My car with a factory block 454 with aluminum heads weighed 2820 with NO DRIVER and 4 gallon of fuel.It also had manual drumb brakes on the front at that time.
Now it has the 540 with a MerlinIII block , which I'm sure is heavier..but I put light weight brakes up front..so I'm not sure how much heavier it is now vs then...I am 220lbs so that was 3040 with the old motor..so I am gona guestimate 3100lbs or so...but the 2820 was actual weight on scale not guestimate.
I have only made two passes with this motor combination...First pass was only a partial..my electric shifter took a dump( car was flooded as in river water back in June submerging all the electrical stuff) and I had to shift manually( gasp).. Well I forgot to shift....
ops: it hit the chip so I let off.
Second pass I shifted it...can't tell ya what rpm though...
It went a 6.10 @ 110 in the eighth and the 60' was 1.31 I am confident it will go in the 5.85-5.9x range easily. I think the mph was low because I have not done anything with the carb jetting and such.I also got out of it a bit early...I let up at the 1st marker cone at the end which is the first of 2 mph beams I am told...doubt it makes much difference.