I've seen A LOT of posts about making HP with a 318-So why is it so ???
Late to the Desktop dyno party, but a couple observation using the Dynomation version.
@stixx, @PRH and @toolmanmike.
If you recall we compared a 340 build to some of the magazine 340 dyno tests.
The only way to get the program to show a curve that looked like and peaked at the same rpm as the real dynos runs was by estimating the actual .006 using the .004.
Compared with for example Hot Rod's Test at Edelbrock in '69 or some of the more recent ones.
Edelbrock LD4B
A couple things I've noticed with Dynomation and I assume desktop dyno.
The fill empty method makes big jumps in the curve when the hi-po intakes are selected, bigger carb, etc.
Putting in actual head flow numbers helps get a little more realistic results sometimes.
I started to fiddle around with the rod ratio (use a chevy with same cam for example) to see if the program took into consideration dwell time - didn't seem to.
To use the wave-flow model, one really needs to have a bunch of measurements including the port volumes. Good for learning the effects but otherwise GiGo.
Between 2010 and 2014 @CPDave and I ran various sims on both Dynomation and Pipemax. I recall he thought they came fairly close and pipemax was was useful in predecting the effect of changes to the exhaust. I don' have any handy graphics for the Zebradart 318 ot post 'em.
Who has one to measure?
Late to the Desktop dyno party, but a couple observation using the Dynomation version.
@stixx, @PRH and @toolmanmike.
If you recall we compared a 340 build to some of the magazine 340 dyno tests.
The only way to get the program to show a curve that looked like and peaked at the same rpm as the real dynos runs was by estimating the actual .006 using the .004.
Compared with for example Hot Rod's Test at Edelbrock in '69 or some of the more recent ones.
Edelbrock LD4B
A couple things I've noticed with Dynomation and I assume desktop dyno.
The fill empty method makes big jumps in the curve when the hi-po intakes are selected, bigger carb, etc.
Putting in actual head flow numbers helps get a little more realistic results sometimes.
I started to fiddle around with the rod ratio (use a chevy with same cam for example) to see if the program took into consideration dwell time - didn't seem to.
To use the wave-flow model, one really needs to have a bunch of measurements including the port volumes. Good for learning the effects but otherwise GiGo.
Between 2010 and 2014 @CPDave and I ran various sims on both Dynomation and Pipemax. I recall he thought they came fairly close and pipemax was was useful in predecting the effect of changes to the exhaust. I don' have any handy graphics for the Zebradart 318 ot post 'em.
