408/360 question

The 390/318c.i can produce upward of 500hp with the right heads/cam/carb.The 390 will have a longer stroke due to the 4 inch crank over the 360,s 3.58 crank.I run a 408 .040 over(410ci) with ported Eddy heads,M1 intake,850dp,.631 lift solid roller cam/lifters/rockers.I first bought the Dougs headers(1 5/8)but after having head work done I bought the Hedman Husler 1 7/8 fenderwells(TTI didn,t make the 1 3/4 step hedders yet)My 66 Dart was used double duty street/strip,but decided to just use it for racing(I like my licence LOL)I,m guessing I,m in the 525-540hp range,car runs mid to high 10,s and I,m now going transbrake.Should work well with the Dana.Build the 408 you won,t regret it.JMO
View attachment 340 dyno 4.JPG