Race it, Don't rice it!
My 86 1 ton truck spun the no. eight rod bearing in a 454. While deciding whether to replace or rebuild, I found a 73 1 ton from the local classifieds and bought it for $900. Drove it home 75 miles, pulled it into the shop and promptly pulled the motor. The next day I pulled the 86 454 and while tearing it down I found nothing unusual other than the pick up screen was full of old silicone. No doubt the reason for the low oil pressure and spun rod bearing. The third day I pulled the 73 engine out and discovered a 396 not a 454 as the owner swore it was a original 454. Since the 454 has a spun bearing and a future life as a mud bogger I'm thinking of making the 396 homey in the 86 1 ton. Later tonight I discover the 454 has a two piece seal and 3993820 large chambered heads that have been remaned not so many miles ago. I'm guessing 25,000 or so. I also know the the 454 is external balanced and the block (14015445) was original to the 86 1 ton. Now what to do with the 396, that has a domed piston and 3917215 closed chambered, oval port heads with 101 cc chambers and three burnt and cracked valves? I am thinking of using the 454 heads an the 396 and having a compression ratio of near 11:1 I believe. I might be experimenting a little on this one to try and make it work. I'll have to use the 396 clutch and flywheel. Does any one know if the 454 heads will fit the 396 block and will the domed pistons clear the valves with a Comp cam 268H and .500 lift?