![]() After a certain point in the very late 69, 70 production year, the CJ went to a 2-bolt cap. The very early CJ/SCJ blocks were both 4 bolt mains, 2,3,4. ![]() drop the oil pan and check the main bearing web to be sure. It is likely that somewhere down the line the original engine may have been replaced, swapped, stolen, moved to another car. Second, these cars/engines are 40 years old and they were performance engines. First there are no "bad" LIMA blocks, just some are better than others. What it WILL tell you is that the block has thick main webs, making it a CJ/SCJ block (PI too).įinally - 2 things to remember. Since the two or four bolt caps were added after the block was cast, the casting number WILL NOT tell you if it is a two or four bolt main block. Instead they are as cast and end below the oil pan rail. By contrast, main bearing webs on the base 429 (Thunder Jet) block at right get thinner as they meet the sidewall and are not as tall as their CJ/SCJ counterparts. * see the pictures on the link/web site, its obvious what they are talking about, once you see the picture.Īlso the CJ/SCJ webs are taller and machined to the same height as the oil pan rail. The webs on the CJ/SCJ block get thicker, stepping from 1” to 1.4” near the intersection of the web to the sidewall while the base 429 block webs are noticeably narrower*. In addition to the casting numbers, CJ/SCJ blocks were signified by having thicker main bearing webs than the standard 429 blocks. A visual indication should clear up any doubt - go to the link and read the information. ONLY D0VE-A and D1VE-AA casting numbers on the block signify CJ/SCJ blocks. hate to not give credit to the author.Ĭlick to expand.According to the information on the link. I would list the link, but for some reason it gets screwwed up. On 71 429 SCJ Mustang, both 2 and 4 bolt mains were possible - JB) ![]() Very rare and very expensive as only about 1,200 were made. ID by casting number on the block of C9AE. It had four bolt mains, aluminum hemi-style heads and looked like no other engine. It came in special Mustangs (and 2 Cougars) in 1969-70. It was rated at 375HP (grossly underrated). Even less common with a production of maybe 3,000. The difference was forged pistons, solid lifter cam and four bolt mains*. The 429 SCJ was a stronger version on the CJ. Not too common, maybe a total production of 15,000. ID'd by D0VE-A and D1VE-AA casting numbers on the block and D0OE-R on the heads. 370 HP (likely underrated), thick strong blocks and massive ports int he heads. It was only installed in mid-size (1970-71) and pony cars (1971 only). Can be ID'd be block casting numbers of C8SE, C9VE, D0VE, D1VE among others and head casting numbers of C8SE, C9VE, D0VE among others. By far and away the most common - they made 100,000+ of these. It came in T-birds and full size Fords in the late 60's and early 70's. First was the base 429, known as the Thunder Jet (TJ).
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