Hey guys I just got my motor together which has a new chp 331 stroker kit, afr 165's, trickflow intake, accufab TB, custum camshaft I believe 260duration and 570 lift with the 1.7 stud mount rockers topped off with a novi 1000. My question is the engine fired up yesterday no problem and has a steady idle at 900 but the vaccumm is at 10, does this seem alittle low?
custum camshaft, low vaccum????
- Thread starter rculjak
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Michael Yount
Mustang Master
Who did your custom cam? They should've been able to predict pretty closely what the idle speed and corresponding vacuum would be. If the duration number you listed is at .006" lift, then that vacuum number is extremely low. If the duration number you listed is at .050" lift - I'd expect VERY low idle vacuum. What did you tell the designer you wanted in terms of idle speed, vacuum level at idle and bottom end drivability?
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