sorry, can't help you out..
i thought this thread was going to be about the supercharged 427 they are putting in the new ZR1 Corvette.

 

LS9
Reports indicate that a 6.2 L (376 in³) LS9 is due in 2008. Displacement is the same as the 6.2 L LS3; the LS7 was not used due to the higher cylinder pressures created by the supercharger requiring the thicker cylinder walls of the LS3. Cylinder dimensions are now 4.06 in (103.25 mm) bore with a 3.62 in (92 mm) stroke. It is equipped with an Eaton four-lobe Roots type supercharger and is stated to produce at least 620 hp (463 kW).

ZQ3, L46, LT-1, L48, L82, L81, L83, L98, LM1, L05, L31 are Gen1 350s. As you see the LS9 isn't out yet and it's for Corvettes.

 

LS9 is the basic GM crate 350:

http://paceperformance.com/index.asp?PageAction=VIEWPROD&ProdID=154038


As you can see it actually is called the LS9-L or L LS9 here:

http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-6.php

Another link to it being referred to as the LS9:

http://www.who-sells-it.com/cy/gm-g...m/cy/gm-goodwrench-658/gm-goodwrench-engines-catalog-252/page-116-fullsize.html

 

So it's a crate motor and not a stock 1985 truck motor?

350 Cubic inches 4.00" Bore, 3.47" stroke
8.5:1 compression ratio.
250 HP @4300 rpm
350 ft. lbs of torque @ 3600 rpm
( These Numbers obtained with a Quadrajet Carb,1 5/8" headers , and an Edelbrock Performer intake part # 2101)
Engine consists of the following parts:
Block -part # 10066034, casting # 10066036
2 piece rear main seal 4 bolt main
Crankshaft- part # 3932444
Nodular Iron 1985 and older flywheel bolt pattern.
Powdered Metal Connecting rods- Part # 10108688
Cast Aluminum Pistons- part#12514101
G.M. High Volume Pump Oil Pump- part # 12555284
Hydralic Flat tappet Camshaft- Part#3863151
Intake Lift-.383" Exhaust Lift-.401"
Intake Duration @ .050"- 194 Exhaust Duration @.050"- 202
Lobe Seperation-112
This cam Has a mechanical Fuel Pump Lobe.
This is a low end Torque oriented camshaft.
Cylinder Heads- part # 14034808, casting #33417369, 1.94" Intake valve, 1.50" Exhaust Valve, 76cc Combustion Chamber, 7 Bolt style Exhaust Flange Standard, 85' and prior intake manifold bolt pattern. Perimeter bolt style Valve Covers. This head is very similar to the old #882 castings from the 1970's

 

No it was available in the pickup. The crate motor is the replacement. The last link shows the RPO code for it. In 1979 it was a whopping 165hp :wacko: