fsuforever

I am currently looking @ a set of heads ,The Seller on the heads say they are the 317 heads ,is this the heads that come from the factory based off the ls2 ?Has anyone heard of the 317 heads ?I Think he sayed they were off of an Lq9 motor ,so that tells me the 317 heads & The Lq9 heads are the same head correct ?Anyone on this forum that can confirm what these heads came off of will be appreciated ,thank you, I asked the same q in another forum & Did some research on these heads on a diffrent forum , fwiw , i found out these heads are a 6.0 ltr head that came off of a ss silverado ,also they are a 71 cc head

C6400hp

LS2 are 243 heads

johnodrake

At least most are. There was a long thread a while back about 243 heads and some other numnber. Net: Just a casting number.

Best heads to replace LS2 (243 casting) seem to be the L92/LS3 heads. or one of the aftermarket like AFR 205 or 225.

fsuforever

Theres a rumor going around is that fast is gonna make an intake for these L92 heads .the only other option for this head /intake combo is the L76 ,this intake does not flow well enough for big cube forced induction motors ,i am looking for another head besides the L92 ,the 225 afr would be a good choice for deeper pockets than i wanna spend

HawaiiC6

I would recommend in dealing with a reputable company rather then take someones word, remember he wants to get rid of those heads. I would stay with AFR heads and depending on your needs there are two being offered 205 and 225.