Precision engine 351 to 427 build up

[madmaxx]

The attached link details the build of a 351w based Dart block to 427. This is a direct comparison IMHO to the Roush 427 or Keith Craft 427. They finally dynoed it. There are 6 parts beginning with the intial block maching and demonstrates the attention to detail for sucessfull build.

As you will read in the dyno, they did not pick the optimium cam or carb for intial dyno. WOW, professional engine builders struggling with a cam selection, I dont stand a chance. They originally thought 600 hp and ended up with 515hp. I dont think they would realize the gaiin going from the first lunatti cam going to the second. Mine cam falls inbetween the two and my dyno numbers compared to his are 2ft-lbs away and 1 hp. I think they would have to get the custom grind.

According to his springs he is running 360lb open, to go with the larger cam I am sure this would have to increase spring pressure and bang we are back into stressing the valve train and affecting long term reliability.

I do like the distributor not requiring an MSD box, why dont we all use this? Any downside? I have no idea why he went with a bronze gear, they make the everwear for the distributor. Maybe he does not know as much as I thought he did LOL!!


http://www.precisionenginetech.com/p...-the-dyno-run/