Well guys I'm now the proud owner of a 92 Chevy Cheyenne wt1500. She runs good tomorrow I'm doing a tune up and oil change and a new thermostat the gasket leaks a little bit. Runs good and was very surprised by the 4.3power. Pretty happy so far . Anyone have any suggestions or comments lets me know. Thanks guys
bought me a new truck
- Thread starter Dakota1820
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Pics? I'd be surprised if it's not beat up since it's a 92 1500 W/T.
A 1992 should be super simple distributor cap equipped, throttle body fuel injected, no EGR, but probably will have (or had) a belt driven air pump to blow air into the exhaust manifolds.
Rusted out and/or cracked exhaust manifolds are common. I remember that happening to my dad's 1990 1500 W/T.
Is this an automatic? If so it will be the 4L60E I believe.
Joel
ls1mike
$50 Site Donor 2023
Buy a new thermostat housing. They warp. They are cheap and it is good insurance. I had a 4.3 in an S-10. It was a 91. Should be the same as your 92. I put 270,000 miles on it, most of those were trouble free.
Its an auto 700r4 and the truck has rust on rear fenders but not bad. But the area under the drivers door is rusted up . Overall it's not bad for the age. How do I upload pics? I will if someone can tell me how
Thanks ls1 Mike will do.
Originally Posted By: chevyboy14
Its an auto 700r4 and the truck has rust on rear fenders but not bad. But the area under the drivers door is rusted up . Overall it's not bad for the age. How do I upload pics? I will if someone can tell me how
Thought I had a few pics on my phone but I didn't save them tomorrow morning ill take some and post them
Shouldn't a 1992 4.3 have the Vortec engine or was that only on the S-10?
OVERKILL
$100 Site Donor 2021
Originally Posted By: cchase
Shouldn't a 1992 4.3 have the Vortec engine or was that only on the S-10?
Originally Posted By: Wikipedia
229 cu in (3.75 L) 90-degree V6s in passenger cars. The 4300 is based on the 350 cu in (5.7 L) Chevrolet small-block V8, and first appeared in 1985 with the throttle-body injected LB4 in passenger cars; light trucks and vans used Quadrajet carburetors for 1985. In 1991, the limited-edition GMC Syclone featured a 280 hp (209 kW) and 350 lb·ft (475 N·m) turbocharged and intercooled LB4 with the first use of multi-point fuel injection on a Vortec V6. The central-port injected L35 (Vin 'W') debuted in 1992; the cylinder block was slightly changed, a balance shaft was added to remove minor vibrations, and better breathing yielded 200 hp (149 kW) . Another CPI engine, the LF6, joined in 1996 with the introduction of Vortec cylinder heads, while the LB4 was retired after 1998. In 2002, GM introduced a new multi-point injected LU3 engine, and a LG3 variant appeared soon after. This engine's origins date back to 1955, when the original Chevy small-block V-8 was introduced.
All Vortec 4300s use a cast iron block and heads with a 4 in (101.60 mm) bore and 3.48 in (88.39 mm) stroke, both of which are the same as a 350, which gives them a displacement of 262.39 cubic inches (4,299.8 cc). Connecting rods still measure 5.7 in (144.78 mm) although the rod journal diameter is 2.25 in (57.15 mm). 1992 and later cylinder blocks used a different timing cover since these engines used a balance shaft (some 1992 production cylinder blocks for the LB4 with TBI induction used the 'traditional' front timing chain cover from the small block Chevrolet). This change created a situation where most aftermarket timing chain alternatives do not fit. This is true of gear drives and double roller chains. They are pushrod (center camshaft) engines with two valves per cylinder and are produced in Tonawanda, New York and Romulus, Michigan. Power output of the new LU3/LG3 engines is 200 hp (149 kW) to 215 hp (160 kW) and 250 lb·ft (339 N·m) to 265 lb·ft (359 N·m).
4300 applications:
1985–2005 Chevrolet Astro/GMC Safari
1991–1993 GMC Syclone/GMC Typhoon (See LB4 below)
1988–1995 Chevrolet Blazer/GMC Jimmy
2001–2002 Chevrolet Express/GMC Savana
1988–2003 Chevrolet S-10/GMC S-15
1994–2001 Oldsmobile Bravada
1985–2001 Chevrolet C/K
Toyota Forklifts 7000 lb Capacity and up
LU3 applications:
Chevrolet Astro/GMC Safari (base models)
Chevrolet S10 Blazer / GMC S15 Jimmy
Chevrolet Express/GMC Savana (base models)
Chevrolet S-10/GMC Sonoma
Chevrolet Silverado/GMC Sierra (base models)
GMC Envoy
Isuzu Hombre (optional)
Oldsmobile Bravada (base model)
So it sounds like it should be Vortec and not TBI...
OVERKILL
$100 Site Donor 2021
According to Edmunds:
http://www.edmunds.com/chevrolet/ck-1500-series/1992/features-specs.html
It is Vortec AND TBI from the sounds of things. 
Quote:
Performance
Base engine type: gas
Horsepower: 160 hp @ 4000 rpm
Torque: 235 ft-lbs. @ 2400 rpm
Originally Posted By: OVERK1LL
According to Edmunds:
http://www.edmunds.com/chevrolet/ck-1500-series/1992/features-specs.html
It is Vortec AND TBI from the sounds of things.
Quote:
Performance
Base engine type: gas
Horsepower: 160 hp @ 4000 rpm
Torque: 235 ft-lbs. @ 2400 rpm
OVERKILL
$100 Site Donor 2021
Originally Posted By: cchase
Originally Posted By: OVERK1LL
According to Edmunds:
http://www.edmunds.com/chevrolet/ck-1500-series/1992/features-specs.html
It is Vortec AND TBI from the sounds of things.
Quote:
Performance
Base engine type: gas
Horsepower: 160 hp @ 4000 rpm
Torque: 235 ft-lbs. @ 2400 rpm
Quote:
All Vortec 4300s use a cast iron block and heads with a 4 in (101.60 mm) bore and 3.48 in (88.39 mm) stroke, both of which are the same as a 350, which gives them a displacement of 262.39 cubic inches (4,299.8 cc). Connecting rods still measure 5.7 in (144.78 mm) although the rod journal diameter is 2.25 in (57.15 mm). 1992 and later cylinder blocks used a different timing cover since these engines used a balance shaft (some 1992 production cylinder blocks for the LB4 with TBI induction used the 'traditional' front timing chain cover from the small block Chevrolet).
I know my 1994 W/T 4.3L was TBI. My 1998 was MPI.
Joel
The tbi is also a vortec in 92. I did a tune up and oil change. And she's. Needs a motor mount but other than that its all good
Between my dad and myself, we've had five of these 4.3 Vortec engines in Chevy pickups starting with an '86. All have been excellent.
The '98 has a tendency to get condensation under the distributor cap when it sits outside, but that's the only anomaly. Of course, Chevrolet made it nice and easy to get at by mounting it at the rear of the engine.
We've had the best results with 5W-30. I'm not sure I would have a brand preference for this engine, but have had good results with Valvoline conventional, synthetic, and now Mobil 1.
<img src="http://i.imgur.com/PMC60.jpg" alt="" title="Hosted by imgur.com" />
If it were mine, I might get the grill and bumper painted.
The downside would be that you would get rock chips but it would have a nice monochrome look.- Status
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