[TurboLX]

The Basics of Stroked Engines and How to Build One

How to Build a Ford 331 Stroker. 347 Stroker | FordMuscle.com

[TurboLX]

feel free to add and ask questions

[1slo5.0]

My favorite quote: "347 is not an ideal street motor due to rapid wear on the rings (from the relatively low rod ratio) and increased oil burning"

Nothing could be further from the truth.

[jdrahush]

Haha stroking basics.... ----> stroking (I know I'm immature so don't bother pointing that out )

[99Suprise]

How far do you think I could stroke a 351 Cleveland?

[Vinyl66]

could 289 heads on a stroked 347 work or would they just choke the engine down?

[Vinyl66]

never mind didn't read long enough lol

[MellowYellow]

I saw how much the kits cost but how much is it to get it bored at a machine shop?

[The eaglenator]

I am wondering if someone could tell me. How do you fix it when your banks are running lean? My 1st and 3rd banks are running lean. Is that as simple as changing the plugs? I may sound stupid but I don't know what "banks running lean" mean. Thanks for any help anyone can give!

[darkhorse50]

That book that there using as a reference is a really good read, explains everything and anything you would want to know about your motor and in great deatail too

[darkhorse50]

This post got me thinking though, what would be the outcome if you ran a 289 crank with a chevy 5.4 rod and bored it .030 over. Wouldnt it basically be a long rod 306?

[1slo5.0]

Originally Posted by darkhorse50 This post got me thinking though, what would be the outcome if you ran a 289 crank with a chevy 5.4 rod and bored it .030 over. Wouldnt it basically be a long rod 306?

Rod length has nothing to do with cubic inch. A 289 bored .030 is a 293 no matter what length rod is in it.

[86er]

Originally Posted by 99Suprise How far do you think I could stroke a 351 Cleveland?

Im about 99% its 427 is the biggest that block can go

[grnstang]

yeah im almost positive 427 is as big as the 351 goes. Ive never seen or heard of anything bigger...those 427s are bad ass though

[86er]

Originally Posted by grnstang yeah im almost positive 427 is as big as the 351 goes. Ive never seen or heard of anything bigger...those 427s are bad ass though

you can take aftermarket 9.5 blocks bigger, but the 9.2 clevlend stops around 427

[PAzYearazzUP]

Originally Posted by The eaglenator I am wondering if someone could tell me. How do you fix it when your banks are running lean?

Sorry guy, that is like eliminating the pop out the exhaust. The air is cold and moving, so there are cold and hot spot all over the engine. Like the corners of the block where the water like a rushing river but there are calm areas? Sorta works like that. So, there is a cold runner and she condenses the gas being it was cold to start with and is not helped warming up in a cold runner. Kind of there in a few runners and heat locations where atomization is good fuel charge in one fire hole, a low pressure on the other cylinder fire; being it didn't receive a mist. It was more droplets that were too thick to fire. So, mis-fuel-fire she goes as the unspent toward the cat.

[PAzYearazzUP]

Originally Posted by TurboLX feel free to add...

The added basic quick notes:

1. You have this stroke that hangs the piston longer.
2. Stroke acts as a retarder rod.
3. The basic retard is to hang that piston so the burn keeps burning is one reason for stroking.
4. Like the article said, keep that piston there is the whole point so you can rod the fulcrum all that pressure on an easier way to keep building pressure is hang time or retard the piston.
5. Ideal is let her rip 10° ATDC. This of course is ideal middle is the 10° range you want all the fuel ignited and now begins the power stroke in action.
6. The crank needs to move over from center, so this is degrees in crank degrees, but that piston is waiting up there stalled and pressuring.
7. If there was no off-set in the rod, that piston would rise to TDC and stop. It needs that off-set to swing over from center.
8. That is why you could literally reverse the rods and run the engine backwards as it has been done at Indy long ago about that rod off-set.

This concludes some of the basics about rod length and the practical application of air exploitation.

[Turbo RANGER]

you're confusing

[detroitstang]

Im current trying to create a monster out of my 87 foxbody. i was wondering if any one could give me a hp prediction or tip for my project. this is what im working with so far.
331 stroker
soild crane z cam #443512
490 int/504 exh
268 in/274exh
duration@.050 lift 218 in /274exh
lobe seperation 112 degrees
rods scat 5.4 i beam rods
pistons kieth black flat top (non forged)
melling high volume oil pump,
double roller timing chain
280z flex plate
0-28 oz balancer
scat stroker 3.25 crank
Pro Comp Aluminum Heads 60cc combustion, 195cc intake runners
still havent decided on an intake... plan on driving daily. any input?

"Everyday in Africa Gazelle Awakes and knows he must run faster then the Lion or he will be eaten. Everday in Africa a Lion awakes and knows he must run faster the the slowest gazelle or he will starve to death. It doesnt matter if you are the Lion or the Gazelle all that matters is when the sun raises your ass better be running."

[1slo5.0]

Originally Posted by PAzYearazzUP Sorry guy, that is like eliminating the pop out the exhaust. The air is cold and moving, so there are cold and hot spot all over the engine. Like the corners of the block where the water like a rushing river but there are calm areas? Sorta works like that. So, there is a cold runner and she condenses the gas being it was cold to start with and is not helped warming up in a cold runner. Kind of there in a few runners and heat locations where atomization is good fuel charge in one fire hole, a low pressure on the other cylinder fire; being it didn't receive a mist. It was more droplets that were too thick to fire. So, mis-fuel-fire she goes as the unspent toward the cat.

WTF????