[bigblockcoupe]

a 306 is a 302 bored .030 thats all if you want some real power while n/a build a stroker motor 331 or 347 still utilizes a 302 block and makes alot more power. a 351 only weighs about 150# more than a 302 but you can make a heckuva lot more power with it reliably and if you use aluminum heads and get rid of some extra weight in the front end, accessories etc.. and move the battery to the rear your frontend will be lighter than if you had a stock 302 under hood. I dropped over 300# off my '93 cobra by removing the a/c, p/s, adding aluminum heads, sway bar removal etc.. now it weighs just over 3000# after the heads it weighed in at 3320# so you can see how much all the other crap weighs.