Stroker????

[Anonymous]

Does anyone know if there are any post on doing a stroker for a 200 maybe with a 250 crank or something like that? Could this be done and would there be any advantages to it? I know stroked V8's make a lot more torque. Would a stroked 200 have the same effect. I'm just curius cause I know once I get my stang back on the road even with all my mods. I will want more power. I don't want the juice but a supercharger or a turbo are major posibilities. It would be nice to stay N/A for bragging rights so I'm very interested in the possibilities. My biggest limit right now is my 67' cyl. head, very poor flow as we all know. I mean I should have a strong motor as it stands now. My estimation when I began my rebuild was right around 145-155 rwhp, maybe a little more at a stretch, I'm very itchy to finish my car and get it dyno'd. So does anyone know if it would maybe possible to use say a 250 crank in a 200 with 200 rods and a custom set of pistons. Would there be any advantages to this?? Like maybe some more hp or torque? What would the downsides be though or would there be any??

 

[MLINE]

It would be cool to be able to do that but,
My understanding is you can not stroke the 200 block since the thow of the stock crank puts the rods so close to the camshaft. The cam has notches in it for clearance already.

The 250 block is a little taller to accomodate the longer stroke.

The plus side is the 200 can rev higher with the shorter stroke. :roll:

 

[Inline6Merc]

Here is an article on a stroked 144 cubic inch motor from the 60's!!!

http://www.geocities.com/hotrod_inline6 ... alcon.html

http://www.geocities.com/hotrod_inline6 ... lcon6.html

http://www.geocities.com/hotrod_inline6 ... part2.html


Later,

Curtis

 

[godheadcustoms]

The 250 is basically a factory stroked 200 engine. Unfortunately, the 200 already has a pretty weak rod ratio, 1.52:1, so stroking this motor is out of the question. Not enough room for a longer crank, plus the rod ratio would get unacceptable. When Ford made the 250 they stretched the 200 block about 2" and still ran the same piddly rod ratio, just in a taller block.
MLINE is right, the 200 will rev a little higher, the 250 will have more torque... the cool thing,if you could pull it off with Argie parts economically, would be to destroke a 250 motor. Longer rods, shorter stroke= more RPM's and power, smoother engine.

 

[addo]

The 221 and 188 motors are pick of the crop for NA. Both use the same block. The 188 has a 170 crank with the best rod ratio of te lot, while the 221 is about 9 pounds heavier than a 200, marginally taller and wider (much smaller than a 250) and has 10% extra capacity. For turbos, and some NA work, a long rod 250 is worth building.

Cheers, Adam.