Question about 2003 Chevrolet Venture Passanger

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Pushrods installation Hi guys, we romoved the pushingrods and we when try to put it back I think me mixed the rods. Can you tell me if there is a specific order to put them back and apparently there is different size also so can you please help me to fix my problem. Tks. Manon

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  • md_dunn May 09, 2010

    Tks for your fast reply, another question and I hope it will be the last :) how sould I know which one are for the intake and which on are for the exaust. Tks you;ll save my life

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There are 2 different sizes and if they are mixed up, you will bend valves. Be careful. The intake valves are 5.6" long and the exhaust are 6" long. Tighten the rocker arms down and you're good to go. Let me know if you need anything else.

Posted on May 09, 2010

  • Kori Policy
    Kori Policy May 09, 2010

    Look at where the valve is in relation to the hole on either side of the head. In other words, if you're looking at the hole for the intake, follow it to the valve. This is the only way to really tell. Find your 3 intake valves per side and then install the proper pushrods. Then the rest would be exhaust.

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1 Answer

Need instructions to install pushrods and adjust them


Hi Dena,here's a Autozone link about your push rods,it says to put them in the original positions,you can read it and complete your job with this link. SAVE 20 GET 10 GIFT CARD ON ONLINE SHIP TO HOME ORDERS OF 100 OR MORE

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Forgot to mark where the pushrods go when I took them apart. Im now putting it back together. there is 2 different lengths of rods which order do they belong?


One rod will be for the inlet valve and the other for the exhaust valve turn the engine over till you get TDC and install the rods you will see which rod goes where as one rod will be too long so put it in the other lifter

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98 oldsmobile achieva front head push rod order


You are thinking too hard.

It is VERY simple. The Intake valve push rods (marked with ORANGE paint) are shorter than the exhaust valve push rods (marked with BLUE paint) If you cannot see the paint, you can always stand them up next to each other...it is pretty obvious which ones are which.

BOTH heads are EXACTLY the same - they are interchangeable. It is just that one is turned one way and the other is turned the other way so the exhaust and intake ports will be on the correct sides. (intake port towards the center of engine, exhaust port to the outboard sides of the engine.) You do not need to go searching the internet for some "order". All you have to do is LOOK AT THE HEAD to tell which valve is intake and which valve is exhaust.

So then it is as simple as: Put the short push rods on the intake and the long push rods on the exhaust....

Apr 21, 2012 | 1998 Oldsmobile Achieva

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MIXED UP PUSHRODS ON 3.8 BUICK. INTAKE AND EXHAUST LENGTHS?


push rods are the same length on a 3.8 motor but not on a 3.3 or a 3.1 motor i can`t quite remember right now.that`s why techs put the pushrods in a peice of cardboard marked which cylinder they have come from.

Nov 01, 2011 | 1998 Buick Century

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I have a 1999 Buick Century V6 3100 that I had to replace the intake gaskets due to antifreeze leaking into and out of the engine. When I had it all apart I noticed the very first lifter #2 cylinder...


If the engine oil was full of antifreeze when the intake gasket went bad, then there is a good chance that there may be some cam and/or lifter damage. A more likely cause of your problem would be that the push rods got mixed up when you put it back together. The intake and exhaust rods are different lengths. If this is the case, and you have turned the engine over, there is a good chance that you now also have a bent pushrod and intake valve. The exhaust pushrod is the longer one and if you mix them up, the piston will contact the intake valve because it will not be able to close due to the longer pushrod. This will bend or break the pushrod and bend the valve stem.

Jan 16, 2011 | 1999 Buick Century

1 Answer

I have replaced the heads on a2000 grand am Gt after having them shaved and tested and after putting the rocker arms back on the engine will not turn by hand is something misaligned


hi, i have very good experience with these engines, 3.4 litre v-6 right? these engines use two different length pushrods, long on the exhaust, short on the intake valves. there was a time when i did not know this fact(when i was just learning as a mechanic) and i swapped a couple of them. when i went to fire the engine, the valves hit the pistons on the intake side and locked up the engine, bent the rods and valves. this maybe what happened? but these engines have very close tolorance valvetrains, if you have not swapped the push rods by mistake, you speak of heads being shaved, there was one engine that i put the heads back on after being serviced by the machine shop and they had shaved too much off of the heads and the pushrods hit the pistons anyways. one more thing that happens, if coolant is left in the cylinders when the heads are put back on, or if it gets in the cylinders by accident, it will "hydro-lock" the engine. water cannot be compressed as air and atomized fuel can be. check to see if it will turn one way, but not the other at a certain point,(clockwise and counter) if it does, this may have occured. hope it is just coolant, you will only have to remove the spark plugs and crank the engine to relieve the coolant from the engine, then re-install the plugs. but if the pushrods are incorrectly installed, or the valves hit due to shaved heads, you will get to remove heads again to inspect.

Jun 25, 2010 | 2000 Pontiac Grand Am GT

1 Answer

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ok i understand what you are saying now.

the euro sport is the same as the lumina base just with a body kit, stiffer suspension, and dual exhaust.

but on the 3.1 engine the pushrods are all the same length, but depending on the stroke each cylinder is on the pushrod may be in a different position.

you are assuming that every pushrod should be in the rest state. that is not true. if the cylinder you are installing the pushrod for is on the intake stroke when you install the intake valve pushrod and tighten the rocker arm nut the valve will procede to open like it should be open for the intake stroke.

this is normal and its nothing wrong with it.

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1 Answer

Push Rods


No, it's fairly easy, just remove the valve cover, unbolt the rocker arms, remove pushrods. Make sure you have correct parts and compare length of new ones to old ones. Too long of a pushrod and you could have major damage. Slide pushrods into lifters, you can look down through the head and see the lifter. You can also feel when the rod is in the lifter correctly. Install rockers in reverse trying to put back in exact location. I recommend torqing these, you'll have to find the spec. You could spin the engine with coil unhooked so it won't fire before you put the valvecover back on to make sure they're all moving the same. Install valve cover, etc, your done.

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Fuel pump


If it is from the older GM casting there is a bolt hole that is in line with the rod. You can put a longer bolt in that hole and it will hold the rod. If it’s not there, push the rod into place. Bring the fuel pump down from the top and catch the rod with the pump lever.

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