Doing some work on a third gen camaro with a Big Block and want to know what eara and some HP/TQ nubers . All I know is that it looks stock on the outside with a 396 Turbo Jet air cleaner top . This motor pulls harder then any stock 396 I have bin in though . Block#s are (140f5445)

 

The 1401544 casting is a 454 block and was used in 1975 to 1987 pickup trucks. It's a very common casting but trucks didn't have high hp engines.

That doesn't mean much since any combination of parts could be inside the engine.

 

Theys motors can be 2 or 4 bolts right ,no way of telling without removing the pan . This motor has cast heads and intake .Will get the # s for heads tomarow . The output on them was what 260hp 350tq . I do not think thier is any thing stock inside , may be a roller . Thank You .

 

To my knowledge, just about all the 445 castings are only 2 bolt mains. I used one for a few years in my car before finally breaking it beyond repair.

Cast intake is dead weight but could still be sold for a cheap price. Heads "might" be 781 casting but I doubt it. I'm sure they're probably the tiny peanut port truck heads with no performance potential. Find a set of 781 casting heads and have some 2.19/1.88 valves installed in them.

260 hp might be a high end rating. 220-230 might be closer if that.

If it's a roller, then it's not stock. GM didn't start making a factory roller BBC until about 1996. When the Gen VI engines started coming out.

 

I just wanted to know what the stock motor put out , so I would have a better idea if it was stock or not . I thought it might of bin a older high output block . This thing is so not stock but I have no reason to pull apart right now , other then the valvecover . Will get head casting #s today . The rest of the car is built real nice .