Like I've said I would like to see actual dyno sheets on your combination.
I understand you are talking about intake centerline, which is not how the cam is ground, but how it is installed, via advancing/retarding...And yes I know why you advance a cam and the deference 106,108,110,112 or larger ICL and how it affects the power band as does stroke and heads,
Mike, preaching to the choir here I know, but to calm the natives. All true with LSA, but the cam has +/- 270-ish duration on both sides. Its under 55 degrees of advertised overlap and comparable to a 270H, just going with a smaller intake lobe based on his initial request for the 390I understand you are talking about intake centerline, which is not how the cam is ground, but how it is installed, via advancing/retarding...
That being said, I wanted to leave a word about Lobe Separation Angle, which determines overlap.
The tighter the lobe separation, the rougher the idle, and the narrower the powerband... Narrowing the LSA generally beefs up the max torque, and makes good power. Most typical older, American V8 Naturally Aspirated race cars will generally be between 106-108 degrees.
However, the tighter the LSA, the more free flowing the exhaust MUST be. The tighter lobe separation angles have more overlap, which provides increased scavenging. BUT, if the exhaust is not extremely free flowing, the exhaust will simply back up into the engine during all that extra overlap. I've seen cases so bad, that the throttle bores of the carburetor would be BLACK with soot. lol
This is a tough question to answerIowan, i may order a different cam when I order the balanced stroker kit from Lykins. I will see what kind of additional horsepower and torque it buys me. it may be worth a look, so thank you for bringing it up.
My427stang, I'm curious if I didn't already have what I consider the perfect cam for my original 390 goals, what would you ideally use for the 445 build? What would it gain me? And can my stock transmission accept it? I'm sure you already have these numbers in a holster. lol.
I had an edelbrock in a shopping cart on summit for a long time. Read many accounts of heat soak issues and tendency to lose prime overnight and such.I'm surprised that if you like the horizontal gasket above the float bowls that you didn't consider an Edelbrock carb.
Might be a good idea. You can exchange ideas face to face in real life... hear what he recommends, and if he builds it, he will be able to handle all the 'gotchas' ...and with an FE, there are plenty of small things to look out for.Like you said earlier, exact same goals as with the 390 just with a larger displacement since I’m considered reworking the bottom end of the motor. I will definitely give Brent a call. Might even bring him the motor and have him rebuild it. Might be fun to make a road trip or two