1967 Chev 302 parts choice question

Alan Roehrich · 09-29-2012, 01:21 AM

Tom, they have made small journal Bow Tie blocks, I've worked on several. They go in an out of production, and are hard to find. The first 4 digits of the part number are, or were, 1248, they share the same casting box as the 1248050 medium deck block (3.98 rough bore, 283 main journal, casting #12480050) and the 12480097 SB 2.2 block (4.116 rough bore, 283 mains, SB 2.2 lifter pattern, casting # 10051184A). They made a 3.98 bore block with 283 journals, standard lifter pattern, and a 9.025 deck height. If/when they'll make any again is a hard question to answer. If memory serves correct, the casting number was 10051184, I think one part number was 12480084. It was originally made for the 18 degree NASCAR program.

They don't make a Dart small journal. They probably won't, but you can always ask. What they won't do is make a Dart block that is 3.875 or smaller bore. The SHP blocks are 350 main, it might be possible for them to make a small journal version, but they'd probably want to make 50.

09-29-2012, 01:21 AM	#13
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,132 Likes: 1,600 Liked 1,912 Times in 429 Posts	Re: 1967 Chev 302 parts choice question Tom, they have made small journal Bow Tie blocks, I've worked on several. They go in an out of production, and are hard to find. The first 4 digits of the part number are, or were, 1248, they share the same casting box as the 1248050 medium deck block (3.98 rough bore, 283 main journal, casting #12480050) and the 12480097 SB 2.2 block (4.116 rough bore, 283 mains, SB 2.2 lifter pattern, casting # 10051184A). They made a 3.98 bore block with 283 journals, standard lifter pattern, and a 9.025 deck height. If/when they'll make any again is a hard question to answer. If memory serves correct, the casting number was 10051184, I think one part number was 12480084. It was originally made for the 18 degree NASCAR program. They don't make a Dart small journal. They probably won't, but you can always ask. What they won't do is make a Dart block that is 3.875 or smaller bore. The SHP blocks are 350 main, it might be possible for them to make a small journal version, but they'd probably want to make 50. __________________ Alan Roehrich 212A G/S