engine and drivetrain EFI...how much HP? dyno?

[LeeJohn]

Wow the torque!  Is that due to the diff?  Is your top speed like 70mph lol

[tomorrowcalling]

29 minutes ago, LeeJohn said:

Wow the torque!  Is that due to the diff?  Is your top speed like 70mph lol

 

Note that the scale is in Nm not ft.lb, overall torque is similar to yours  (131 ft.lb)

 

Actually theoretical top speed in 5th @ 7000 rpm is still 122 mph, I've seen at least 105 mph in a stage, I say "at least" because the next run through the stage was faster but I didn't dare take my eye's off the road.

 

I'd like to go to a 4.9 or 5.1 which would bring the overall ratio of 5th down to where 4th is at the moment,  as we don't ever use 5th in a stage

Edited April 26, 2016 by tomorrowcalling

[jimk]

Examining the torque curve on the Franken Engine, you can see where there are two air flow resonance peaks in that setup.  Air flow gives torque and I expect the fuel flow is higher for those peak areas also.  Did you log that run on the EFI system, it would show the fuel flow.

And, it also shows the air flow really drops off above 5k rpm.  Graphs I made during some testing with that manifold shows the same characteristics.

[tomorrowcalling]

For the OP, here's another data point.

 

Stock engine, stock manifold and down pipes with 2" exhaust

318 inlet manifold and throttle body.

Link ECU

Graph shows Flywheel power divide by 1.09 to get axle HP