408 stroker build
#421
nope they're KB hypereutectic. this build is all motor, no boost.
i paid $310 for the pistons, i belive icons (KB forged) are about $480
ill start snapping some pics as soon as i have everything in the garage ready to assemble. the entire bottom end is either at the race shop or en route to the shop via UPS.
you're building a 408?
i paid $310 for the pistons, i belive icons (KB forged) are about $480
ill start snapping some pics as soon as i have everything in the garage ready to assemble. the entire bottom end is either at the race shop or en route to the shop via UPS.
you're building a 408?
#422
#423
Good price but if you have to mill them how much more is that plus dont you have to rebalance it ? Just never herd of running this kind of slug with a dome that needs to milled down at more cost. IDK my old man is the builder helping me with my stock rebuild as money permits. Should happen this summer.
#424
an hour of shop time ($70) is all. the rotating assembly won't need to be re-balanced. heck, most guys dont even bother to balance theirs.
piston modification is pretty standard in building a custom engine... you could have someone cast or forge custom pistons , BUT those are the BIG BUCKS
piston modification is pretty standard in building a custom engine... you could have someone cast or forge custom pistons , BUT those are the BIG BUCKS
#425
Dont think milling slugs is standard. Milling the block is standard practice at least from the articles i have breezed over and the book how to build big inch SBM (GREAT READ). Making a open chamber slug fit a closed chamber head isnt standard. There many more options(slug) out there to net better results. WOW not balancing the assembly ?
#426
hmmm, dont know if i could have found a better match in that price range, these are +23.5 dish pistons. but if you can find a set, go for it.
any competent shop will turn the piston crowns down to get a good quench.
the new pistons wont affect the balance of the rotating assembly
any competent shop will turn the piston crowns down to get a good quench.
the new pistons wont affect the balance of the rotating assembly
Last edited by matty675; 02-21-2011 at 04:42 PM.
#429
Read through the last few threads...
The KB356 pistons should be fine, and it is standard practice to mill the tops of pistons down when building a custom motor, but it will change the balance. If staying external balance, not a big deal, don't worry about it.. But if you are going internal balance, you will need to re-balance...Milling the pistons is typically done on pre assembly.
I'm having a 408 built too...I'm not going to do the work or the assembly, but my needs are bit different, it'll be seeing some high rpms (7K) and a 150 shot so everything is forged/balanced/blueprinted/squared/align bored etc...Pistons are up in the air as to which ones to use, but CR will be around 11:1 with the 2.02 ported and decked Eddys... Rings will be gapped for the spray.
I thought about a main girdle, but Ryan Johnson (link below) says they are a waste of time...They don't do anything. But with my spring pressures...I might go with a stud girdle.
http://www.shadydellspeedshop.com/index.htm
The KB356 pistons should be fine, and it is standard practice to mill the tops of pistons down when building a custom motor, but it will change the balance. If staying external balance, not a big deal, don't worry about it.. But if you are going internal balance, you will need to re-balance...Milling the pistons is typically done on pre assembly.
I'm having a 408 built too...I'm not going to do the work or the assembly, but my needs are bit different, it'll be seeing some high rpms (7K) and a 150 shot so everything is forged/balanced/blueprinted/squared/align bored etc...Pistons are up in the air as to which ones to use, but CR will be around 11:1 with the 2.02 ported and decked Eddys... Rings will be gapped for the spray.
I thought about a main girdle, but Ryan Johnson (link below) says they are a waste of time...They don't do anything. But with my spring pressures...I might go with a stud girdle.
http://www.shadydellspeedshop.com/index.htm
Last edited by Adobedude; 02-21-2011 at 07:15 PM.
#430
Dont think milling slugs is standard. Milling the block is standard practice at least from the articles i have breezed over and the book how to build big inch SBM (GREAT READ). Making a open chamber slug fit a closed chamber head isnt standard. There many more options(slug) out there to net better results. WOW not balancing the assembly ?
BTW, that motor on the cover is for sale on Moparts.com...