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Now Here’s a Big Block: GM’s 637 Cubic-Inch V8 | Mac's Motor City Garage
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Now Here’s a Big Block: GM’s 637 Cubic-Inch V8 | Mac's Motor City Garage
GMC Vs. Chevrolet Trucks
Now Here’s a Big Block: GM’s 637 Cubic-Inch V8 | Mac's Motor City Garage
A Look Back at the 702ci GMC Twin-Six V12 Engine
Now Here’s a Big Block: GM’s 637 Cubic-Inch V8 | Mac's Motor City Garage
