Exhaust, Pypes, 64-72 A-Body/69-72 Grand Prix, Crossmember Back w/H-Bomb/H-Pipe

1964-72 GM A-Body Exhaust System, (2.5" or 3", H-Bomb), by Pypes®

Pypes® stainless crossmember-back exhaust with selectable muffler options.

Build the exhaust around the sound and layout that suit the car with this Pypes® crossmember-back system. The 2.5" or 3" mandrel-bent tubing maintains a smooth path through the bends, while stainless steel construction helps the system withstand heat and corrosion. The H-Bomb crossover links the two sides of the exhaust for a traditional muscle-car sound. Choose the muffler option to set the exhaust’s character. Race Pro mufflers use a packed, straight-through design for strong flow and a restrained low-rpm character that becomes more pronounced under acceleration. Street Pro mufflers use a chambered design for a rich, aggressive street/strip tone. Turbo Pro mufflers use internal flow-control passages to deliver a mellow performance tone while managing resonance. Violator mufflers use a louvered internal tube and sound-deflector chambers for the most assertive sound choice in this group. The no-muffler version supplies the tubing package for a separately selected pair of mufflers. Installation hardware is included, but the front connections must match the installed exhaust. Manifold downpipes and header reducers are selected separately, and trimming may be required. Exhaust tips are sold separately. Pypes® backs the system with a limited lifetime warranty.

• Fitment: 1964-72 Chevrolet Chevelle/El Camino, Buick Skylark, Oldsmobile Cutlass and Pontiac GTO/LeMans; 1964-70 Pontiac Tempest. • Fitment: 1970-72 Chevrolet Monte Carlo. • System: crossmember-back; H-Bomb. • Tubing diameter: 2.5" or 3"; select the listed configuration. • 2.5" options: no mufflers; 14" Race Pro, Street Pro, Turbo Pro or Violator; 18" Race Pro or Turbo Pro. • 3" options: no mufflers; 14" Race Pro, Street Pro, Turbo Pro or Violator. • Construction: 16-gauge mandrel-bent stainless steel. • Material: natural-finish 409 stainless steel. • Exit: dual rear tailpipes. • Valance-exit restriction: standard tailpipes do not position 1970-71 GTO splitter tips in the valance; use the dedicated valance system. • Installation: 1968-72 Chevelle-specific tailpipe hangers (HGH11) are sold separately. • Included: system tubing, clamps and hangers; mufflers only as selected. • Not included: exhaust tips and engine-specific downpipes/header reducers. • Installation: fitting and trimming may be required. • Warranty: limited lifetime. • Valance-exit restriction: 1968-72 Oldsmobile 442 bumper-cutout outlets require the dedicated application-specific tailpipes/system.