Would like to build a Stroker 289, what crank

Most economical and readily available would be a 331 kit.

All we do are FORDS.

 

Go with a junk yard 302 out of an 1996 & up explorer or mercury mountaineer.They are roller cam like the mustangs,they come with the gt40 heads that are very good,around a 25-30hp more than the other stock heads.Drop in a stroker crank & a good set of pistons & make some good reliable & cheap HP,you can mail order 700hp just in bolt on's,Just ask them mustang guys 100,000 of them can't be wrong.

 

But that wouldn't really be a stroker just a 302

If you want to build a "High Rev'n 289" then you don't really want to stroke it. Short stroke motors are better for high RPM

260 crank will not "de-stroke" it - they are the same crank. 351W crank will not fit the 289/302 block.

Show Car BS, you can't take a 289/302 past about 353", although a 363 (4.150 bore 3.40 stroke) has been attempted with limited success, although more d0-able with an aftermarket block.

Had never heard of that one, but it would make a 331 with a stock 4" bore or 336" with .030 over bore

I don't think you can get more than 408" out of a 283-350 block and 434 out of a 400 block. With an aftermarket block you can go to at least 480", but not with a stock block.

Not sure what he is building, but some guys need to stay with 302 based due to physical size limitations - 351W take you more space.
And you always "NEED" more power

347's are readily available (I have a couple of them) and cost about the same as 331/332 kits

 

I'd recommend getting prices on machine work before getting too far into parts. Also if you think that you have a good block, get it sonic tested before deciding bore size.
Thirty over is usually good for 289/302, but even on the best block this will only leave you a 0.090" wall at thinnest spot. There are variations such as a Mexican casting.

 

Yup sleeved.... my 1963 m/t catolog has a 4" stroker crank for chevy, so even unsleeved you can get 402 cubes on a 4" bore

I had a 1962 magazine that built a 460 cube sbc, but they had to knotch the sleeves to fit each other in.... doesnt sound good to me, but it can be done

 

Talk to Roy Poole (65comet here on the HAMB) He had a bad to the bone 289 based 358 in his Comet before he switched to a 408W.

 

It all comes down to money, HP and what fits the best (in your car). If you are going for a 289/302 style motor, then the best and most economical setup for 325 - 400 HP is a later 302 roller block, a 3.25 stroker crank, a good set of rods, careful head selection -- nets you about 331 cubes.

Unless you're spending big bucks and going to a 4-bolt main block and all that jazz, then you can build a 400 HP motor as inexpensively as just about any combination. You start pushing these blocks over 400 HP and racing them hard - you'll probably have issues. The blocks are thin/light, webbing is minimal, main cap width is minimal, etc.. Some early 2-bolt 302 blocks (like the infamous 'Mexican' 302) are a bit better - in that the caps are wider . . . like the rare HIPO 289. But - these are non-roller blocks, don't have the nice one-piece rear seal, etc..

Late 302 roller blocks are super cheap, you can run a variety of heads -- even GT40P heads with some port work can make 400HP, you have nice roller cam setups, etc..

Note: Once you go over a 3.25 stroke, things get more complicated - piston pins and ring packages get to be a bit of a mess, you tend to get more piston rock, etc..

How much money are you looking on spending -- carb to pan?

 

Thanks, I'll look him up.

 

BigO ,
Something to chew on in all this which stroker stuff is that regardless of bore to stroke ratio is that how fast it revs and how long it lasts is just as affected by the weight of the parts used. A properly balanced stroker with good lightweight billet parts will pick up rpm just as quickly as any big bore short stroke you can come up with. Just remember most of this is preference of a split hair in regards to a healthy street engine. A rough power goal or budget would give you more useful advice across the board.

I personally like the early six bolt motors but there is no end of the world difference in power capability or huge hidden horsepower either way. If you build one early and one late style 302 with any given set of modifications the result if not identical is very similar. Build enough of them and sometimes you find a little more with the most basic combination most wouldn't even think of using. If you can find a Mexican 302 or hipo 289 great if not just buy a set of caps and/or a decent main girdle.

There is only one reason not to stroke a 289 if you want one and that is your engine builder isn't up to the task. Anyone can throw a "kit" in an engine, bolt on CNC heads and claim to be a "builder" these days. Then when it doesn't work out some how it's the fault of the parts.

For the record the Y Block crank was cut down as the first stroker crank for SBF by 1963... Combined with sleeves and lots of grinding on filled / brazed blocks many odd big ci 289 grenades were built. It's a huge waste of time today but I'd like to do one for a full on nostalgia trip just to see how long I could make it last.