Mine originally had a 3.8 (231) and had the 200 Metric trans with lock up converter. It could be one of those gear ratio's, but seems a little steeper than that. My plan is an 8.5 with 3.55 gears. With the 275-60-15's I've got on the back of it now should offset some of the increase in the gearing and I like it better with the Turbo 350 that I have in it right now behind the 350 than I did the 2004R. Once I get a carb set up for it this thing should be a bout as quick as my GTO.
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1971 GTO,72 400, stock bottom end, 670 heads, Lunati BMII cam, headers, iron intake Q-jet, four speed. Best 60 ft 1.806in 2004. Best 1/8th mile e.t. 8.46 with 3.55 open rear
85 Grand Prix, 70 400, casting 62 heads stock rebuild, Turbo 350 trans 78 800 cfm Q-jet modified as per Cliff Ruggles book.
87 F350 6.9 4 speed dually
A poor man has poor ways.
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