BBK Performance 40060 User Manual
BBK Performance For the car
INS 116
1996-2004 GM 5.0/5.7/4.8/5.3/6.0L
Full Size Truck Headers
Part#s 4005/0,4006/0,4007/0
Step 1
Disconnect the negative battery terminal and allow the engine to cool.
Step 2
From beneath, remove the nuts that attach the Y-pipe to the factory exhaust
manifolds.
Step 3
Unbolt and remove the factory exhaust manifolds and the stock gaskets.
Step 4
Clean any old gasket material off of the cylinder head. Use a scraper if necessary.
Step 5
Using the factory stock hardware and the supplied gaskets install the BBK headers.
Step 6
Using the factory stock hardware and the supplied gaskets, attach the Y-pipe to the
BBK headers.
Step 7
Using the supplied hardware, gaskets, and block-offs connect the EGR and AIR
fittings to the BBK headers where applicable
Step 8
After driving the vehicle and allowing it to cool a few times, go back and retighten the
header bolts.