Question about 1993 GMC Sierra K1500

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What are the timing specs for a 93 GMC 1/2 ton 350 5.7 liter truck?

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Posted on May 15, 2010

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8 degrees before top dead center


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Posted on May 01, 2010

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Posted on Jan 02, 2017

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What arm the specs for 95 camaro lt1 350


Block and Basics
Displacement: 350 cubic inches, 5733 cubic centimeters, 5.7 liters
Block Material: Cast Iron
Main Bearings: 2-Bolt Centers and Ends (The Corvette LT1/LT4 had 4-bolt mains)
Stroke: 3.48"
Bore: 4.00"
Compression Ratio: 10.4:1
Combustion Chambers: 54 cubic centimeters
Factory Redline Rating: 5700 Rotations Per Minute

Bottom End
Piston Material: (10159437) Eutectic Aluminum/Silicon Alloy
Connecting Rod Material: (10108688) Powdered Metal
Crankshaft Material: (12556307) Cast Iron

Top End and Valvetrain
Cylinder Heads: (10168448) Cast Aluminum, 2 valves per cylinder/16 valves total, ~212 CFM flow (Impala SS and Caprice heads were made of cast iron*)
Valve Diameter: (intake- 10241743, exhaust- 12550909) 1.94 intake, 1.50 exhaust
Valve Overlap: 41*
Valvesprings: (10206040) 85 lbs, seated
Camshaft Specs (12551705): 205/207 duration @ 50*, .447/.459" lift, 117 Lobe Seperation Angle
Rocker Arms: (10089648) 1.5:1 Stamped Steel
Timing Chain: (10128485) Powdered metal link

Intake and Fuel Delivery
Fuel Delivery: Electronic Fuel Injection, sequential port
Injector Size: (17124248) 3.0gps, 22lbs/hr speed density (1992-1993), 24lbs/hr mass airflow (1994-1997)
Throttle Body: 48 millimeter twin butterfly
Intake Manifold: (12552137) Aluminum

Factory Power Ratings
92-96 LT1 Corvette: 300bhp, 330lb-ft
1996 LT4 Corvette: 330bhp, 340lb-ft
1992 LT5 Corvette: 375bhp, 370lb-ft
93-95 LT5 Corvette: 405bhp, 385lb-ft
93-95 LT1 F-Body: 275bhp, 325lb-ft
96-97 LT1 F-Body: 285bhp, 325lb-ft
96-97 WS6/SS: 305bhp, 335lb-ft
93-97 Firehawks: 315bhp, 340lb-ft

Factory LTX Camshaft Specifications**:
1992 Y-body: 205/207 0.451/0.450 lift 117 LSA
1993-1995 Y-body, F-body: 202/207 0.450/0.460 lift 116 LSA
1994-1996 B-bodies (including L99 4.3L): 191/196 0.418/0.430 lift 111 LSA
1996 Y-body, 1996-1997 F-body: 200/207 0.447/0.459 lift 117 LSA
1996 Y-body, F-body LT4: 203/210 0.476/0.479 lift 115 LSA


hope this helps

Mar 04, 2015 | Cars & Trucks

1 Answer

Need spark plugs wiring diagram on a 93 gmc 350


starting with your left front its 1-3-5-7, 2-4-6-8 standing in front of truck the left front cyl is number 1, on the pasenger side of engine. remember leftside is 1-3-5-7 rightside is 2-4-6-8 an your distriberter cap has a 1 on it then just go clockwise with the numbers

Apr 10, 2012 | 1993 GMC Suburban

1 Answer

Can I put a 1994 Caprice 350 engine into a 1990 GMC 3/4 ton truck ?


yes but it will be difficult. a wiring harness swap will probably be needed since 93-94 were the experimental years for computers. you may need to swap trannys also. i advis you to have fun, the 5.7L chevy is one hell of a hot engine :) its the same one used in corvettes and comaros.

Feb 12, 2011 | 1994 Chevrolet Caprice

1 Answer

We changed spark plugs & wires on our 1991 GMC & seem to have the order wrong on the distributor cap because truck won't start. need diagram


Here is the firing order diagram for the 5.0 liter (305), 5.7 liter (350) and the 7.4 liter (454) V-8 engines (note position of locking latches/screws between the 3 and 6 and the 1 and 2 terminals on the distributor cap). Let me know if you need the 4.3 liter V-6 engine diagram (hopefully not in a 2500 series truck) or if you require any further assistance.




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Nov 28, 2010 | 1991 GMC C2500

1 Answer

1994 gmc sierra 1/2 ton 350


Replace the pickup coil in the distributor,this pulsates the injectors.

Apr 14, 2010 | 1994 GMC Sierra

2 Answers

How do u set the timing on a 93 gmc sierra 1500 350 ?


You can set the timing but the ecm, engine control module will reset it back to specs. So it useless to try. Good luck dont forget to rate

Jan 07, 2010 | 1993 GMC Sierra K1500

1 Answer

Looking for ignition switch in 93 gmc sierra


Tword the bottom of the steering colume. It will have a couple of connectors going to it and a couple of rods going to it from the igniton cylinder. IT is on top and not easy to get the bolts out of it. You will need to remove the close out pannel to even be able to see it.

Oct 20, 2009 | 1993 GMC Sierra K1500

1 Answer

No problem,just confused.


You will usually find that it is the model number.
Or maximum total weight of vehicle.
Check your drivers manual

I had a dodge ram 2500, which only had a 1/2 ton capacity.
good luck

Jan 25, 2009 | 1993 GMC Sierra K1500

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