I would never use a stock cam when there is so much more readily available.
You really need to upgrade to a different camshaft.
You will get more power & better mileage.
The stock camshaft is very anemic.
Rhoads lifters will make a bigger camshaft feel like a small camshaft @ low RPM & give you more power when need in the upper RPM range.
Better idle, smoother.
So, in short, go with a larger spec camshaft it will be worth it.
I have used Rhoads lifters on a couple of engine builds.
They are a bit noisy, sounds somewhat like solid lifter camshaft.
http://www.rhoadslifters.com/MBHD
