A larger cam should let it RPM higher but the torque should be there in current form and with that crankshaft with 3.73 gears and extra low first in the trans 2600 stall .. it should be impressive at some point..
basics...check for full throttle maybe secondary vac spring is a black RV spring jetting all kinds of things
i have a 462 slightly larger solid cam 6X-8 heads th400 2.73 gears that pulled a 13.6 at 5800 DA .. so somethig is amiss if your description is accurate
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Last edited by Formulas; 01-17-2024 at 05:17 PM.
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