I recently bought a running engine with a D1VE block and C9VE-A heads. Looking in a book I have it lists those casting #'s as the block and heads used in the CJ and SCJ engines. Is that all it takes to make a CJ, or are there other internal parts involved. Did I luck out getting a good running engine or did I really luck out and get a rare good running engine? I have not pulled the oil pan or measured the stroke, so I have no idea if it's a 460 or 429. Any guess what this may be worth? TIA
Jim

 

The heads are not CJ/SCJ. Only casting number for those heads was DOOE-R. CJ/SCJ blocks were DOVE and DIVE-AA.

 

George, thanks for the reply. I appreciate your input. Is there any source that details the casting #'s on the different 429/460 engines?
I bought Tom Monroe's book on rebuilding the 460 engines, and it lists 3 or 4 heads used on the CJ engines through the years, and several blocks. He states that that comes from the best information that he had avalable. Is sounds like there may be some confusion on his part even. It's not that I doubt your reply, I am highly confused. I am just trying to learn more.

 

With the exceptions of CJ and PI heads and some block numbers, Monroe's book is an excellent reference, as are others. Easy way to define 385 casting numbers is to first take out the CJ/PI numbers.

'70/71 CJ and PI heads (no difference) are DOOE-R. '72-74 PI heads are D20E-AB.

'70/71 blocks with thick main bearing webs are DIVE-AA and DOVE (can't remember the last letter). Some were finish machined as 2-bolt mains, some 4-bolt. Some CJ/SCJ blocks also had CJ in the lifter valley, others didn't. All other '68-78 blocks, regardless of casting numbers, have standard webs.

Then use the first two digets of the casting number for year of manufacture for the rest.

C8 = '68
C9 = '69
DO = '70
DI = '71
D2 = '72
D3 = '73 up
I've heard there are D4s but haven't seen any

Crankshafts are 4U for the 429, 2Y for the 460. There are 3Y 460 cranks, but stay with the 2Y.

'68-'71 heads are small chambered with rail rockers, '72 (D2XX) stay away from due to open chamber, '73-78 D3 have the intake valve raised .100 with larger chambers and pedestal mounted rocker arm assembly. All, other than the CJ/PI and D2, will provide about the same results with extensive porting.

4-bolt blocks are scarce, and no longer that important unless you're a restorer. Several vendors now provide 4-bolt conversions for the 2-bolt thin-webbed blocks that will handle up to 900-1000hp. Beyond that, things start moving around and an aftermarket 4-bolt is required.

 

So, what you are saying is my D1VE block could have 4 bolt mains? Is the D1VE block commonly found in 73-79 trucks? My truck is a 76, but I have no clue as to the originality of the engine. Heads are run-of-the-mill D3VE A2A.
Mark


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It's a real long-shot that you have a 4-bolt, but stranger things have happened.

 

georgedavila....... DOVE-A is the other one your looking for. Never seen a DOVE-B or anyother combinations.

'70/71 blocks with thick main bearing webs are DIVE-AA and DOVE (can't remember the last letter). Some were finish machined as 2-bolt mains, some 4-bolt. Some CJ/SCJ blocks also had CJ in the lifter valley, others didn't. All other '68-78 blocks, regardless of casting numbers, have standard webs.

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