ran the Duster today.....

'76 Duster, 2.45 gears, P235/60r15 tires, stock 904 and stock converter, stock exhaust manifolds with duals, stock low compression 360 long block (yes, stock heads) that I added a 4bbl (600 eddy/Action plus intake) and .427/.454 lift cam 204*@.050. (less than a stock 340 cam). I was impressed. It did better than I thought it would.

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not bad at all!