streetknight2

iTrader: (10)

Hard to search from my phone...wondering if this is the right casting # or are there more than one # for L92 heads

1badeagle

iTrader: (9)

Im not positive, but i think the 823 is a l92 head and 821 is the ls3 heads.

cam

iTrader: (9)

Those are correct and fwiw they are a slightly better version that the other type of L92 heads which are 5364 castings. The ports are slightly smoother with the 823's. Otherwise these heads are identical and flow very well for a stock head