Factory HP from my 350?

I have a SBC 350 W/Block#3970010.How much HP did this motor produce from the factory?I have upgraded the Intake to a Edel.Rpm Proformer topped off W/Edel.600 Carb.A guess at what I should be at?  

those are common but good blocks they came with 185-360hp depending on what vehicle they came in.the high hp ones were mainly from corvettes.they were produced from 69-79 and came in both 2 and 4 bolt mains  

Are there any markings on the block to tell what vehicle it was  put in at the factory?  

Look on the front pad and post the codes.  
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Ok,I only found 2 other sets of #'s on the block.First were a set of 3 numbers above the Oil Filter which read - 371,386,89. The other #'s are on the rightside of the back of the block and that # is G136  

look on the pad in front of the passenger side head  

#93322 on drivers side of block in front of the head.Does this help ID. it or am I still lookin at useless #'s?  

Ok,I found the #'s on the front passenger side pad. 16?479165  There is a letter between the 6 - 4,not sure what it is but possibly a T or V. I also found the letters C M J farther up the pad.  

It is a 4 Bolt Main if that narrows it down at all.  

cmj comes back as '74 350 came in full-size car with th400 police trans didnt give a hp rating  

Thats weird because I stayed up to 4am lastnight on the internet and found a web site that explained some of the markings on a block.It has a manu.date of G136 which is 7/13/76.Also the site explained the code on the pad as 1st# - 1=Chevrolet and the second# - 6=1976.The 3rd is supposed to be a letter which indecates which assem.plant the block was to be shipped to.The site also said that the Saganaw Plant used to put a "Clock"stamp on the block to show what shift and time it was casted.Mine has the "Clock" on it.  

I had 2 other people look at the block and they said its C A J.Does that make sence?  

The suffix code cmj comes up as a 1975 350 from a impala or chevelle with a 145HP.  
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I posted some other info I've found which the Manu.date G136 = 7/13/76 and 2 other people looked at block today and say it reads CAJ not CMJ.Does that make any sence to you?It is a 4 Bolt-Main as well.  

No it does not because my sources say that there is no caj suffix code.  
Professional hi-performance engine builder

Horsepower sells Engines and torque wins races.