396 3935440 block help

[jasonL78]

Can you tell if a 396 with the casting 3935440 is a 2 bolt or 4 bolt main. Besides the main caps is there any cosmetic difference.

Jason

[enio45]

i thought the 4 bolt had the oil galley drilled out on the side of the block....recall this somewhere when i was seaching for my block.

[Kim_Howie]

double holes in side above filter.

[bertfam]

Jason,

2 Bolt Main:




4 Bolt Main:



Ed

[jasonL78]

Thank you very much. I got a complete 68 396 with the chevelle I just bought and I just wanted to know if it was a 2 bolt or 4 bolt main without moving the oil pan. Thanks again

[bertfam]

No problems Jason. So which one did it turn out to be? Two or Four?

Ed

[COPO_Anders]

How do you explain the fact that I have two 4-bolt main blocks with the small "oil holes" ?
This pic is from my late -69 4-bolt #512 block.

[COPO_Anders]

And this one is from my 1990 marine 454 4-bolt #286 block.

[jasonL78]

Mine ended up having the small hole so I guess it must be a 2 bolt main block. It does have the 2 step oil pan on it. Would the 325hp motor have a windage tray! I will double check it when I get time. I have been looking for a April or May 440 4 bolt block for my 68 L78 nova. The one I just got is a E-18-8 block.The motor I have in the nova now is a 2 bolt main out of a 68 4 speed 350hp chevelle. I want to build a correct L78 motor for my nova in the future. If this block I have would have worked then I was going to use it. I thought the only difference might be the main caps. So I guess the search continues and the motor will most likely go into the 67 chevelle.

Jason

[bertfam]

[ QUOTE ]
How do you explain the fact that I have two 4-bolt main blocks with the small "oil holes"?

[/ QUOTE ]

I can't

Ed