As below, it can be done, but why unless you don't actually have any 343/390 heads? The increase in exhaust flow would be offset by the lower compression. But perhaps that's what you're after... :) Ken Quoting Todd Jesme <jesme@xxxxxxxxxxx>: > Andy, > you can bolt them on but you will need to buy a set of step dowels from your > favorite AMC parts vendor, if you want to use the smaller 7/16" head bolts. > If you want to use the more desirable 1/2" head bolts used on 70 and up > V-8's you will need to have the head bolt holes in the block drilled and > tapped. > > Todd > MN > > -----Original Message----- > From: raysinvegas@xxxxxxxxxxxxx [mailto:raysinvegas@xxxxxxxxxxxxx] > Sent: Thursday, April 14, 2005 7:56 PM > To: mail@xxxxxxxxxxxx > Subject: 401 heads on a 343 block? > > Hi, can I put '75 401 heads on my '68 343 short block? Thanks in advance! > > Andy Ray > 64 440H (2) > 68 Jav SST 343 > > ============================================================= > Posted by wixList Archiver -- http://www.amxfiles.com/wixlist > > > > > > > > > > >