twin turbo 331 ????

[PKRWUD]

Originally posted by 89 Cobra LX
Good stuff Chris. How much boost do you think the stock bottom end can handle? Or what do you recomend?

No more than 6 pounds. Keep in mind I mean a real 6 pounds, not the numbers the cheap boost gauges, like the turbo t-bird factory gauge, allow you to think you're reaching. Put it this way, above 6 pounds with stock pistons will require at least 95+ octane, and should run on 100. Past 6 pounds is the point where I won't do the work unless the customer follows my recomendations, which include new, lower compression blower designed forged aluminum pistons, and a tighter bore. I also insist on a better flowing fuel system, from the pump to the injectors, as well as a boost retard ignition box.

6 pounds of boost, at sea level, creates 430 cubic inches of displacement in a 302. If they want more than that, they're going to do it my way, or have someone else do it.

Take care,
-Chris