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Originally Posted by bigblock73
Something to add the the equation. Lets say you wanted a 500 HP engine, small block, big block...didn't matter...you wanted 500 HP. I big block can make that 500 HP a lot easier and work a lot less harder doing it compared to a small block making the same power. My 468 is mostly stock with ported cast iron heads, decent cam, aftermarket intake and valvetrain and it makes 515. To get a small block to do that, you might be talking aftermarket heads, beefed up bottom end, and who knows what else. Granted the price may equal out when the building is all said and done, but I doubt a heavily modified small block will last as long as a fairly stock big block. Not only that, but how many small blocks do you see in our trucks compared to big blocks?  Different = cool. 
Oh, one more thing...my comparison is on a low tech build...carbs and no computer controlled devices. The new engines of today blow my mind and are ultimately the way to go for durability and power IMO. |
Depends on how you look at it. For example, my 383 made well over 500 hp with only around $3k. Now take a big block with the same amount of hp and it will NOT work less doing so. Because, to pull around the extra weight it is actually working harder to move said weight. A big block actually works more because of the large rotating mass it is trying to spend. I will always run smallblocks because i make more power for less money then with a big block.
That engine was assembled with no problems for 5 years. 3 of those years i was putting a 175 hp worth of nitrous to it putting up into high 600hp range and when i pulled it apart, the engine still looked new on the inside.