I have a 1974 Eleganza with the 455 and fortunately a complete set of
manuals. One of the things I have been unable to find in my manuals is
the engine specifications regarding the torque and HP/rpm. My old 1973
motor manual with the Olds Toro lists the Toro motor as :
HP Max torque
225 360
250 375
270 370
I suspect the GMC camper is closest to the first 1973 listing with the
RV cam. My interest is the based on the ongoing final drive ratio
discussion. I want to verify and calculate my optimum performance speed
on the road considering my tire size, final drive ratio, engine peak
torque specs, peak hp specs, vacuum readings, RPM, and Ect. My limited
time on the road indicates my coach seems to run best about 2350 to 2400
RPM which is about 60 to 63 MPH based on driving conditions.
A second reason is to fine tune my exhaust system. My coach doesn't use
the traditional mufflers. I have Supertrap exhaust that alows me to
optimize or tune my exhaust to my engine and driving characteristics.
Following is the web site for Supertrap for any one that is interested.
http://www.supertrapp.com/how_it_works.htm This seems to solve some of
the heat problems and certainly can reduce coach noise with improved
exhaust performance.
I am picking up a 66 Toro final drive with the 3:21 ratio. I know this
drive won't make a significant difference but, it may provide the extra
rpm to put me in the optimum performance range for my coach.
Steve & Rosie
74 Eleganza SE
manuals. One of the things I have been unable to find in my manuals is
the engine specifications regarding the torque and HP/rpm. My old 1973
motor manual with the Olds Toro lists the Toro motor as :
HP Max torque
225 360
250 375
270 370
I suspect the GMC camper is closest to the first 1973 listing with the
RV cam. My interest is the based on the ongoing final drive ratio
discussion. I want to verify and calculate my optimum performance speed
on the road considering my tire size, final drive ratio, engine peak
torque specs, peak hp specs, vacuum readings, RPM, and Ect. My limited
time on the road indicates my coach seems to run best about 2350 to 2400
RPM which is about 60 to 63 MPH based on driving conditions.
A second reason is to fine tune my exhaust system. My coach doesn't use
the traditional mufflers. I have Supertrap exhaust that alows me to
optimize or tune my exhaust to my engine and driving characteristics.
Following is the web site for Supertrap for any one that is interested.
http://www.supertrapp.com/how_it_works.htm This seems to solve some of
the heat problems and certainly can reduce coach noise with improved
exhaust performance.
I am picking up a 66 Toro final drive with the 3:21 ratio. I know this
drive won't make a significant difference but, it may provide the extra
rpm to put me in the optimum performance range for my coach.
Steve & Rosie
74 Eleganza SE
