carbPhase 3:Replace factory HP manifolds with Hooker 151/48-inch headersPhase 4:Replace factory iron 340 HP intake with Edelbrock Performer RPM Air GapPhase 5:Replace SSI springs and retainers with Engle #604LS retainers and #993 springsPhase 6:Replace stock 340 HP cam with Comp Xtreme Energy 268

Dyno Results
Westech Performance Group
Superflow Dyno
Horsepower
RPMPhase 1Phase 2Phase 3Phase 4Phase 5Phase 6
3000185.2195.5199.6206.4206.2214.7
3200195.4206.1213.9220.7220.8229.3
3400208.9224.6233.0240.6240.5251.5
3600224.8238.7252.7260.8259.9275.7
3800236.4253.7266.6277.0276.9298.1
4000249.5267.6280.0291.8291.8311.7
4200259.3278.9292.9306.0306.2327.1
4400265.0287.1304.3321.3321.3344.6
4600268.8297.2313.3335.2334.7355.9
4800274.7306.8321.1343.1342.5366.7
5000278.5312.7329.1352.6350.4377.0
5100280.2316.9330.6354.5352.4381.3
5200281.3316.9330.8353.6353.6384.3
5400273.7314.9329.3350.8355.4386.1
5500273.5313.9330.4350.7355.9387.4
5600269.3314.5330.2350.9353.5389.4
5700312.7329.3348.6353.3391.6
5800308.8326.2347.6351.4387.2
6000329.2353.4383.7
6200314.8373.7

https://www.motortrend.com/articles/mopp-0102-1970-340-high-performance-mill-dyno/