Hey guys/gals,

I'm starting to get into the ls1's and was looking at stroker options for the ls1?

What stroke/rod/piston combos are used in the different configurations?

Which one's need an oil support ring?

I looked quickly and did not find a quick sticky about strokers, so if you could point me in that direction, that would be fine as well

 

If anyone can point me in the right direction...

 

i can't remember anything about the oil support rings but here is a few stroke/bore combos, most use 6.125 rods.
382-384 = 4.0 stroke,3.898"-3.910" bore using the stock ls1-ls6 block

now when using a 6.0 or ls2 block.
402=4.0" stroke 4.0" bore
408 = only difference is a .030" bore
414 = bored .060"
usually people use the iron block for a 4.03'" or 4.06" bore because the aluminum ls2 block may be alittle thin.
418 = 4.1" stroke with a 4.030" bore, 4.06" bore makes it between a 424-425 cube.
if you use a 4.125" stroke with a 4.03" bore and 4.06" bore the cubes is 421 and 427.
then you get into stuff like the l92,ls7, or sleeved or aftermarket blocks but i'll stop now.

 

Heres a site I found with maybe some useful info...just scroll down a little bit. Ill look and see if i can find a better one.

http://www.highperformancepontiac.co...cks/index.html

 

Thanks guys, that is a good start

I thought the 383 was with a 3.75" stroke? Glad I was corrected

Any other info or links guys?

Thanks!

 

an old school 350 sbc bored .030 over with a 3.75" crank is a 383 but the lsx mills are totally different.

 

heres another solid, strictly informational, site on this.
http://www.gmhightechperformance.com...1_stroker.html


to look into who to buy from, i would stick with some names we know...like lunati, eagle, etc...trusted quality forged goods for your project. i must say i contemplated stroking about a year ago, and still might just not right now...boring the aluminum block should be kept to a minimum while you should put a longer stroke in to achieve the cubes..unlike the old school SBC 350s.....anyways, if i see nething else ill post up. goodluck.