pure_insanity, on 17 February 2011 - 11:15 AM, said:
how similar is this motor to the original gnx motor? is it even the sdame or just a later model/version of the same motor. i may be thinking wrong here but it seems to me like this motor has the plastic intake, if so go ahead and give it a new set of intake gaskets. i think this was in the early years of dex cool when it was eating up the intake gaskets. not hard to do and not much money either. whole lots easier to do with the motor out of the car.
otherwise, i think its a pretty cool swap. glad to see your getting back to the gullwing car.
Its actually not the same as the GN motor at all, the good news is that its the next generation and actually been improved in several areas.
A 3800 Series II L67 Supercharged engine in a 1998 Buick Regal GS.The L67 is the supercharged version of the Series II L36 and appeared in 1996, one year after the normally-aspirated version. It uses the Eaton Generation III M90 supercharger with a 3.8" pulley, a different throttle body, fuel injectors, cylinder heads, and lower intake manifold than the L36 uses. Both engines share the same engine blocks, but compression is reduced from 9.4:1 in the L36 to 8.5:1 for the L67. Power is up to 240 hp (180 kW) and 280 lb·ft (380 N·m) of torque. Final drive ratios are reduced in most applications, for better fuel economy and more use of the engine's torque in the low range. The engine was built in Flint, Michigan. The engine was certified LEV in 2001.
This engine is or was used in the following cars:
19962005 Buick Park Avenue Ultra
1997.52004 Buick Regal GS / GSX (SLP)
19961999 Buick Riviera (optional 1996-97, std. 1998-99)
20042005 Chevrolet Impala SS
20042005 Chevrolet Monte Carlo SS Supercharged/Intimidator SS
19961999 Oldsmobile Eighty-Eight LSS (limited)
19962003 Pontiac Bonneville SSEi
19972003 Pontiac Grand Prix GTP
The NA version uses the plastic mainfold, This one has a aluminum lower plenum that the SC mounts to, Also the heads are slightly different and the injector boss is in the head. So to make a Turbo Version A sheet metal intake is all thats required.
But since you mention it i may swap the intake gasket on my sons while the motor is out!