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Lyn Smith · 12-17-2010, 02:42 PM

A friend came across a GM small block all aluminum block with steel sleeves.It has a casting # 0f 366299. Can anyone tell us how old this block is,or what it was used in. it is a 4 inch bore. thanks lyn

12-17-2010, 02:42 PM	#1
Lyn Smith VIP Member Join Date: Dec 2001 Location: Pontiac,il. Posts: 1,207 Likes: 289 Liked 986 Times in 198 Posts	GM Aluminum Block I D A friend came across a GM small block all aluminum block with steel sleeves.It has a casting # 0f 366299. Can anyone tell us how old this block is,or what it was used in. it is a 4 inch bore. thanks lyn