Richard,
I think you'll enjoy the build very much over the long run.
I computed the 2 cams you mentioned here and one other.
Through the series of runs I was easy on the clutch figuring your use. Unless changing clutches is your hobby!
First my least favorite, the 218-218 duration:
Torq 400 at 3400
Powr 342 at 4900
2.31 60ft
14.54 at 95.9
My next favorite, the 212-218 comp cam:
Torq 401 at 3400
Powr 338 at 4900
2.29 60ft
14.51 at 95.9
Finally my favorite, maybe cost wise as well, I bet you could save enough to almost buy a 4" crank, well maybe not quite. Depends on your prices over there etc. Anyway here is the 204-214 cam, it is also the closest in behavior to the original 390gt/428cj cam, a little smaller but cut a little tighter:
Torq 407 at 3200
Powr 329 at 4800
2.24 60ft
14.44 at 95.7
The small torq advantage dominates here and this will also be the strongest one if you floor it from 2000.
But the bottom line with these numbers is they are all so close, the car and the computer could easily differ by a tenth or so. So any of these cams would do very nearly the same thing.
I used my "more advanced" but maybe or maybe not better miles-per-gallon estimator on the final combo and got:
11.1 mpg city
18.3 mpg highway
A very enjoyable ride even with pricey gas!
PS I just saw smoak's comment about the 10.0cr and I agree it is right on the edge of getting away with, I think you'll be ok on premium 91 octane. Even on regular 87 octane it will be fine the day you build it, but when any carbon builds up then it will knock on regular.
This message has been edited by werbyford on Jul 9, 2008 6:42 AM
