I will be putting back in my rebuilt 454 engines into boat in 2 weeks. Looking for some dos and donts when reinstalling. Any info on break in of these engines. Can Break in be done on land 55 gal drum feeding water RPMS up, down? Any info would help out [email protected]

hi. very interested in this. Please show rebuild pics.

You need a load on the motor that running in a drum can't do. Also need to run under load at different rpm, the different rpm moves the load up & down the cyl walls, you can't duplicate that on the hose or drum.

Flat tappet or roller cam??????

Get they dyno'd and have them do a little break in, but do most of it with motors in the boat.

That drum of water will be boiling in no time, especially if breaking in a flat tappet cam.

i had mine all broke in and tuned on the dyno, was like $300-400. was well worth it to know all works right, carb is dialed in, AND that i didnt have any leaks or any other problems anywhere.

To me having to pull the motor back out for some stupid leak or stupid issue is worth all of $300-400 i paid for the dyno time. basically drop it in the boat and you can go hammer down since its all set!