ok i got a cam out of my 406 it a crane cam h-244 duration @.05 is 244 intake and 252 exhaust lift is 516 intake and 525 exhaust it did real good in the 406 485fwhp and 545fwtq but my guestion is do you think it will make more then 400 rwhp in a 355 with a 10 to 1 cr and the heads are aluminum with 202 intake and 160 exhaust. runners are 200 cc intake is a rpm air gap with a 750 carb.

 

I am assuming the 406 was a 400ci smallblock bored over, correct? Same size valves? If so, I think you should be hitting over 400hp. Not the same as the 406, because of the loss of cubes, but lemme run a check in DD and see what I come up with.


EDIT: Ran the numbers in DD, and found the exact specs for your cam. Give me the heads that you have so I can get a perfect match up here. I just plugged in Brodix IK200's because they fit your head description.



Seems that you will hit 381hp at peak, but that torque curve is not much to be desired. Like I said, and I'm sure you know this, Desktop Dyno isn't the most accurate program in the world, but with the estimates I've seen compared to real life combinations, it's damn close. Again, get me the brand of heads you have and I can get a more accurate reading.


Yeah, I wasn't sure if it was a Big Block the cam was in before or a Smallblock, but then I realized that the common CI for a 396 big block that is bored over is a 402, not a 406, and a 400 SB bored over is a 406, so thats what that was all about.

 

Itll be a nasty cam in the 355...should be a little over 400 at the wheels with an automatic car.

It will sounds nastier in this motor than it did the 406 b/c of the cubic inch loss.

 

sorry i dont know what heads thay are i just know that thay where made for a round track car i did check the heads to see what the intake runners where and thay heald 200 cc of water and the valve are 202 and 160 thats all i no