Various 427 Questions, New Member

[Anthony]

My advice, get a new block, either a genesis iron side oiler, or pond/shelby aluminum block. One thing to remember is that if you are going to run solid lifters, an iron block will start easier when cold, as compared with an aluminum block, in which the lash will be very tight when cold, and the engine harder to start. However, an alumunum block is easier to repair if damaged.

Originally Posted by Excaliber

I had a killer 427 side oiler, over 600 horse, with a solid roller stick that didn't 'come on the cam' until 3000 rpm or so. Which was really a drag when I found myself stuck in traffic with a high rear end ratio and had to drop a gear to keep the rpm up and the motor happy! I rebuilt with a milder cam, smaller carbs, gave up about a 150 horse and didn't even miss it! MPG doubled, streetability was vastly improved and the lower compression allows for 'pump gas' and it's STILL dang near as fast as it was before! 11.90 with 600 plus horse and open headers vs 11.99 with 500 horse and running the SIDE PIPES!

that's because your 600 hp engine wasn't really making 600 hp. If it was, you should have been running mid 10's at 130 mph. If you're just as fast with your new engine as your old engine, then they are making about the same average hp.