Join Date: Jun 2001
Location: 35.753983 N, 91.634603 W
Re: D3VE-A2A vs E7TE 460 Heads
Just as Dan said the D3VE's are closed chamber heads. The D2's are open chamber and yes those are prone to detonation (the D2's only). D3's are really close-port wise-to the D0VE's but obviously the D3's have bolt-down rockers and bigger chambers.
The E7's have TINY ports and-well-the only intake that fits them is the EFI intake (fuelie's). Just spotted one in the junkyard today and thought to myself, man how do they breathe? SO-if you plan to use the stock intake off of the later model engine, it won't work on an older engine's heads with the big ports.
From a performance (or even a STOCK) setup, the fuelie heads SUCK. The earlier heads are a ton better than the fuelies. The fuelies are good for torque but anything over 3500 RPM, they're DONE. That's right about where the D3's are really doing well. The downsides to the D3's-bolt down rockers (not a problem if you're using a stock style camshaft-just check the lifter preload), from a performance standpoint, unported they're "so-so" as far as 460 heads go, BUT they're a TON better than E7's!
GET OUT & VOTE THIS NOVEMBER!!