Quote:

not sure if this is where i ask this question but here we go. guys i was wondering what is all envlved in building a 451 from a 400 besides the grinding of the 440 cranks mains. is there block or cylinder notching involved? pics an all the technical specs would be greatly apreciated. an what kind of power are these capable of?



You need to cut down the counter weights a good .120" to clear, no block prep needed, There is good power to be had in a 451 lowdeck, mine was a very simple build with FTs, XE284H, headers, M1 single, 750dp, 4.10 gears & 4400 stall, in my 75 Duster it pulled off a 10.91 shifting at 5600, race weight was just below 3100 lbs., weight is your worsed enemy, so keep the car light & you'll be happy.

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU