Why are you not using the dyno to break in the engine? The dyno can load and unload the engine to perform break in. Or at least my buddies superflow dyno has a program to do that.

Dave

Dave,
running the engine on a stand allows time to address any unforeseen issues (leaks, etc) on my time. Running through several heat cycles before hand allows me to change from break-in valve springs and rockers to the performance parts and re-torque heads on my time. Also get in the ballpark on jetting/timing on an all new build that I am not sure what to expect. Preliminaries will be done. Rings will get broke in on the dyno. Dyno time isn't cheap.
Thank for your interest,
Dean

 

When Ted was running my 4-71 motor on the dyno he said it really picked up horse power with one of those 1000 something CFM Holley's. Was a bit surprised. My engine was built to be streetable so its really not built for maximum power.

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

Moon shadow,
Ted had mentioned to me that I would need a bigger carb. I have a boost referenced 780 cfm carb I will try after break-in. I am negotiating with a friend on his 1050 cfm 3 barrel.
How many cubic inch and boost is your 4-71 motor, if I may ask.
Thanks for your interest,
Dean

 

Dean;

I broke in my 331 cu. in. blown motor with a 650 Holley double pumper but it was clearly too small of a carb. This was with my VS-57 set-up which I'm no longer using. Next test with the 471 blower will be with a 750 double pumper set up for blow through with no choke horn

Rono

  Ron Lane,  Meridian, ID

Ted finally set mine up with a 650 double pumper. For the street I would be concerned about the bigger carbs. On my drive home from Clevland last year I actually averaged just under 18mpg in the Vicky. I was amazed, of course the AOD overdrive and 3:80 gear helps. My engine is 325 cubes. I'm under driving the supercharger so about 6lbs of boost is all. Runs perfectly on pump gas too. 



Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

UPDATE ON Y PROJECT
Health and family issues have slowed progress, I have broken in the cam with the low lift stock rocker and weaken springs. then installed the high lift arm and brought the springs up to tension (shims), ran the engine with carb and stock intake through 3=4 more heat cycles, now have blower on and running, was trying a little higher rpm today and the water pump pulley broke at about 3k rpm. got to fix it before april 8, my dyno appointment is then at R&R performance in spring lake park MN lake park MN

 

Dean  looking forward to a report on your day at R&R.. Hope the Y gave that dyno a good workout..

dyno results:
299 cubic inch
503 hp @ 6100 rpm
450 ft/lbs @ 5000 rpm
10.5 boost

 

Very nice numbers. What is the pulley ratio and how much boost are you getting?

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire