After years of driving Boss 302s with their huge ports and people telling me that I had no low end torque in my 3200# car, I have to laugh every time I read something like this. If you romp on it in a Boss 302 at 1500 rpm is it going to bark and go? Of course it’s not. But if you hang a down shift and romp on it it's going to scream! I was going to make the point that there are allot of guys out there with those non-street-performing Yates heads as well…
……… That is, until I looked at John's set up.
And they seem to be doing fine.
The point is (and this is JMHO) saying that the heads have too much flow or have ports that are way to large, is like saying you want a tractor motor in your Cobra. And after looking at Brent’s build up in another thread using twisted wedge heads I have to assume that this is not the case for him either! So we get right back to “willing to put up with.” as the defining case for what is acceptable and not acceptable in a street engine. I’m sure that with a set of FMS in-line valve heads on either John or Brent’s engine they would still perform fine on the road and have excellent street manners. But then that’s not what the majority of use are looking for with these cars is it?
I’m in somewhat of a quandary myself as I’ll be shoe-horning an FE 428 into my BDR; this after years of high winding small blocks
. I’ve only ridden in one big block Cobra and that was a real 427 street car almost 15 years ago. I do remember the thrust and the odd sensation of having to shift at 6k though! This should be interesting.
Steve