Okay,

So, still playing with the idea of stroking my 460 and was curious if I could expect the same longevity from a 514 then if I kept it at 460? Ideally, I would like to get atleast 100k miles out of this motor, I would like to be able to drive it to events 10+ hours away and not have to worry about being stranded on the side of the road with a pretty hole in my block.

Thoughts, ideas, etc.?

MoMo

 

It really depends on the build. Hyper pistons will have greater longevity than forged if clearanced properly and not abused. A hydrualic cam is mandatory for the durability you want....flat tappet or roller is your choice.

For the most part, just look at how a factory engine is built and replicate it. Focus on things that make the engine more efficiant. If you're looking for 600hp, and 100,000 mile life, it's not gonna happen. The more radical the build, the less life it will have.

There isn't anything that's radical or dangerous about a BBF Ford stroker that inherently shortens it's life. The R/S ratio is still better than a BBC 454. You'll want to stay with a stroke of less than 4.3" so the piston doesn't get pulled out of the bore too far.

 

HP - reliability - low cost

pick 2 and only 2.

I would think a 514CI motor would have to work less than a 460CI motor to make 500hp.

Just don't beat on it and it should be fine.

 

Another way to help with the BDC issue is use a D9TE block with the longer cylinder walls, the piston at TDC even with a 4.5 stroke crank is still in the cyl pretty good on those blocks, but the 4.3" stroke is still the best comprimise IMHO for longevity and CID increase, just remember to use it with the 6.8" rod combo for the best ratio.

 

That thing about D9TE blocks having longer bores isn't always true. I know of somebody who bought three D9 blocks and all of them had the normal bore length. I don't doubt that some of them have longer bores, but I wouldn't waste my time trying to find one.

 

Thanks everyone for all the advice. This was what I was looking for!

MoMo

 

hmm thats strange (not doubting you) we had several of them at the block summit at Dave McClains place down in Cuba MO last year (actually Wes's place but put on by Dave) and all of them including mine had longer cyl walls. Also the D9TE blocks are actually the most plentiful since they were used from 1979-1996

 

The two D9 blocks I have picked up both have the longer cylinder walls.

It also sounded like they discovered at Dave's block summit, (for the most part), that choosing a 460 block (early vs late) was really a crap shoot for finding a block with thicker cylinder walls for a bigger bore size. I think the block summit results are posted on the web somewhere, I don't know where though.

 

is this what your guys are referring to

http://misn.com/~frd460/blocksummit.html

 

Yes thats the one he is refering too, if you download the sonicdata file showing the results of all the blocks, then click on #3 you will find my block that is currently being run in my race truck as a 528 cid stroker.