I'm thinking Rhodes lifters may be a good thing to try in a engine built for rpm. If you don't mind the clatter... Brian Seeley has Andrews old engine already built for such a purpose. It's back in Mass though... -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 " I was different before people dared to be different" -------------- Original message ---------------------- From: Tom Jennings <tomj@xxxxxxx> > On Monday 06 August 2007 17:34:53 Matt Haas wrote: > > > I can attest to that. My 67 American has a 199 and an automatic which > > makes it a slug around town. Once it's up near highway speed, it's > > actually okay. The 232 in my 68 American (which was not rebuilt to stock > > specs) with a 3 speed manual is a totally different beast. It's really > > torquey. However, I don't think you can rev the wee out of either of > > them when not in neutral. The 68 tops out at 85 mph and if memory serves > > (which means I'm probably wrong), that's not much over 4000 RPM. Both > > cars are great highway cruisers. They are both happy around 70 MPH and > > when I took the 68 to Kenosha in 2004, I'm not sure I did much slower > > than that until I got to Chicago. > > Sounds like my experience. I didn't mean to imply that revving is some new way > to make HP. Just that, in the narrow range of cars that have fairly > lightweight drivelines, the ability of our modest six to rev uysefully > another 1000 rpm (to 4000 or maybe 4500) is inexpensive "low hanging fruit". > It ain't a V8 conversion, but some fairly easy head work could really gain a > bunch of effective HP without serious driveline changes. > > I think there's two things limiting RPMs on the 64-up six (up until balance > issues matter, which I assume is 5000 up). Valve train mechanical issues and > camming. The camming you buy a new lumpy stick and install it. The mech stuff > you mildly port and fiddle and leave as-is. > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list