Ford 7.3L gas power numbers
430hp/475tq Looks like it's designed to be a winner. Video
Forum Discussion
The approx 25% difference is in the ball park and add higher compression ratio (more PSI before ignition) and of course the fuel with higher BTU’s per unit volume measure
Meaning that gasoline about 18% to 20% LESS BTU’s (less energy} than diesel, per gallon. Plus diesel has less of an issue with pre-ignition (direct injection helps gassers, but that potential issue is still there that diesel generally doesn’t have to deal with
It boils down to PSI on the piston top and how much surface area and/or mass you have to move the heat to the rejection device(s)
Since less energy and lower compression ratio, gasses’s need to rev higher to do similar work
Then the rest of the metrics. Like, since higher compression ratio, the components are much larger to handle the higher PSI’s...but that means more weight/mass to throw, which limits the upper end RPM limits
Must touch on the current serial, twin turbo V6’s that has huge numbers...yes they are much larger than N/A gassers, but since small displacement, their piston/rod rank/etc weight/mass to throw is small in comparison to diesel.
No right or wrong, just preferences...I’ve preferred gasoline over diesel all my lift, as others prefer it the other way...
On that, prefer big block gassers over small block gassers...
Meaning that gasoline about 18% to 20% LESS BTU’s (less energy} than diesel, per gallon. Plus diesel has less of an issue with pre-ignition (direct injection helps gassers, but that potential issue is still there that diesel generally doesn’t have to deal with
It boils down to PSI on the piston top and how much surface area and/or mass you have to move the heat to the rejection device(s)
Since less energy and lower compression ratio, gasses’s need to rev higher to do similar work
Then the rest of the metrics. Like, since higher compression ratio, the components are much larger to handle the higher PSI’s...but that means more weight/mass to throw, which limits the upper end RPM limits
Must touch on the current serial, twin turbo V6’s that has huge numbers...yes they are much larger than N/A gassers, but since small displacement, their piston/rod rank/etc weight/mass to throw is small in comparison to diesel.
No right or wrong, just preferences...I’ve preferred gasoline over diesel all my lift, as others prefer it the other way...
On that, prefer big block gassers over small block gassers...
ib516 wrote:
I had a Cummins Diesel and then a 6.4L Hemi. Both did the job. The Gasser just used more fuel (25% or so) and more RPM
