New 427 build
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Cubes is cubes and it has the same displacement as a 427ci big block. Would you put 210cc heads on a 427ci big block. If your spending big bucks do it right. Why limit your RPM ? Build a engine that will spin to 7000RPM + and just rev it up to 6 grand if that's what you want to do.
Thread Starter
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
His goal is a torque motor for the street that will never see 6000 and very rarely 5500 (peak horsepower). Durability, low and midrange power and functional FI are the goals. Why build and cam for 7000 RPM? Practically anything you add for upper RPM power and potential equally subtracts from bottom end performance. See post 6 and 9. The competition ported AFR 210 matches his intake manifold ports exactly and flow 318/335 @ .600 lift with better port velocity and standard valve spacing. Your AFR 227 eliminators not competition ported flow less, 312/229 @ .600 lift with lower port velocity. The heads are leaving nothing on the table and are a better match for his build specs, goals, operating range, intake port size, standard rocker configuration and bottom end power. Bigger is not always better.
Last edited by 63mako; Aug 16, 2014 at 04:13 PM.
