Join Date: Oct 2005
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Re: 305 or 350?
Well, a 350 long block will bolt in place of a 305. All 305 blocks, heads, carbs/tbi, exhaust manifolds exc are basically junk when it comes to making HP.
Cost depends on how new you want stuff, and how much power. I've put together small blocks making 375 HP at the crank for $3500. That is 030 over, top shelf guts. At the other end, a used motor from you pull it runs you $300.
To make the 350 really work, the parts needed are basically everything. Your alt, water pump, all that stuff bolts up. Your gonna want a new long block, intake, carb/tbi.
A middle of the road way out is to find a good bottom end. The tbi motor 350 bottom ends are a good start. Slap some summit racing brand 2.02 1.60 heads on that along with a good intake and carb. Put in a new cam, nothing to hot. That should make you good HP at a good price. Later on, a totally new bottom end can go under the new heads.