By using one of the available 7/16" bridged rocker conversion kits, BBC/Cleveland Ford roller rockers can be used on the bridged rocker heads. LEP, KustomKemps --- Jim Blair <carnuck@xxxxxxxxxxx> wrote: > A: Speaking of bridged rocker heads, I have one from > an '80 258 for sale. It > is in need of work as it had 100,000 miles on it, > but it's the last of the > tin valve cover motors (cover included) Motor had > tossed 2 rods, but was > still running when pulled. (block was ventillated) > > > From: farna@xxxxxxx > Subject: Re: Rebuilt Engines on eBay > To: mail@xxxxxxxxxxxx > Message-ID: > <ADVANCES6267yRLVbND000007fb@xxxxxxxxxxxxxxxxxxxxxxx> > > The trans bolt pattern on the back of the block > changed in 1972 to the same > as the V-8. 71 and earlier sixes used a smaller bolt > pattern. A 258 was made > with the small pattern for 1971 only. Any of the > 64-71 199/232/258 engines > will bolt right into the 66. The head off your 66 > will physically bolt onto > a 1974 and later six, but you would have to install > an external oil line to > feed the shaft rocker head as the block for the > later engines don't have the > internal oil line drilled. It would be much easier > to buy a junkyard 258 > bridged rocker head. You CAN use a bridged rocker > head on the older engines, > just use the correct length hollow pushrods. Around > 72 AMC came out with the > bridged rocker (studs mounts) head, but due to a > patenet dispute w/GM went > back to the shaft in mid year and through 73 until > the dispute was settled, > then back to bridged rockers. So you have to remove > the valve cover. If > using a later model head there's no reason to use > the shaft type, which is > known t! > o have oiling problems. Just watch combustion > chamber size, as that grew > over the years. A later head may not have as much > compression as an early > one. > > You might be better off to rebuild the 232 you have, > as good running pre 72 > > engines are hard to find. Someone on the list may > have one though. > > > > __________________________________ Discover Yahoo! Get on-the-go sports scores, stock quotes, news and more. Check it out! http://discover.yahoo.com/mobile.html