In 71 they went to an open chamber head and different pistons.
So basically what I did with my 348. Start with the block and replace the rest.yes, cast crank 2 bolt block
I think 396's were internally balanced and 402's were externally balanced engines.with everything being said, the block, and crank would be the same for 396/402 for years 69-72? There were 2 castings, 854 and 290?
I think 396's were internally balanced and 402's were externally balanced engines.
I have found most bbc's '70 and earlier had forged cranks. Cast cranks after that in engines with oval port heads.
OK I wasn't sure on the 402's but I know 454's were externally balanced, I thought 402's may have been also.No, same as 396 which is what it was with an over bore
My money is its a 396 that has been bored to 402 so nothing we have said matters until you get casting numbers for the block and heads. LOL! Be sure to tell us which Quadra-Junk is on it because I hate those!And this is why I ask questions, I don’t think now this guys knows what he has. I certainly don’t know any of this other than what he said but obviously isn’t right. It may Well be a bbc in a 4x4 but done at sometime after the fact and be a car engine transplant.
Not like a complete big block shows up for sale every day in your neck of the woods.
If you're not planning on over 500 hp,6000 rpm for mostly street use Tim the stock cast crank will be fine as will the stock rod.
My money is its a 396 that has been bored to 402 so nothing we have said matters until you get casting numbers for the block and heads. LOL! Be sure to tell us which Quadra-Junk is on it because I hate those!
Is it easier to fit a bb or a w in a 66? BB headers or manifolds likely more available plus lots more bb stuff available aftermarket.it would be a street engine. I have my eye on a 66 C-10 step side short box. It’s very plain with a 6 cylinder 3 on the tree. If I can get it it would be a long term project. An engine to build is a fun shed project like the 348 since I don’t have a garage yet.