Now for a few ??? Where should my happy spot be as far as vac goes? or what are you guys seeing? Also as I suspected it is boosting 6lbs. So the 112lsa cam is def bleeding boost.. What would be the next pulley to get me in the 8-10 area? It is 3.40 on there now, other then that everything is working correct. Thanks for the help on some of my ??? guys, thats why I love this site. Now to get the tune spot on


John

 

Anybody (crickets in the backround)

John

 

happy spot? What does it read for vacume now? I read 19 inches at idle/in gear. 15-10 inches cruising. Is that what ya mean?

 

Yesir, I am really close to them numbers.. I take it if I had a vac leak the numbers would be affected by that correct?

 

I'd think so. I seem to watch it but really don't know if it is a good monitor of engine health.

 

Hmm thats the thing, everything else looks really good, including the vac numbers, comparing them to yours. Justin seems to think it might have a leak. I have checked everything other then the manifold gasket. It never leaked before, was in perfect shape, I can't find anything, fig if the vac numbers were off compared to others I would be able to use it to be sure if it had a leak, I dunno I am going to have and shoot him down a few more logs. This mystery has me stumped.. Damn truck

John

 

Just as I read that I heard some crickets start chirping outside my window.


What're your cam specs?

 

224 581 224 581 112lsa

John

 

With that cam you are not going to be pulling as much vaccum as Bill, I dont know exactly what it should be but I would guess around 14-13" at idle. Maybe I am way off.

 

my vac reads like bill's 20 at start up and around 15 or cruising. I've got 3.8 pulley on the 5.3 and only reads about 8psi. I either have a bad signal or bleeding boost from somewhere. I've only had a gauge on there a month so I'm not sure what I had when I first installed the kit. I've got a 3.6 and (3.4 or 3.2) I could slap on if I felt the need