Where do i hook TH 400 trany vac line on 2004 chevy silverado 6.0 engine swap on my 79 FJ -40.
TH 400 vacuum line for 2004 chevy 6.0 ls motor swap
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The vacuum modulator is supposed to be plumbed to constant vacuum. What vehicle it’s in or what engine it’s bolted to doesn’t matter. Hook it somewhere on the intake.