does anyone have any info. on the 12 port head showen by "opalacoupe88" on 9/23/05 posted under hi performance, seems to be from brazil for a 1985 model with efi.

To follow up on the post above, I'm looking for the part number,model,year of,etc. of a "GM-Brazil" mfg. head for 250 efi chevy omega it's a brazilian head designed by Lotus, the casting number is 93216528. does anyone know how to track down this GM casting number?

This cylinder head was part of the nice update done by General Motors of Brazil on the GM250 engine, turning it to the Chevrolet 4.1 MPFI for the Chevrolet Omega back in 1995. Besides this nice iron 12-port head, the engine received a one-piece rear crank seal, 6" rods, lighter/shorter pistons, Bosch Motronic 2.8.1 Sequential Fuel Injection, among other goodies. I still have one of these engines stored in Brazil and I miss it badly…

Should point that this head does not flow all that much (unported), but its redesigned combustion chamber (along with the thickest deck surface) makes it well worth it, specially for sequencial fuel injection straight-sixes…