Dezasterz

Where can I get these? Can you send a link?

thunderstruck507

iTrader: (18)

It's in post 13.

I am tempted to get those myself. Depends on what is in the classifieds here once I gather funds I guess.

Dezasterz

Hmmm those spdc heads look tempting I'll do some more research. Thanks for the replies everyone this is my first time working on an ls1 and doing any major work so all the suggestions helped!

codyvette

iTrader: (24)

If you can get a set of used 243's look up Lloyd Elliot.

omc8

iTrader: (7)

I want to thank you for posting that bit of info . Do you expect a 20 cfm difference if they tested with a 1.875 by 4" pipe on the exhaust v.s. none ?

86Z28USAF

iTrader: (1)

243s for sure flow better then 241's highly recommend 243 (799)

handyandy496

iTrader: (9)

Keep in mind large flow numbers @ .600 lift + are not going to help anyone using a plastic intake. Go with bigger .300 to .575 flow numbers for plastic. That's why these heads are so competitive and cost efective.

Felix C

Yep, recall that as well. Have always wondered what the difference in chambers was in terms of power.

Fry_

I still say 241's or budget aftermarket castings like TrickFlow 220 as cast or PRC 225 as cast. By the time you buy some good 243's for ~$350, then have them ported $1000, and buy some good dual springs $300 you're only $150 from buying PRC 225 as cast and $450 from Tooley or TEA built TrickFlow 220 as cast heads.