This may not be the place for a very objective reply!! A few here might a bit biased 
The 400 can run very strong but they need a bunch of help with compression - they came in around 7.5:1. The EMC engines have featured several 400's.
Bottom line is the 460 heads flow real good with a bit of work and the cubes will help always.
Bill
The 400 can run very strong but they need a bunch of help with compression - they came in around 7.5:1. The EMC engines have featured several 400's.
Bottom line is the 460 heads flow real good with a bit of work and the cubes will help always.
Bill