[rfmaster]

Nice find.

The EFI engine probably has many more miles left in it if the oil was changed on regular basis. THM400 is nearly bullet proof as long as trany fluid is kept clean and cool (below 180F). Drop the pan check the sludge for metal flakes and derbies. Before driving go through the fuel system. Drop tanks, replace fuel pumps with AC Delco EP-241 or EP-381. Also do not forget to replace FP to feed through hose with fuel submersible rated hose - SAE 30R10. Naturally Fuel Filter.

The OE BBC camshaft was optimized for low end torque and basically chokes engine off above 4000 RPM. There are modern camshafts that TBI system compatible that can give you a bit more torque and HP while maintaining excellent street manners. A new camshaft will need a bump in fuel pressure from 9 - 13 PSI to 15 - 18 PSI. This small increase will easily support higher engine output without upsetting ECM. This easily done with a stiffer FPR spring.

//RF