Re: 454 Exhaust manifolds
I personally don't like PDQ's fix. If you use a 1-bolt mount, you are offsetting the tail of the transmission 3/4" in what direction ? Remember the STOCK set up is 1/2" to the passenger side and 3/4" forward. For Maximum performance, (no vibrations etc.) the transmission output shaft must be parallel with the pinion shaft of the rear axle. Also will stock headers fit ? Remember that 1/4" movement of your transmission tail shaft, can make headers fit or not fit, near the steering box etc. Will the 1 bolt trick work ? Maybe and maybe not.
69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 transmission, 12-bolt w/Eaton 4.11:1