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Message: <blockquote data-quote="jeffs98cobra" data-source="post: 560753" data-attributes="member: 10567"><p>I need a little help. I just put an MMR 5.0 Stroker shortblock in my 98 Cobra. They also did their Stage 2 port and polish job on my B heads. I installed Comp stage 3 blower cams though the car is not supercharged yet(gotta reload the wallet). The motor has 18cc dish pistons so it should put the compression at around 9 to 1. My big problem is that i am only running at about 5-6 inches of vacuum at idle. The car idles ok when it is cold, but dies when at idle when it warms up. I have sprayed 2 cans of carb cleaner trying to see if I can find any vacuum leaks with no luck. Any help or suggestions would be MUCH appeciated. :dontknow:</p></blockquote><p></p>