I think that you will find that the C responds to the 106 and makes it come alive at rpm.
I think, it's always dangerous to try to anticipate what the designers were thinking, was that the 5.7 with iron heads is likely a little sluggish off of idle anyway? Why not put it into it's rpm range sooner?
The entire line of the "street/strip" CompCams Cleveland cams are built on the 106. They do push the limit though.
I have the solid lifter version with the .605 lift. It revs like an electric razor. You can definitely feel the difference with this timing over 3000 rpm vs a real street cam. The engine is not sluggish with this timing at all.
Over 3000? You feel it off of idle. THIS IS your 500hp Cleveland.
Smaller port heads also quicken the throttle response to it a lot. I'm using A3 heads that came off of a circle track car to go to smaller ports.
Can you make a scientific experiment with it and test every possible combination available to you on a engine dyno...sure? Some have and will continue to. Power to them. I haven't got time for the pain.
Strangely enough, mine wants to idle at 650rpm vs. the expected 1,000 to 1,100 rpm. Once the engine cover is on, it is quiet in the cabin but with my 180 headers it sounds like a marching band at idle. Boom, boom, bada, bada boom, boom.
Listen to the sound bite that CompCams put up on their web page. That's mine at 1,000 but mine idles down much more. You can hear the differences between the idles with the different duration series.
If you love Harley Davidsons you will love it. If not you will hate it for sure. With a free flowing exhaust, it sounds like a 5.7 liter Harley would.
It has actually turned this now into a project to quiet the headers and mufflers down, but anyone with a Pantera would understand that even with the stock set up. This isn't a car a cat burglar should have picked, but is that a political statement? I don't know?
I personally think it turns the engine into a true street/track engine but that's just my opinion. A lot of people want their car quiet like a Prius so that they can sneak up on you? As far as being opinionated, if you vote you are political, if you say "oh God" when you think you are dying, you are religious and if you like the tall Barbie over there with the long legs that unfortunately for her hasn't seen her feet since she turned 14, then well...you fill in the blanks.
All depends on your own personal expectations and desires? I'll paint her toe nails for her, and tell her the shoes look great. She doesn' need to see them? I can accept the trade offs.
