[madmaxx]

Blykins I always value your opinion. I always go to the extreme when trying to understand something. I would think a 500 hp 351 stroked to 427 would outperform a big block (427,460,482) putting out 500hp due to less rotational mass assuming same driver, same car.

References to big or small blocks turning 7,8,9,10K rpms is not applicable to 99% of cobra owners or the old farts on this forumn. I would guess most do not go north of 5K rpm by the silly analogies I hear about kidney killing acceleration. True these cars are fast compared to a honday, lexus but nothing as compared to a "race car".

As far as longevity of a properly stroked small block I would think 100K miles is reasonable if the right components are used. Roller rockers, heavy duty pushrods, balanced rotating assembly etc.