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350 JR Exhaust Manifolds

Thornton's 350 JR Exhaust Manifolds Brand New, Custom Design! Here is a high performance exhaust manifold that GM never produced. We have produced what everybody was asking for. This is the high performance solution instead of headers.  Features: Large 2 1/4" outlet on the driver side man more »

Zinc Valve Covers

 Brand New factory correct notched valve covers for the 1967-1972 Oldsmobile big block 442. With correct baffle design and factory spot welds. ZINC valve covers are plated for corrosion resistance. These valve covers were reproduced for high quality restored 442 that demand the best. No need to more »

vacuum motor

Vaccum Motor This is a factory replacement with the correct anodized finish.Replace your old, worn original motor with this show quality replacement.When your original vacuum motor fails because of diaphragm deterioration be sure to replace it with a quality with our quality motor. A must more »

OAI rivet and spring clip set

Rivet and Spring Clip Set This is the retainer and spring clip that attaches the ram air breather motor to OAI flapper door.Replaces bolt or pins you may be using with the correct details for your classic car. Pin and Clip Set- $8.00 more »

shifter balls

Shifter Knob without shifter pattern- $28.95.Reproduced to the correct size, texture (grain)and color of the original.  Shifter Knob with shifter pattern- $28.95.Reproduced to the correct size, texture (grain)and color of the original.   more »


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    • THORNTON MUSCLE CARS
      832 Mine Road
      Quakertown, PA 18951

      610-282-2494
      610-282-2484
      800-495-0442
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