I figured out that the '74 400 flywheel/flexplate doesn't have the holes for the 200-4R torque converter. Only the bigger diameter for a TH400. But noticed a '77 400 flexplate has holes to fit both trannys. So guess what I'm going to be doing. I cleaned up the Edelbrock Performer and just got a kit for the '77 Trans Am Quadra-Jet I am using for this car.
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