PerTronix JBA Exhaust 6656S - Manual (Page 3)

Things you will need:
• Floor jack
•Jack stands with large bases
•WD40 or equivalent penetrating oil
•Set of wrenches
•Socket set, ratchet and extensions
•Hack saw
•Screw drivers
•Two wood blocks 2x2x3 (2x4 cut)
NOTE: Typically the exhaust pipes in these early vehicles are long gone. These instructions
contemplate the removal of old components and the installation of a new exhaust system by a
competent exhaust shop. Thus if you are replacing conventional headers (which typically exit
under the belly near the transmission) with the JBA Tri-Y’s, and your exhaust pipes are in good
shape, the modifications to be performed by an exhaust shop will be relatively minor. These
instructions cover only the installation of the JBA headers. JBA offers a matching 2 1/2”H-pipe
and 2 1/2” exhaust system for the headers.
H-pipe Part No. 6654H
Exhaust System Part No. 50-2650
1. Place vehicle in a location where the floor is solid and flat, with adequate lighting. Do not
attempt to work on a hot engine. Heat causes metal to expand and makes removal of
fasteners difficult at best. Disconnect the battery cables from the battery. Raise the front
of the vehicle up on to the jack stands to obtain adequate access to the bottom exhaust
flanges. Use large-base jack stands to support the vehicle. Do not rely on the jack!
Block the tires to prevent the vehicle from rolling off the jack stands.
2. Disconnect the spark plug wires by grasping and gently twisting the spark plug wire
boots. Do not pull on the wires! Brush or blow any debris, which may have collected
around the manifolds or spark plugs. This will help prevent foreign matter from entering
the combustion chamber when the manifolds are removed. Spray WD-40 or some type of
penetrating oil on all accessible fasteners and fittings before attempting to remove them.
3. From under the vehicle, unbolt the head pipes from the exhaust manifold and the exhaust
system. Then remove the head pipe.