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Theres only "play" or clearance one way..... it is determined by the upper cam sprocket when bolted in place.

Could be a bad one. Ports look ok?? Pix may help.

2468130 means 383 casting..... L.L. is there too. Its an early 383. The machine stamp pad could be ruined on any low deck block if any machining has been done.

Really doubt the harsh engagement is causing wear.....more like preventing wear.

Teeth are on the torque converter. Some of the B&M sfi flex plates are drilled for all possibilities.

All 440 blocks are desireable. They havent made them for regular production since 1978. Maybe not a gold mine, but still desireable................

Doubtful any race car engine gets close to 400 miles (equivalent) before hitting the racetrack. I'd cry like a baby if my car came home with an engine lookin like that. BTW, agree 100 percent with the OP, the stock rockers are the first thing I toss in the trash.

I doubt it. See the post about head gasket slits at the bottom of this page.

No need.....just stack up the main bearing shells on the block side and leave the caps bare. :poke:

I say yes, unless its been out in the rain or underground for years. Maybe just need bearings even.

I beat german sports cars at the drag strip with my rusty Dodge Dart.... just decide which type of racing you really want to do and go from there.

I found Dennis` response to be enlightening.

742 is correct. DrDiff is a good resource for Mopar rears.

The box looked pretty good. :poke:

1.812" Compression distance in a 400 piston, 1.912" for the 72 and later 440. The early style and any racing pistons are going to be even taller. Maybe you'd need the .060" head gasket that is a spacer style to make that work...cuz thats a mile otherwise??? I'm grabbing the bucket of popcorn...

.020 overbore in a 400 is not a standard 440 piston. The 400 is THE big bore engine.

Yes indeed.

This is the one you want Aug, if you want to be able to do them yourself.... You can then add mandrels to your collection as other type of motor jobs come in. https://carshopinc.com/mopar-big-block-383-426-440-v8-cam-bearing-installation-tool-removing-bearings.html

Picture your rebuilt motor is still under warrantee, and you need warrantee service from the rebuilder..... Those are placed there to alert the rebuiilder if you had overheated the motor. So yes, reman for sure. If by chance you have the motor torn down or do in the future.... look at the...

It does'nt have to be expensive................. it could be done with graduated cylinder. The trick would be to jack the car up to the point where the piston is close to level. Just set it to TDC, and dump WD-40 or similar out of a graduated cylinder till the chamber is full...measure the...