Skip to content
Celebrating 250 Years of American Freedom, All Year Long! More Horsepower. More Burnouts.
Celebrating 250 Years of American Freedom. More Horsepower. More Burnouts.

Country

Availability:
Out of stock

Flowmaster 64-67 GM A-BODY 3in. American Thunder SS Crossmember-Back Exhaust System

Sold out
Original price $1,462.95
Original price $1,462.95 - Original price $1,462.95
Original price $1,462.95
Current price $1,299.95
$1,299.95 - $1,299.95
Current price $1,299.95

The American Thunder® Crossmember-Back exhaust system is a true dual large 3.00-inch muscle car system for the person who is looking for a deep aggressive sound for their high horsepower vehicle. This stainless steel system is mandrel-bent for maximum performance, includes an H-pipe crossover to balance out the exhaust pressures, add hp and torque, and to help eliminate back-rap on deceleration. The specially selected Super 40® Series performance mufflers feature a large case to handle the added horsepower and provide a deep muscular tone flowing through the large 3.00-inch tailpipes. The American Thunder systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modifications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Covered by our Lifetime Limited Warranty.

This Part Fits:

Year Make Model Submodel
1965-1967 Buick Gran Sport Base
1964-1967 Buick Skylark Base
1964-1967 Buick Special Base
1964-1967 Buick Special Deluxe
1964-1967 Buick Sportwagon Base
1966 Buick Sportwagon Custom
1964-1967 Chevrolet Chevelle 300
1965-1967 Chevrolet Chevelle 300 Deluxe
1967 Chevrolet Chevelle Concours
1964-1967 Chevrolet Chevelle Malibu
1964-1965 Chevrolet Chevelle Malibu Super Sport
1967 Chevrolet Chevelle SS 396
1966 Chevrolet Chevelle Super Sport 396
1964-1967 Chevrolet El Camino Base
1964-1967 Oldsmobile 442 Base
1964-1967 Oldsmobile Cutlass Base
1964-1967 Oldsmobile Cutlass Holiday
1967 Oldsmobile Cutlass Turnpike Cruiser
1967 Oldsmobile Cutlass Supreme Base
1964-1967 Oldsmobile F85 Base
1964-1966 Oldsmobile F85 Deluxe
1966 Oldsmobile F85 Holiday
1964-1967 Oldsmobile Vista Cruiser Base
1964-1967 Oldsmobile Vista Cruiser Custom
1964-1967 Pontiac GTO Base
1964-1967 Pontiac LeMans Base
1964-1967 Pontiac Tempest Base
1964-1965,1967 Pontiac Tempest Custom
1964-1967 Pontiac Tempest Safari

Processing & Shipping Overview

Processing occurs before shipping.

Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.

Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.

For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.



Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare