140 off road cam first gen

[bcaudill317]

When running a first gen 140 off road cam how much vacuum should it have at idle?

[bertfam]

http://www.camaros.org/forum/index.php?topic=13031.msg111010#msg111010

Ed

[bcmiller]

Good information there, and the last post in that thread was by JohnZ. 

[BillOhio]

Interesting to read that.  That was before my car was restored.  After the engine was rebuilt, I could only get 4.5 inches of vacuum out of that cam.  I took it out.   I am not sure why but I did everything I could check and x33rs helped me quite a bit on tuning it. Sounded like a drag car but it was not much fun going to a car show and backing into a spot. 

[CJP_69]

I'm around 4.5" also with a Crane Blueprint 140.

[BillOhio]

I just was out tuning the new cam.  Small solid roller from Howards.  I had 14 inches of vacuum and acts real responsive.  I have not driven it yet.  Has a nice sound to it also.  My engine builder is pretty much anti anything other than a roller cam anymore after seeing a lot of problems.