I am bringing two engines down to Kentucky on November 15, going to have a couple dyno days, good reason to hang around with Brent, escape Nebraska for a working couple of days "off", along with a good midpoint for the owner. This is the first of two 461s, the second I will post in another thread. I figured I'd throw it out to see what people think.
The reason I say some cheating included is that I have dyno data for a nearly identical build, same dyno, and I will include the changes here, so you are really only guessing the difference of the parts.
Here is the first CJ that was done on the same dyno.
http://fepower.net/simplemachinesforum/index.php?topic=7690.0Here is the engine to be dyno'd, different engine completely, but listed all the changes from the last one
461 cid 428,
10.3:1, Racetech
dish pistons,
1.0/1.0/2.0 Mahle rings,
.010 above deck, .041 quench (all minor changes)
Heads went from CnC ported CJ iron, to
Trick Flow heads name milled off to hide them a little
Intake went from locally ported CJ iron, to
Joe Craine ported -F PI intake flowing between 350-370 cfm per portCam went from 237/237 .634, 114 LSA on 106 to
235/237 .634, 114 LSA on 107Carb went from 830 cfm Quick Fuel Brawler to
custom built Quick Fuel 780 cfm vac sec Connecting rods went from SCAT 6.70 to
Molnar 6.70 much lighter
Windage Tray went from Ford factory CJ to
Canton ScreenOil pump went from M57HV out of the box,
to Doug Garifo bluepwinted M57HV with standard spring, shimmed with his provided +10 psi shimAs you can see, many small changes from the combo this summer, the biggest being the Trick Flow heads. No prize forthcoming, but there will be a second engine to guess, and all the glory that comes with guessing it correctly!
This one is going in a 1968.5 CJ fastback Mustang, 4 speed, 3.91s