LT1 timing chain concerns,
08-15-2004, 08:29 PM
#1
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Location: Norfolk, VA. USA
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LT1 timing chain concerns,
I was looking at a timing chain gif that Shoebox posted last week and I noticed at #1 @ TDC the timing marks were at 12oclock on both the cam and crank sporckets.
I had #1 cylinder at TDC and installed the timing set with the timing mark on the cam sprocket at 6oclock and the crank sprocket at 12oclock, just like you would do on a normal SBC.
Am I going to have to yank the chain off and re-do it? The oil pan gasket is a pain in the *** to put back on (motor is in the car).
I had #1 cylinder at TDC and installed the timing set with the timing mark on the cam sprocket at 6oclock and the crank sprocket at 12oclock, just like you would do on a normal SBC.
Am I going to have to yank the chain off and re-do it? The oil pan gasket is a pain in the *** to put back on (motor is in the car).
Last edited by Zepher; 08-15-2004 at 08:37 PM.
08-15-2004, 11:02 PM
#2
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Location: Garner, NC
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Re: LT1 timing chain concerns,
You're good to go man! Just to make sure I'm thinking about this correctly the dot on the cam gear is at the bottom and the one on the crank gear is at the top 
Is this the diagram you are referring too?
Timing Gears
Richard
Is this the diagram you are referring too?
Timing Gears
Richard
Last edited by 1fastlt1; 08-15-2004 at 11:08 PM.
08-16-2004, 03:57 AM
#4
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Re: LT1 timing chain concerns,
cool, thanks.
The animated gif showed the timing set rotating and showed where the marks were for tdc of each cylinder.
This is the gif I saw,
The animated gif showed the timing set rotating and showed where the marks were for tdc of each cylinder.
This is the gif I saw,
Last edited by Zepher; 08-16-2004 at 04:03 AM.
08-16-2004, 09:37 AM
#5
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Location: Fuquay Varina, NC USA
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Re: LT1 timing chain concerns,
That's because the cam turns 1/2 the speed of the crankshaft.
Therefore, the cam mark will be at 12 o'clock at one point and 6 o'clock one crankshaft revolution later. As the crank turns, they align, they don't align, they align, they don't align...
Therefore, the cam mark will be at 12 o'clock at one point and 6 o'clock one crankshaft revolution later. As the crank turns, they align, they don't align, they align, they don't align...
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