Question about 1994 Chevrolet C1500

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Bought a new driver side head for 1994 chevy 350ci need answer

It has a threaded hole above the #3 sparkplug what is it? Has 1 on each head.

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  • msfontenotsr Dec 03, 2008

    The passenger side hole has a sensor screwed in it I didn't change that head just the driver side but old head had no sensor.

  • Casey
    Casey May 11, 2010

    Are the threaded holes located in the same spot on both heads or is one in front and one in rear?

    It's possible that these are threaded holes used for attaching brackets when using a cherry picker to remove the engine from the vehicle.

  • yadayada
    yadayada May 11, 2010

    Does the old head have the hole? ask the people you bought the head from.


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It may be for the dipstick tube bracket. some heads fit many applications

Posted on Dec 03, 2008

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2 Answers

How do i replace spark plug

Without more information, like make and model, I'll have to give you a generic answer:
1. Unplug the plug wire from the plug
2. Place a plug socket over the plug
3. Use a socket driver to un-screw the sparkplug
To reinstall:
1. set the new plug's gap to the manufactures recommendation.
2. Lubricate the threads of the new plug with lithium anti-sieze grease (lightly, an amount the size of a grain of rice is plenty)
3. Hand-thread the new plug in as far as you can hand-turn it.
4. Put the socket wrench on it, tighten no more than 1/2 to 3/4 turn after the gasket contacts the head.
5. Replace the wire on the plug's top.

On some cars, the space to get to the plugs is very limited. I've changed plugs where the plugs were between the exhaust pipes, or behind the alternator.

Jan 17, 2015 | Cars & Trucks

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Show diagram for sparkplug wiring on 1996 chevy 3500 454 engine

1-8-4-3-6-5-7-2 GM motors are numbered on the driver side as 1-3-5-7 and on the passenger side as 2-4-6-8. These numbered cylinder go from the front of the motor toward the back. Hope this helps.

Mar 08, 2013 | Chevrolet 3500 Cars & Trucks

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Can you reuse the head bolts on a 92 chevy pickup with a 350ci engine

NO you don't..they are not "torque to yield" bolts. Just make sure the threads are real clean on the bolts and the block.

Jul 12, 2011 | Chevrolet Silverado 1500 Cars & Trucks

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I'm trying to find top dead center on my small block chevy

Take out the No. 1 sparkplug, turn the crank by hand, watch for the timing mark to come up and when it is close insert screwdriver or similar into cylindar and feel the piston come up. TDC should be at the top of the stroke and match the timing mark. Should remember but don't, No. 1 is drivers side ?? Looking straight down at the motor, it is the one farther foward.

Two major things wrong with this answer: First: NEVER insert a screwdriver into the spark plug hole to find TDC. You can nick or scratch the top of the piston head, which will cause hot spots which in time will crack the piston head which in time will mean you will be paying for a major engine rebuild! Instead, use a plastic (not wire, not wood) coat-hanger cut along it's longest length. Second: You need to know more than just where TDC is for most applications. What most people really need to know is where is TDC on the COMPRESSION stroke. (The stroke where the spark plug fires, rather then the exhaust stroke where the piston pushes the waste gasses out of the combustion chamber at TDC). You do this by putting your thumb against the hole where spark plug # 1 goes. Then rotate the engine by hand (ALWAYS clockwise if you are standing in front of the vehicle, facing it) and wait until you feel a large puff of air escaping. THAT is TDC on the compression stroke. Pull off your Distributor Cap and look at where the rotor is pointing. It should be pointing to Cylinder #1. If not, you either mistook the small puff of air that happens on the exhaust stroke for the big puff of air that happens on compression, OR, your distributor is not seated right in the engine.
BTW: Cylinder #1 on a Chevy 350 V8 is on the front left (meaning driver's side of the engine closest to the front of the vehicle.)
Good Luck!

Nov 20, 2010 | 1984 Pontiac Grand Prix

1 Answer

How do I get the spark plugs out of my 1998 ford escort to replace with new ones? Also where does the pcp Valve go?

With you hood open and you are standing in front of the car sparkplug wires need to be removed,i suggest you remove them one at a time, under each wire the sparkplug is threaded into the cylinder head,using a 5/8 sparkplug socket remove the sparkplug and replace it with new properly gapped sparkplug.Note:if you remove all sparkplug wires at once the factory wires are generally numbered 1 2 3 4 the sparkplug closesed to the passenger fender is #1 and the one clossesed to the driver's fender is #4.Standing in front of vehicle the PCV Valve is located between #3 and #4 on the backside(intake side) of the engine fitted down into a rubber hose

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1 Answer

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It is best to torque the head down in steps. First round is at 25lbs, second at 45, third at 110 except for bolt #11 which is at 100lbs. Sequence is in a spiral, #1 is the one on the opposite side of the head at the center if you are standing on the left side of the engine (intake side). Next is the one closest to you below #1, #3 is the one just to the left of that one,#4 is the one above it. #5 is the first to the right of #1, #6 is just below it, #7 is to the left of#3...get the idea? 11is the one at the left bottom corner of the head (that's the one that only gets torqued to 100.) It's always good practice to run a tap of the proper thread size into each bolt hole on the block and to use thread sealer on the bolt threads to prevent coolant seepage past the threads into the oil.
Always make sure that both the block deck and head mating surface are 100% clean and free of any gasket material or residue.
Good Luck!!

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1 Answer

Im replacing the head gasket on my 94 GS300 and need to know the torque specs for the head bolts

step # 1 tighten 25 ft lbs,
step# 2 tighten 90%
step # 3 tighten another 90%
note do in sequence start closest to belt one head at a time start at the bottom 1 then to the top all the way to the other side is 2 then back to other side on top now is 3 then back to other side bottom is 4 keep do this working your way to the center do this with each step thats the sequence. hope this helps. note thses are strech bolts use new ones dont reuse old ones, put a little oil on threads. good luck.

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try these , maybe its the same directions .1.) turn key off . 2.) use a fused wire , maybe your new remote came with a short wire , under your driver side dash is a connector that looks like this >
push 1 end of the wire into the A hole , and the other end into the G hole , the door locks should lock and unlock , 3.) press the unlock button on the new remote , the door locks should lock and unlock . 4.) repeat this procedure if you have another remote you want to register . 5.) now disconnect that jumper wire , and test the functionality of your remote(s) . see what that does for ya .


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Oct 20, 2008 | 1989 Chevrolet C1500

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