If you recall, I installed a 347 in my Tiger and wanted to stay with a 4100. Long story short, Ed built me a 4100 for the 347. I was not happy with it (no knock on Ed) then tried a Holley 600 and 700 CFM Double Pumper. They did OK but still was not happy.
Here is where I am today -
Running the brand new Holley Ultra HP 650 carb.
I am in the middle of tuning it with a wide band O2 sensor with gauge.
Neck deep into:
Idle Feed Restrictions
Power Valve Channel Restrictions
Idle Air Bleeds
High Speed Air Bleeds
It is coming along nicely as I am shooting for a tune that has the engine cruising at an AFR of 15, WOT 12.5-13 and a partal throttle under all loads of 13-14.
Here is a bad video of when I got the WBO2 sensor http://youtu.be/86erf8z_cKY
66 Sunbeam Tiger
Fort Leavenworth, KS
That is one sweet ride!!
Ya, it took a fair about effort on the dyno to get my 4100 to perform.
It's great for the street. The odd time I get to go to the track I use a Shelby 715cfm. It's good for another 1/2 second.