|03-26-2013 11:08 PM|
|03-26-2013 09:26 PM|
Neither set flows great, just mediocre heads. The 396 heads have smaller chambers (109 cc) this would add compression, but require the large, hard to obtain "N" series plugs and won't last on modern fuel without hard seats.
Big blocks need to breath to make power.
What kind of budget ? What is it going in? Inteded use?
|03-26-2013 08:25 PM|
|03-25-2013 04:49 PM|
|BOBCRMAN@aol.com||What is the intended use and expected horsepower?|
|03-25-2013 03:55 PM|
what heads would be better
Trying to get my project on the road but am confused just gettin in to this..so ive got a 454 cast#(10069286 or 10068286) i cant make out the 5th number the heads it has are cast#14081045 and they have a plaque stating they are remanufactured by GM but i also have some heads off a 396 cast #3909802 I was hoping i culd get some advise on wich ones i shuld use