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Original Message
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| I dunno - the late heads are very efficient. |
| By Dave Shoe - 09/19/2002 4:53:25 PM; IP 12.104.160.195 |
C6AE-R is the way to go when you plan more than 450 horsepower from an FE, and also when you've got a lot of cubes to get the runners working.
The emissions-era "velocity" head which first showed up in 1966 offers fantastic performance in smaller cubed FEs, and FEs up to about 400 horses. The response time and torque is logically better than the larger runner heads when the RPMs are low to moderate. The 428 PI was a great performer with small-runner velocity heads.
Since a 1966 352 starts out with a rather low compression ratio (9.2:1 if I recall), the later D2TE-AA heads will also bump you a couple of tenths on the compression.
It also comes down to the condition of the heads. If the valves are sunk onto the seats on one casting due to too many valve jobs and too many miles, you may want to make your decision based on the cost of a proper head rebuild.
Both heads will do well for you. Recognize that headers which match to one head will likely not port match to the othe head. The C6AE-R has a high-exit exhast port (with a removable dam cast in which makes it appear centered), and the D2 has a low exit port position.
The intake you select may also drive which head you should choose. Study the port match.
JMO,
Shoe. |
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This thread, so far...
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