Seven inches of vaccum is not to bad.Gee. I think that made me feel bad.Used to be a 290º@.008" duration cam was close to as hot as it got on the street.
I'll have you know I have over 7" of vacuum at idle!!! ;) ..not eight, but over seven.
For sure. I went the other way on my 1965 273, installing the later aluminum water pump. The reason was because I could only get the later radiator at Autozone. That was early in my resto before I knew of options. I didn't have to change the damper, but couldn't use the TRW power steering pump because the aluminum water pump doesn't fit its brackets, so had to change to a later Federal pump. I also had to rearrange the belts, sharing the water and p.s. pumps on the same belt (recall). I thought I could use the TRW p.s. pump on my 1965 Newport, but found it's TRW pump needs a different pulley and the pumps have different diameter shafts. "Nothing fits, or is easy" is the best summary.
Would you recommend the standard or the heavy duty clutch for that? Tampa Bay heat.. then I'm also looking for performance gains, then some people have told me it seems like the heavy duty clutch Never disengages fast enough...
The HD unit will not slip a much as the standard.
