GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Crossover Pipe

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REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4

Place safety glasses over your eyes. The crossover pipe is typically connected to the manifolds by flanged connections or collars. In some cases, bolts that are unthreaded for part of their length are used in conjunction with springs. Make sure you install the springs and that they are in good mechanical condition (no broken coils) when installing the new pipe. Replace ring type seals, also.



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Fig. Fig. 1: Crossover pipe connections at the exhaust manifolds; all models similar



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Fig. Fig. 2: A common crossover pipe used on V6 and V8 engines



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Fig. Fig. 3: Removing the crossover pipe attaching bolts



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Fig. Fig. 4: Removing the crossover pipe from the vehicle

 
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