|
Re: does it matter?
4 bolt mains do not give you any better performance, but simply have the capacity to hold up better under high revs and power output of a high performance engine.
Most 4 bolt main blocks, that are available used, were originally placed in trucks (all 3/4 and 1 ton 350 cid trucks were supposed to get 4 bolt blocks) and marine engines, which were expected to occasionally function at or near full throttle for extended periods of time.
Performance cars (Corvette, some Camaros, etc) often, but not always got them, too.
If you really want one, start with a light truck block, they are cheaper than the performance car blocks.
IMO a 2 bolt main block will do just fine, especially if you are not going to rev the heck out of it (5000 + rpm) for extended periods of time.
You can improve a 2 bolt block by using NEW high quality cap bolts (try ARP) specifically designed for the application. Also try using cap girdles as well, to support the caps.
|