L46 corvette
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1st Gear
Joined: May 2015
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L46 corvette
Hi,can someone answer my question regarding my 1969 corvette? The 1969 owners manual states the L46 bore stroke is 4.00 x 3.48 comp ratio 11.0:1 350 timing mark 4. My engine I believe is an L46 my bore is 4.001x 3.48 and it times on the 8. I got that spec off a web site.Why is my timing mark 8 and not a 4 like the L46 and the manual states it should be a 4.
Drifting
Joined: Oct 2005
Posts: 1,615
Likes: 150
From: Forth Worth TX
The base engine (350/300hp) timing at idle was 4* BTDC, the L46 (350/350hp) is 8* BTDC at idle.
Page 137 of this .pdf.
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
Page 137 of this .pdf.
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
Safety Car
Joined: Jan 2008
Posts: 3,795
Likes: 435
From: Aarhus, Denmark
The base engine (350/300hp) timing at idle was 4* BTDC, the L46 (350/350hp) is 8* BTDC at idle.
Page 137 of this .pdf.
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
Page 137 of this .pdf.
https://www.gmheritagecenter.com/doc...t-Corvette.pdf
