331 vs 347 stroker...

why not going 408?? all you need is to cut the shock towers.

 

A longtime Ford guy who builds hot rods for a living in Washington indicated the Summit Kits you order through the mail don't contain the same quality of parts that you get in the kits at their stores. He suggested and Eagle brand stroker kit.

 

because i dont have a 351 block/engine to go 408 to and im not about to buy one. I have a 302 sitting in my barn doing nothing. Dont want it to go to waist, so why not build it up?

ive always heard good things about eagle rotating assemblies. How are scat?

 

I had a Coast High / Probe stroker until I broke it. It was a good kit. Word from different engine builders is the Scat parts are more consistent than Eagle's, if you're considering either of those two. The Eagles often need to have crank journals reground to eliminate taper and indexing errors. You do have the proper tools to measure and evaluate the crank, rods, pistons? If not, pay to have a machine shop check them out. And remember, there are no SBF cast cranks cast in the U.S. anymore, they all come from China. A couple are finish machined here, though. If you're going NA in a stock block it doesn't make sense to buy a forged crank, the block will give up before even a cast crank. Power adders, especially nitrous, is a whole different story.

You'll have to step up to a bigger intake and better cam. Heads, too. Run 302 parts in a 347 and you'll still make 302 power.

 

Scat or eagle doesnt really matter as long as you have all the parts re-done at a machine shop.

Personally I would sell the 302 and buy a 351w block. Dollar for dollar I have always built more power with the windsor and done it with more reliability. Nothing against the 302, but the difference in 351w vs. 302 parts is about the same so why not build a 408 or a poor mans 393.

 

ehh, i dont want to go through the hassle with finding a 351 block.

Ive been looking on ebay as well for some kits and theirs some really good deals on ebay. I just might have to go that route.

Question. I know a 347 stroker is a .030 over bore with a 3.400 crankshaft right? What would a .040 overbore be with the 3.400 crankshaft?

 

I have built just about every form of a 351w there is. Its my favorate motor. With that being said I have not done many 302's. Although Im not sure if the 302 has an issues with this, it does come to mind that stroking a motor, is not a 100% gain in all areas. Generally speaking with windsors and all things being equal a 408 will outlast a 427 in longevity. So a 302 may or may not have the same issue. The reason being is that as you increase the stroke the rings move closer together and/or farther up on the piston. If the top rings are too close to the top of the piston, it sees more heat therefore it may not last as long. Another issue used in pistons to avoid raising the rings which Im not sure if it applies to the 302 is that at a certain stroke point the oil rings end up in the piston pin holes. Although its not always the case some people experience heavy oil burning issues. with more stroke comes a Shorter piston height which is another problem that effects lovgevity. For me If its a partial street car and in the windsor family I would do a 408, if its pure drag then the 427. You may do some research and see how the 302 ,331, 347 applies to not only stroking but reliability.

 

well, the 302 is one of the most reliable ford engines out there. I would assume with making it a stroker it would keep most of its reliability...though i could be 100% mistaken on this. Either way, i want to do it, so i probably will. Just have to get my funds together and a budget on how much im going to spend...