Vaccum diagram
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Junior Member
Joined: Jun 2004
Posts: 34
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From: Virginia
Car: 1989 Firebird T-Top
Engine: 350 TPI
Transmission: 700R4
Vaccum diagram
I am working on a 305 TBI to 350 TPI Swap. I was wondering if anyone has an accurate vaccum diagram for the engine, and if the MAP sensor is needed for the motor. If so, where does the MAP sensor vaccum line hook up to?? Thanks guys!!!
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iTrader: (5)
Joined: Apr 2002
Posts: 1,704
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
if youre using a '730 ecm, you need the map sensor. it is mounted on the back of the plenum, passenger side. there are also 2 vacuum ports below there, one for the map, the other for the fpr
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