The L81 was the only 350 Corvette engine for 1981. It produced 190 hp (142 kW) and 280 ft·lbf (380 N·m) from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance. The L81 is the exact same as any ordinary 350 5.7L ci gm motor.
The L81 was used longitudinally in the Opel Omega, Cadillac Catera and transversely in the Saturn L-Series and Saab 9000. Bore and stroke were 86 mm (3.38 in) × 85 mm (3.35 in), for 2962 cc (180.75 in³) displacement. with 10:1 compression, the engine produced up to 210 hp (155 kW) and (270 N·m).
Saab's turbocharged version for Saab 9-5 (the X30) produced 200 hp (149 kW) at 5000 RPM and 229 ft·lbff (310 N·m) at 2500-4000 RPM. Saab equipped the engine with special version of Saab Direct Ignition.
This engine was used in:
* 1994 Opel Omega
* 1997-2001 Cadillac Catera
* 2000 Saturn L-Series
* 2002 Saturn VUE
* Saab 9-5
* Saab 9000
Audacity Racing wrote:Shew, that mount is scary for my tastes... as much tq and weight as that engine throws around I bet he tears mounts (unless they are solid, then he probably bends unibody)
The 3.0L makes less power and torque that a decently tuned 2.0L turbo.... and although I agree that the factory mounts may be less that perfect.... I have to think they would be fine if filled with a urethane compound.
It should be possible to manufacture a subframe to link up to the 3.0L engine mounts... which can then be attached to the factory nubira mounts (center and back )
The center mount is really only there to hold the engine weight up in the air.... the lower rear mount is the one that takes all the engine torque.
2010 BMW 335D
1994 Opel Calibra 4X4 turbo ( C20LET 2.0L Turbo )
2002 Daewoo lanos
even vs a turbo engine. If a get this engine with 200 hp stock with a couple of mods gonna be a monster. And what I can do 14 seconds in the ¼ mile stock.... that Excellent for me.
Yes it makes 200hp.... at the flywheel... so that's probably 170whp... but it's heavier and frankly your D20 tranny won't survive past 200whp.
The 2.0L 16V can make atleast 250 horsepower at the crank without internal modifications.... and given your car is designed to use the 2.0L it would be a very easy build up.
What I'm saying is that a practically stock 2.0L 16V with a moderate turbo would be significantly faster and easier to install than the 3.0L.
Even with modifications (which will be expensive) it still won't be as quick as the 2.0L turbo.
Don't get me wrong.... the car would be very fast.... but not as fast as it could be with a 2.0L turbo.
with 250 horsepower (at crank) the factory transmission is at it's limit ( as seen by existance's project )
What I'm saying is that the transmission is the weakspot on our vehicles...... with a better transmission GsiTurbo's 2.0L turbo would be able to put down 400whp or more.
The company that built his bottom end gave him warranty to 600whp..... but there is no way on earth he's going to put that down to the pavement without a mass of upgrades ( transmission, drive shafts, hubs, engine mounts, subframe upgrades, larger tires, modified fenders for wide tires..... the list goes on and on )
I've allways known that the V6 would work..... but there is no point in doing the swap unless you want to be "unique"
If the goal is to be fast without costing a hole pile then the 2.0L turbo is still the way to go.
2010 BMW 335D
1994 Opel Calibra 4X4 turbo ( C20LET 2.0L Turbo )
2002 Daewoo lanos
mocpac wrote:250hp with internal stock? than can be possible. the engine pistons and all can support that power??
One of our members with the 2.0 optra was pulling 245wtq & 230whp @ 10-12psi untill he ruined his tranny after only two months. He has all stock internals, even stock bolts.
So untill he beefs up the tranny, gets an F28 or something this is what he's running:
"Peak numbers @ 7.5 psi were: 175whp / 187wtq"
So that shows the U20SED is pretty favorable to mod. I think the owner even has a few cheap mods he could do to make more power, or at least help spool time. For example I think he's still running a crinkle bent 2.25" cat-back
