What does your 305 tbi/tpi engine pull for vacuum at idle WITH A STOCK CAM?
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From: Charles County, Maryland
Car: 2000 BMW M5
What does your 305 tbi/tpi engine pull for vacuum at idle WITH A STOCK CAM?
What does your 305 tbi/tpi engine pull for vacuum at idle WITH A STOCK CAM? I am trouble shooting whether or not I have an intake leak on a 305 tpi long block w/ a carb on top. I have around 18" vac idling in neutral, does this sound good or low?
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From: Alberta, Canada
Car: 80 GMC K35
Engine: TPI 355
Transmission: NV4500
Axle/Gears: 4.10
18" is a very strong vac signal! If it is steady, and the needle doesn't bounce around at all, then you've got nothing to worrry about. The most I ever managed to pull out of my old 3/4 ton with a stock cam was 19.5" of steady vaccum at 800 rpm in park.
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