LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What is the piston order for TDC

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Old Mar 9, 2012 | 10:52 AM
  #1  
greenformula94's Avatar
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What is the piston order for TDC

Trying to find my TDC right now.

Is the #1 piston the left or right side piston when looking from the front?

I have the service manuals and it doesnt really explain TDC to you because they expect you to have the gears marked, which mine are not.

I think its the right side first piston. If its all the way to the top, I also understand there are two strokes, and i want to be on the compression stroke.

I I need to put my Crank sprocket on at TDC.

I have the heads off, so i have a clear visual of the pistons. The cam is in the motor and the gear is on the cam. from what i read the cam dowel should be at the 3 o clock when installing the cam, and the crank should be at tdc, correct?

someone please explain this. I bought this block with no markings, and didnt think it was gonna be an issue.
thanks
Old Mar 9, 2012 | 11:08 AM
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Re: What is the piston order for TDC

is this picture the correct cyl numbers?

Old Mar 9, 2012 | 11:11 AM
  #3  
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Re: What is the piston order for TDC

That would be it. Shoebox has tons of good info on his website and should point you in the right direction.

-Dustin-
Old Mar 9, 2012 | 11:30 AM
  #4  
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Re: What is the piston order for TDC

If you look through the cam install guide on my website, it should all be explained. All gears have markings. 1 and 6 pistons mirror each other during crank travel (other cylinders do the same thing). It's the cam position that determines which stroke the cylinder is on.
Old Mar 9, 2012 | 11:30 AM
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Re: What is the piston order for TDC

so this is the correct tdc where i should install my crank gear?


Last edited by greenformula94; Mar 9, 2012 at 11:34 AM.
Old Mar 9, 2012 | 11:36 AM
  #6  
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Re: What is the piston order for TDC

Ive read your page a few times now.

quoted from you
"Line up the dots on the timing gears. 12 o'clock for the crank gear and 6 o'clock for the cam gear. This will put the cam dowel at 3 o'clock and #6 TDC. "

So if i install my Crank gear on the crank at the position shown in my post before, and put my cam dowel at 3 o clock then im set?
Old Mar 9, 2012 | 12:30 PM
  #7  
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Re: What is the piston order for TDC

Yep, that is good.

http://shbox.com/1/engine_front_diagram.jpg
Old Mar 9, 2012 | 12:39 PM
  #8  
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Re: What is the piston order for TDC

awesome, its alot easier once you understand how to do it.

thanks man!
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