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Need help with Cam install...dot to dot

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Old Mar 1, 2004 | 10:08 AM
  #1  
Shinobi'sZ's Avatar
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From: Forced Induction Heaven
Question Need help with Cam install...dot to dot

Just finished installing my cam on my car. Using a Roll Master Double Roller as a timing chain...there is only 1 dot on the Crank Gear and 1 dot on the cam gear, there are 9 groves in the crank gear (4* advance/retard). With both gears lined up DOT to DOT (crank gear is in the middle key way #5) and Pistons #1 and #6 at TDC everything appears to be fine. However, I stuck a pushrod in the intake of #1 and rotated the assembly by hand....what I observed is that #1 is on exhaust and that #6 is on compression...is this right???? I thought maybe that #1 should be on Compression when the gears are lined up dot to dot?????

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Old Mar 1, 2004 | 12:17 PM
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TXNC5's Avatar
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Yeah, this threw me off too. #6 is about to fire when they are lined up, not #1. I kept rotating it and watching the pushrod. I kept thinking something was really wrong.

I am sure you can confirm this throught search.
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Old Mar 1, 2004 | 09:40 PM
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??? I'm confused
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Old Mar 2, 2004 | 09:37 AM
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Originally Posted by Mike94ZLT1
??? I'm confused
I had always thought that when the cam and crank gears are at standard (dot to dot) that #1 cylinder should be ATDC on the Compression Stroke....on the LSx #6 ATDC is on the Compression Stroke and #1 is on Overlap....it was really screwing me up Sunday..but it looks like I did it right.....I guess the GM Engineers made it so as long as you align the timing gears DOT to DOT..even a Monkey or Gorilla like me can't screw it up.
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