Short decks Tall decks...lol. What about 307s n 403s. Step children I think??lol. Big block olds Small block olds That’s what the factory called em I will too.
Any non bored good casting 396 blocks make it into a 70 SS? By closed chamber are we talking about the bathtub style chambers? Those look awful for good power.
From what I remember Performance chamber street engine oval ports Best are 063 closed, 049,781 open. But there are those using some late models as old iron gets scarce.
Not opinion, FACT. The MOPAR big blocks are B and RB(for raised block) Just because Olds and Pontiac didn't distinguish their engines is this less confusing matter doesn't mean they are small blocks and big blocks. So answer the question smart guy, what does that make the sbb engines that have 3 different deck heights? When you can bolt 455 heads to a 350 block means it is the SAME platform.(period) Just because those smaller displacement engines got corralled in with the sbc and sbb engines back in the day by people that didn't know better doesn't make it true.
So the 1968 or 1969 325 hp LS5 396 and 350 hp LS4 396 have the same 063 bathtub chamber heads? These are technically the lowest performing heads? Would these 063's also be on a 69 396 2 barrel impala for example or even a lower output 427? Chevy has so many BB heads on so many BB sizes I can't keep up..
Oldsmobile did distinguish Pontiac. I do not think so Regardless I don’t care. If you were there in 68 w ram rod cars or 70 up w31. Well What can we say. and everyone knows pontiacs all look the same w a glance but examining can tell you in many cases understanding blocks and numbers of course. And Buick making so many small blocks. That is how it went. Which is cool.
Man I forget much and haven’t spoken on 325 vs 350 hp engines Cams and timing I think we’re main difference. I could be wrong . Very wrong at that.
I would like to see where the "factory" called them small blocks. Like I said, just because people that didn't know better called them small blocks because they corralled them in with the Buick and Chevy small blocks doesn't make them small blocks. The 307 and 403 engines had the same deck height as the 350 and one could bolt 455 heads on either of those engines. And AGAIN, why are the sbb engines small blocks when they have 3 different deck heights? And we're not talking a couple thousands either! The sbb 215 has a 8.960" deck height(smallest) and the sbb 340/350 has a 10.187"(tallest) deck height which is 1.227" taller than the 215. The Olds is a bit more of a difference but not much, 10.625 - 9.330" = a difference of 1.295" which is only a measly .068" more than the difference between the shortest sbb and the tallest sbb. Now when we look at the Pontiac the deck heights are the SAME for the 326 all the way to the 455 which would mean by you guys' logic that the only Pontiac small blocks would be the 265 and 301 because they have a 9.143" deck height versus what the rest of them have which is 10.25" which is LESS that the sbb difference of deck heights.(1.107") So why is a Pontiac 350 a small block, because the bore and stroke is smaller? NO, it doesn't work that way, hmmm, I'm stumped, please tell me why a Pontiac 350 is a small block?
Sorry to bombard you!! I think the difference also from a 325hp and 350hp was the cam, timing jetting, maby on occasion the block being a 4 bolt main and open element air cleaner. but was curious on the heads, that's all.. Thanx I don't even plan on buying one either which makes it even more sad that I asked.
The way I distinguished Pontiac small block & big block were the main diameters which was for the 421/428/455 3 1/4" even tho deck heights were the same.
Tom, so that brings us back to the sbb engines where the 215 and 300 have 2.500" mains and the 340/350 engines have 3.00" mains, the main size doesn't make the block bigger or smaller. That's even a weaker argument than the deck height being shorter.
Don't even try, Tom. You're in the presence of the almighty know nothing know it all. Often wrong, but never in doubt. Pretty soon we'll be getting some links to government conspiracies and youtube vids and how we're being dooped into our thinking by the meds we're given secretly.....
Don't be mad at me because your way of thinking for probably many years was wrong because you listened to misinformation and thought it was truth. At least I can admit I'm wrong when I am, like in your puppies thread.
Does a "short deck" olds have a physically smaller block then a "tall deck" olds, Derek? Not length, or width, or height wise, that's your opinion which of those makes it a small or big block. Answer the question, simply yes or no: Is a 455 olds block physically larger then a 350 olds block?
What a cop out! Looks like you're "Bwahahahaha" ing out of embarrassment from being wrong. You know you can't answer my question, who's the know nothing know it all, that would be you. Just goes to show how true this Samuel Clemens quote is; "Its easier to trick someone than to convince someone they were tricked." The Olds engines were a single platform like the sbb engines. The BBB and sbb engines were 2 different engine platforms, just like the BBC and sbc engines. The Pontiacs are also a single engine platform, tell me how can a single platform engine be a small block and a big block at the same time? And why is it that The Mopar B and RB are big blocks with 2 different deck heights not a big and small block? Oh yeah because they made a MOPAR small block that was a DIFFERENT engine platform. Schooled!
Oldsmobile is distinguished between big and small block. Pontiacs are all mid blocks. And the main year blocks are all same deck heights with main saddle differences. And the rear block also has distinguished bump on pass side rear for 455. Buick smalls were a few as were Olds. Chevy is week known. Ford has many different blocks big and small. To many to mention. Mopar is also different blocks in big And I think 1 general height in smalls till the small block hemis of now.
Sure, Olds offered their version of the 215 small block. Other than that they were called Olds with a CID after that, around here anyway.(the Detroit Metropolitan area) I remember the Olds 350 being called the Olds 350 Rocket but never with small block after that. Here, this website might help everyone figure out what engine is what; http://victorylibrary.com/mopar/m-table-c.htm So what would the Olds engines with the 10.500" deck height that are a smaller displacement than some of the shorter deck 9.33" deck height engines be? Oh yeah, Olds had 3 different deck heights just like the sbb engines did which is very similar to the Olds small block 215.
