Help Gathering Info on Inherited Motor

Hi everyone,

My father passed away last month and he left a few projects laying around. I posted under the welcome aboard area describing some of what I'm going through and hoping to find with some help from this great community.

Here is a link to that post: Mopar Inheritance

My Father had a built 440, but the shop that built it didn't keep any records and could only tell me it won't run on pump gas and will need pistons changed to do so. I found a manilla folder with the following receipts inside of it. I'm not trying to drive at 5000 RPM going 50 mph.

Can someone elaborate on the following technical information and help me determine the best way forward (or backward) with keeping this build alive? I'm no expert, but know a little about cars. Of course my father's death was unexpected, so I am not financially prepared to spend a ton of money to get this dialed in. Any and all advice is appreciated. I know a bit, but have no idea how to tell if the engine has been stroked, bored over, what it's current displacement is if it has been. I'd hope to make this a streetable car. Everything is in storage right now and the motor has never been run.

I'm not sure if I'm in the right / best place for this either and don't know how to "cross-post" so it's seen in multiple threads, so I'll also post this in Big Block Tech and Mopar Performance Issues.

Thanks!


Connecting Rods

Scat Enterprises​

Pro Sport H-Beam, ARP Bolts (7/16”); Rod Length 6.760; Rod Journal 2.374; Wrist Pin 1.094; Big End Width 1.012​

Main Bearing Set

Mahle​

Part #: MS-1039H-10; High performance bearing (partial groove)​

Fel-Pro Valley Pan Gasket

Port Style: Rectangular; Port Height: 2.270; Port Width: 1.230; Blocked heat crossover; 4 facing pieces; .030 thick.​

Clevite Camshaft Bearings

Part #: SH-876S; Stock Cam Bearing oversize; Not grooved​

Ross Racing Pistons

Bore: 4.350; Bore (mm): 110.490; Stroke: 3.750; Engine Stroke Type: Stroked; Rod Length: 6.768; Domed with two valve reliefs; Forged aluminum; Compression height: 2.065; Piston head volume: -14.00cc; Wrist pin style: press-fit or floating; Pin diameter: .990​

Ross Piston Thickness Data​

3.570 – A dimension (for Ross eng. Dept only); 99501 – Ross Job Card / Part Number; GH – Program run by; .200 Deck thickness major front; .297 deck thickness major rear; .185 minimmum thickness under intake valve pocket; .182 minimum thickness under exhaust valve pocket; .272 minimum thickness at top of flat top / dome / dish; .297 minimum thickness of dome at edge on plug side; .185 intake vlave pocket to top ring groove; .169 exhaust valve pocket to top ring groove; .102 side relief; .125 pin hole to side of pin boss; .785 pin engagement in pin bosses (each side)​

Ross Piston Rings

Bore: 4.350; Bore (mm): 110.490; File fit, top ring 1/16 in thick iron; Second ring 1/16in; Oil ring 3/16in​

Mopar Performance Camshaft and Lifters

Part #: P4120663; Adv duration 312/312: Duration @ .050 271/271; In cen 104; Lift .590/.590; O Lap 104; Type – mechanical; Bolt pattern 3​