Not to be a fanboi of other folks cars or speak for them, but (in addition to crizila's big 300) a good car that defies logic is qwkmopardan's 4100lb 1979 300.

He is running a single plane intake and a big cam in a very heavy car street car.
- Victor 340 intake on his pump-gas 408 with a 262 @.050 flat tappet cam.
- Runs 11.60's.
- Ported junkyard 587 iron heads, too...

Quote:

qwkmopardan
This one is a 408 with similar heads as the Demon but car weighs Over 4100lbs and has a full exh with 4 mufflers. Cam has only .527 lift and 262 at .050. It has near 15000 miles on it now and still going strong. Best 1/4 mile pass on this car is 11.600 at 116mph. ... cars have nicely ported Victor 340 intakes. The "300" has a 9" J converter




Although most folks would initially recommend a RPM Air Gap and a much smaller cam profile for this plus-sized car.
...Dan sure seems to run just dandy with the victor 340 and healthy cam, though.