does anybody know the total maximum horsepower a stock production 350 block can handle.

 

what are you asking ?
what is the highest hp stock production 350 motor ?
how much hp can you build with a 350 block ?

 

how much horsepower can a bare block handle before it breaks. example I heard you can't make over 750/800 horsepower with a stock production block (commonly available in yoour favorite junkyard) cause pass that horsepower they split in two or crack/break; thats why ppl go to aftermarket block (e.g. dart little m) is that true???

 

617hp max, any more than that and it'd split along the casting lines

 

thanks ede. any other opinions??

 

Umm.... I think he was being sarcastic...

(note the smilie)

 

Should have gone along with it and seen how long he believed it.

 

Fill the block with plain water instead of coolant in January and you'll split the block at zero horsepower.

 

is ok guys If you don't know hell neither did I but it was a legitimate question, maybe one day when you are ready to build a trully powerful engine you'll understand my question or face costly mistakes, thats is why there are aftermarket blocks plus you will know the benefits of 400+ci when it comes to sbc power oh well later and thanks.

please Im not here to play sarcasm games so don't try to come back with smart answers, really don't.

 

no no, Ede is talking out of his a**, it's ALWAYS 632HP, until 1983, then it's 645HP... He must'a been thinking of the older '60s blocks with extra steel in da block, those were lower, like 617HP.





ok, all jokes aside, it's more of a luck thing than anything else, some blocks were made better, some had casting defects and split easier. An aftermarket block will probably have a rating with it to give an idea as to how much power it could handle.
Keep in mind, a block is EXTREMELY strong, you'll probably break everything else in the motor first... Then again, you could buy aftermarket forged parts, crank, pistons, etc etc, and have a higher ceiling, but then why are you sticking with a stock block?
It's a tough call, depending on how well everything is setup, such as tolerances, oil type (don't ask), quality of other parts, quality of machine work etc, you could get an unlimited amount of horsepower out of a decent factory block..... Then again, the machinist can make one little ooopsie cleaning up the cylinder walls, make sure no one is looking, toss pistons in your block and you could blow it apart 3 weeks later with 220HP.

 

So, what is this "handle"?

Would you like to know how much it can produce once; two times (NHRA w/backup); 3 dyno pulls within 5%; 30 laps plus 2 qualifying and a 15-lap heat; 500 miles (not 500 plus a green-whit-checkers, and 25 practice laps); or what?

When we can tell you that, we'll probably also be able to tell you right down to the penny how much life insurance you need, too.

Small block power begins at 400 CID. It only goes up from there. Want to win, you better understand that. That's why there's CID rules in some classes, is to keep people like me out. There's no "benefits" from having more; only drawbacks from having less.

???

 

see now thats what im talking about... before i trully understood the ci power advantage i started building a 383 with fully forged internals capable of handling 1000+ horsepower not knowing that I forgot about a limiting factor to my combination the block horsepower rating, so all I want is to know say just as an example If I make 500hp all motor how much nitrous will I have to use to make my block max horsepower capabilities with nitrous to run competitive but without breaking the block since my internals can handle more power than what the block can.

as far as getting an aftermarket block is too late now because when I do get one (dart little m) Im going for a 454ci sbc no more costly mistakes I hope, who knows maybe I will even go the big block route. thank guys

PS: someone told me that 750/800 horses is the maximum a stock production block can handle and that pass that mark is buy buy block. do you guys agree??? see... it was a legitimate question

 

it's very unlikely your internal parts can or ever will take more power or abuse the the casting that's around them. wrist pins and bolts are the first to go along with valve train parts. with a power adder you might see the piston fail or melt. if you're making as much power as you're talking

 

No games, no sarcasm, complete understanding. It's an asinine and illegitimate question. Do you include in your vastly general question the various alloy castings throughout the years? Any blocks that are 'stress relieved', cryogenically enhanced, treated, filled, etc... see where this goes?

So the answer is of course is 42.

 

I dont think there is an answer to this question. It all depends on the condition of the block, how well your internals are balanced and what kind of fasteners you are using. Also I think rpm's play more of a role in breaking a block then HP or torque. BUut that is my thoughts.