Originally Posted by lsrholder
:idea: Zip, interesting opinion(s) on the 400 blocks. Many say don't even to bother building one, due to cap walk, then the real examples of how long they have lived get posted.
Do you "think" that your longevity results are due to the block filling, mostly, or just attention to detail in block preparation ? For those who have machining finished and are just about ready to assemble, block filling appears to be a no-no, due to cylinder warpage/movement, from the expansion of fillers used. Others say don't do it ! When engine warms up, block/cylinders must be able to expand equally & filler won't allow this to happen.
Then we have the choices between f&r cap straps vs. a complete girdle assy. Your posted site doesn't have any pics of the girdle(s) available. Would be nice to see one & be able to compare with other brands of girdles.
As always, thanks for any info you can supply, you haven't misled or let me down yet.
I don't know, i'll build one next week, or down the road. i'm not worried about them. i've built many of them and have not had problems, others have. I'm not saying that they are not a problem blk, i just have been lucky i guess, but i have always sonic tested the cylinder walls and moved the bore to to the most wall thinkness.
Zip.