Best way to proceed with improving up 427 Windsor street setup

[blykins]

Well, a few things we still need to point out....

1. 485 hp is a far cry from 525-550. I agree, that's a reasonable estimation for a 60's period FE. I built a 427 FIA road race motor, using C3 LR heads, and a 2x4 LR intake. Both had been heavily ported. Compression ratio was 11.5:1, cam was a large solid flat tappet. It made 510 hp.

Even 510 hp is a-ways off from 525-550.

2. We don't know what your engine made, or how it even relates to what Eric had told you about the dyno sessions. There is/was a miscommunication somewhere if you think your engine is making 575-600 hp.

I'm not calling you a liar. I'm not calling Eric a liar. I'm just saying that a factory 427FE will not make 525-550 hp (which is what the Roush 427R is rated for, and what we commonly see from typical 427 ci Windsor builds), much less make 30-50 hp MORE than that.

So, if you're going to make that claim, I would want to see more information and proof. Until then, we can all hold hands, sing "Kumbaya", and talk about what Ford did in the 60's...