wht91z28

I know everyone is going to say don't waste your time. I don't want to hear it. I hear it all the time. My question is if I do a 335 stroker kit to my 91 tpi 305 does it require to bore the engine at all. I have no idea about stroking a motor. Any info would be helpful. Thanks in advance.

gurkgurkgurk

youll probably wanna have the cylinders honed to get any imperfections out, but i believe with just the new crankshaft youll get 335, i think its if your bore each cylinder out .30 over then it would be a 337 but dont quote me on it.

Apeiron

If you don't bore it, it's 329 cid. If you bore it .030 over it's 335 cid. Either way, most people would call it a 335.

five7kid

iTrader: (14)

I've never seen a stock-bore 305 stroker kit, but that doesn't mean they don't exist.

3.736" bore x 3.75" stroke = 328.9 cubic inches (rounded). 3.766" bore x 3.75" stroke = 334.2 cubic inches (rounded).

I don't call it a 335, I call it a 334.

There are other things I call it. But, you don't want to listen to reason, and we can't save you from yourself, even if we tried. So, do what you want to do.

10secondhopeful

You don't have to bore it over, but it's highly recommended. it'd be cheaper just to drop a 350 tpi in it, and u'd have better performance gains. but since thats not what you want to hear. do what you want

five7kid

iTrader: (14)

You do have to bore it if the only stroker pistons available are for a .030" over bore.

Unless you use 305 pistons and SBC 400 rods.

Apeiron

KB186's are standard bore... only $95 each.

Sonix

iTrader: (1)

$95 each eh? Boy that's value added for a 305 block... *cough*....

But seriously, it's not a matter of if an over bore is wanted/desired etc, it's a matter of how badly the bores are worn. Do you NEED to overbore it for new rings to seat? Chances are, yes. How much? Probably .030" to buy the common pistons. .010/.020" overbore pistons (and all other sizes) aren't as common, so you can't get them in all sizes, etc.


So if that's the case, why are you so dead set on doing it, and not listening to *constructive* criticism? From guys who have probably been there, done that? That's what these boards are for. If you knew it all, you'd already have the engine built, and would be off winning (or losing) races. But you don't know it all, that's why you're here asking questions. Why only ask the questions that have the answers you want to hear? Why not ask the questions that have the good, useful answers?

Apeiron

Thomas Tusser is the best authority on the subject.

10secondhopeful

just saying its possible, not probable

Sonix

iTrader: (1)

Boy, I need to use wikipedia to understand some of your posts but... the meaning gets across

five7kid

iTrader: (14)