Background: in the parts gathering phase for a stroker motor for my Burb.  It's a '91, 3/4 ton, 4x4, that will mostly see light "family excursion" duty, but I want it to be able to tow about 8K lbs without too much of a problem.  4L80e tranny.  I have a 4-bolt block that I'll get bored and clearanced for a 383 rotating ass'y kit.  (Scat or Eagle).  I'm shooting for 9.5:1 CR.  I've got some professionally rebuilt 062 vortec heads, and I have the GMPP 4-barrel intake for those heads.  Now here's the caveat I mentioned above: I'm going to run the original throttle body injection (TBI) system and related in the burb, don't want to go to carb because of the electronic tranny.  So I have an adapter for the TBI to the 4 barrel manifold and I also got an enlarged throttle body to use since I'll need more air for this bad boy.  (I'll probably also have to upgrade the fuel pump because more air means more fuel).  I know I'll have to get a chip burned - I'll use Old School EFI to help me with this as he's right in my home town of Vancouver, WA.  

Here's the crux of my post: trying to figure out what cam to use.   The TBI truck blocks did not have roller cam, but they had all the provisions for them so good news there.  Along the way I also bought a core vortec motor for the heads and roller valve train.  My plan right now for the cam is to just get the L31 stock roller that came in the core motor cleaned up by a cam grinder and use that.  Along with the roller lifters and other valve train parts ("spider" and keepers).  Is this a bad plan?  I know the hot rodder types will say I'm leaving too much power on the table by using the stock vortec cam, but I'm not looking for high HP numbers at high RPM, just want a good cam for a heavy 4x4 truck.  Also looking for decent economy although I know that is probably a pipe dream!  I have thought about the 383HT/ramjet cam, but I'm worried the 109 LSA is too tight for the TBI system, even with a chip.  Feel free to throw rocks at my plan, but offer other suggestions, too!

Sorry for the long post but I thought it would be useful to post on this site.  I could post on other forums, but you seem to run into a lot of opinions that are often not well thought out and may cause more harm than good.  I know there are a few of you here that can probably offer some good advice without too much rhetoric and flaming to go along with it.  Thanks.  

 

But you're right, I will definitely be calling COMP or Lunati and asking for them to give me some suggestions.  Perhaps I would be able to compare the specs of their suggested cams to the stock vortec and go from there. 

So the cam you posted won't work for what I want to do since I'm converting to full roller, but the specs are pretty close.  Also those lift numbers are generally too high for stock vortecs, but there are things that can be done to make them work.  I need to call the builder that did the heads I have to see if they machined them for higher lift cams.