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SSDiv6 · 12-03-2021, 04:22 PM

All the original 041X cylinder heads had 1.94" intake and 1.50" exhaust valves and used on the SBC 350/300HP engines.

If there are any 041 or 041X cylinder heads with 2.02" intake and 1.60" exhaust valves, they were modified and they also needed to unshroud the combustion chamber to clear the valves.

12-03-2021, 04:22 PM	#7
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,044 Likes: 712 Liked 1,583 Times in 582 Posts	Re: 041 X heads All the original 041X cylinder heads had 1.94" intake and 1.50" exhaust valves and used on the SBC 350/300HP engines. If there are any 041 or 041X cylinder heads with 2.02" intake and 1.60" exhaust valves, they were modified and they also needed to unshroud the combustion chamber to clear the valves.