TraviZ

iTrader: (2)

ok now dont even begin to tell me to swap a 350, i think i changed my mind and just build up my 305 just to be different. but anyways, without emissions as a consideration, i was thinking the vortec intake manifold with some etec 170 or 200 heads and some nice pistons to create a 9.35:1 CR.

but i am curious, if i bored and stroked my engine to 335, i know i just need a 400 crank for stroke, but to bore it, it has to be .030" over. to bore it , must i strip it down to just the block and take it to a machine shop? and how much does it usually cost to get it bored? thanks!

89Warbird

You will have to check with Edelbrock but I think you will have a problem with the valves hittiing the cylinder walls on a 305.

five7kid

iTrader: (14)

"Boring" the cylinders in a block is certainly a machine shop job. Yes, you have to take it all apart to do that.

You don't just put a 400 crank in a 305 block (or 350, for that matter). The main journals on a 400 are larger than 305 or 350, so they have to be turned down (also a machine shop job). Then, the block oil pan rails will get in the way of the rods as they swing around, so they will have to be ground down. After that, you need to worry about the rod bolts hitting the bottom of the cam (if you upgrade the cam, and not doing that doesn't make any sense if you're trying to get more power out of a 305). Then you have to address the issue of a 400 crank being externally balanced.

If you want a 305 to run better, go ahead and do that. But, if you have to do ANYTHING to the block, it doesn't make $'s/HP sense to spend any money on it - dump it and go find a 350 block to build.

The heads mentioned are not good choices for any 305 build. If you build a 305, use 305-specific heads, or possibly shave a set of factory Vortecs (not a smart move in my opinion, but that's my opinion).

Can you make a 305 run better and be "different"? Sure.
Can you spend enough money to make a 305 run better than a 350? Sure.
Can you make a 305 run better than a 350 for the same money? Yes, but.
Can you spend money on a 305 block and spend less money than building a 350 and have the 305 run better? No.
Does being "different" mean anything thing to anybody but you? No.

I maintain that my car runs better now for the money I have spent than it would with the same money spent on a 350. Why? Because what I did would have had to have been done on either the 305 or a 350. But, if I had needed to do anything to the shortblock of the 305, the tables would have turned and I should start looking for a 350 shortblock.

Streetiron85

I have an extra stroker crank and I'd put it in my 305, except for one thing, the crank is a 1pc and the block is a 2pc.
As 5.7 kid sez, don't spend a lot of $$ on it, like machining the block. Cause it begins to cross the line between doing something different to doing something crazy.
Maybe with that said some other stroker 305 owners will be provoked to put in their .03 worth.
It might be a cood combo with a TBI.
It's kinda funny, guys post that they're wanting to build a stroker 305, but I don't see many posts by guys who actually did it.
If you do it, post and let us know how it went.

430T/A

for all your machine work, boring, grinding the crank, clearanceing the block, your talking in the 750-1000 range. parts are going to kick you in the *** too. pistons, bearings, the crank itself your around 1500. then your heads will need a thing or two. bassically you'd be shooting yourself in the foot for a 13 second car. and you should ditch your tbi. tbi is not, or ever was intended for performance applications.