350 4 bolt but I think the HO 305 heads have bigger valves and higher compression. I had the stock 305 heads on the Elky when I bought it. Ran it that way for 8+ years. When I blew a head gasket and put 350 heads on it the compression went way down and ran like puke In comparison. I think it will be better than what I have unless there are flat tops in there when I open it up. I already run premium to keep it from pinging. So it packs a punch. Just smokes real bad when it starts an it is real embarrassing. Plus I don't want to wait till the coolant and oil are mixing before I do the deed. JC. Sent from my iPhone On Nov 12, 2010, at 7:20 PM, Chris Lindh <chris@xxxxxxxxxxxxxxxxx> wrote: > Does the Monte have a 305? > > > Rules: Please play nicely with others. > > -List members page (text & pic links): > http://www.myelcamino.net/eclist.htm > -List members page (all pics): > http://www.myelcamino.net/ec_list.htm > Rules: Please play nicely with others. -List members page (text & pic links): http://www.myelcamino.net/eclist.htm -List members page (all pics): http://www.myelcamino.net/ec_list.htm