Annular boosters on a Tunnel Ram

71GSSDemon said

Another thought about your dyno test, is what Mattax posted in the vacuum advance myth section, maybe it needs to be a higher load during your test?? Guessing here. Idle is surprisingly high load, and before emissions concerns, fairly rich. The engine is producing very little torque at 500 or even 600 rpm. A percentage of that goes to overcoming friction. So best to think of it as a high load, somewhat rich and dense situation.

Click to expand...

What I did was look up the power @50 mph on my chassis dyno. You can see those numbers on the picture of the chart I posted. I put hp numbers next to a couple of torqe numbers for reference. I think a 73 charger was 15 hp @50mph. I'm just taking Mustang dynos word for that. I think the loads I used should be close to cruising.