Quote:
Originally Posted by Oldsmaniac
Actually I think you need a cross member....1974 cars and down had provisions in the cross member for an exhaust pipe to run on either side for dual exhaust. The cross member is the brace that the transmission tail is supported by. Without the older style cross member the pipes cant be run easily for duals because it is only designed for a single pipe on one side only. Ya may try junkyards, online sources or Ebay for a Cutlass cross member from 74 or earlier.
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Actually, I think only 73-74 A-body crossmembers will work. The A-body is any Cutlass, Chevelle, Grand Prix, Monte Carlo, Regal, or Century from those years. I'm not sure if GM kept the double hump crossmembers in 75-77 or not. Doesn't really make sense for them to change tooling until the model change in 78. You may want to just look under the car and see if your current transmission crossmember has one hump or two to clear the exhaust pipes before you buy anything.