by Richie O » Tue Mar 29, 2011 7:20 pm
Check for sure, but I think the enty level Super B Special is a 62/71/14. You can also go with a 64mm and a 66mm wheel, but I would not go above the 62 model. I would also go with the 14cm (.80 ar ) housing. If you keep your timing on the stockish side, spool should be pretty good. The more you advance the timing, the slower the spool.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k