I recently put a LS1 into my 48 chevy, so I have done quite a bit info lookups during the process of that project. There are a lot of different guys out there that are casting there own heads, being these guys are in the market to make a few bucks they even may consider the aspect of developing a said head. Also note that the LS head is a 15 degree head which is why you can put in some bigger valves in these heads. A Lot of the aftermarketeers also CNC these heads and are pushing over 300+ cfm on the intake side. It was brought up here about the IEIEIE valve lineup of the heads, Bill Mitchell just recently came out with a SBC/LS style head that will bolt onto the SBC/ Looking at the L92 head maybe a bit to big for something of the small bore unless you are looking for all out performance. For the aspect of testing ones theories of using an LS head there are tones of earlier stock LS1 series that most end up pulling off as most of the guys will go for the LS6 (243) castings, the earlier heads usually had 851 or 241 castings, the later 241 where also found on the LS2 motor. Also not that the runners are on an average of 210+cc on these style heads. Some of the truck engines like the 5.3 have shorter runners which are also popular upgrades to the LS motor to increase lowend tourque. Oh on another aspect if yoou have never handled one of these heads they are even considerable lighter than an aluminum sbc head.
