Where to degree this cam ?
I get it; the cam is already bought, and the engine is already built; So then, I'm with marco; dot to dot, and what will be will be.Once you wind her up, she'll rip chit reasonably well. And if it's too soft for you, just throw more TC at it.
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IMO, in a streeter, I wouldn't put that cam in there at all, unless you chose it for a specific reason, ie the idle lope.
IMO it's the wrong cam for that combo.... until around 3500 and beyond. Why? Because the bottom end, at 9.4Scr, is gonna be soft. If you install it at split overlap/110, then the ICA will be 67*, and at 9.4Scr, your Dcr will be down at 7.38. Your cylinder pressure will be around 139psi@115VP@1000ft elevation.
How soft is that? That's about what an 8.0 Scr teener makes. So from stall to 3000/3600 it will feel like a low-compression teener. Well,with the 2500TC, it will feel a bit stronger, like an 8.0 teener with a 2500TC,lol.. With 3.55s; this is about 27 to 32mph.
But why is this? because that cam has ultra slow ramps, taking 52* to go from .006 to .050 and back, which makes for a very late closing intake. That's just how hydraulic rollers are.
If you install it at say 106, then the numbers are 9.4/7.59/144psi@123VP@1000 ft. Ok, 123VP is like an LA 318 at 8.5 Scr, So it's better but.............. as you can see it's only 5psi. However; those 5psi translate to 7% more VP.
More VP is a good thing until you get to about 140/145 in an A-body. After that it's just a tire-fryer.And; VP is only important below about 3000 rpm.
The problem with putting the cam in at 106 is that to get the extra 4* of compression we stole it from the power stroke, so now that is 4 degrees shorter ending at 101, which means some pressure is going out the pipes instead of being applied to the crank. What does that mean. Well, you paid good money to make that pressure, and now 4 more degrees of it are going straight out the pipes, decreasing your fuel efficiency, and you can't do a dang thing about it.
Your application wants a tighter LSa and your engine wants an earlier closing intake.And a streeter wants more degrees dedicated to compression plus power.So if it was me I'd just put a cam like that, in there, in the first place.
This cam, in at 110(split overlap) wants 10.5 Scr to get a Dcr of 8.2 and 160psi@ a nice 133VP, at 1000 ft .
With a tight-Q and closed chambers, you could push 165psi; and at 1000ft that would change the numbers to 10.7/8.37/164psi@136VP....... now you're getting somewhere. 136 would work with 2500TC and the 3.55s..
But I get it; the cam is already bought, and the engine is already built; So then, I'm with marco; dot to dot, and what will be will be.Once you wind her up, she'll rip chit reasonably well. And if it's too soft for you, just throw more TC at it.
With 3.55s; 65 is about 2870, so I'd go with a 2800. Now you are close to not caring about VP
