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Old 05-20-2013, 07:12 AM   #1
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5.0 block/ how much hp are they good for?

I need the answer here to how much hp is good for a stock block a xxx block or a mexi block. I know people have made well over 500 on a stock block but this is very unsafe??? What is the true hp rating for this block. I am under the impression it is 500 am I rite?
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Old 05-20-2013, 10:30 AM   #2
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There is no true rating per say. But yes once you get around 500 things are a lot more likely to start breaking.
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Old 05-20-2013, 10:59 AM   #3
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Probly around 500 with a gurtle but your username is 96? Did you swap out the 4.6 ?

---------- Post added at 11:59 AM ---------- Previous post was at 11:58 AM ----------

Nvm I saw the pics of the fox
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Old 05-20-2013, 11:13 AM   #4
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Probly around 500 with a gurtle but your username is 96? Did you swap out the 4.6 ?

---------- Post added at 11:59 AM ---------- Previous post was at 11:58 AM ----------

Nvm I saw the pics of the fox
Lol yea it's my other car the 96 is getting a coyote tho 😜

---------- Post added at 10:13 AM ---------- Previous post was at 10:11 AM ----------

The fox is about to get a 5.3 Chevy with a turbo on her. Sorry guys yea I Know. But it's a lot more bang for y buck and the Chevy motor just handles more hp period.
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Old 05-20-2013, 11:22 AM   #5
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^^lol wow you may have just opened a huge can of worms
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Old 05-20-2013, 11:31 AM   #6
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^^lol wow you may have just opened a huge can of worms
May have but sorry facts are facts.

---------- Post added at 10:31 AM ---------- Previous post was at 10:26 AM ----------

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^^lol wow you may have just opened a huge can of worms
And please don't get me wrong I am a die hard ford guy like I said I am doing the coyote swap as we speak in my 96. But the better option is on the table and that would be a Chevy
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Old 05-20-2013, 11:44 AM   #7
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Originally Posted by OneSlow96

May have but sorry facts are facts.

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And please don't get me wrong I am a die hard ford guy like I said I am doing the coyote swap as we speak in my 96. But the better option is on the table and that would be a Chevy
I wouldn't go with that but that's just me I dont like the 5.3l I'd do a ls1 swap if I was going to do a ford with a chevy motor but I still couldnt do it haha i like my fords to much haha why not go with a 351w dart block stroked to a 427?
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Old 05-20-2013, 11:50 AM   #8
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I wouldn't go with that but that's just me I dont like the 5.3l I'd do a ls1 swap if I was going to do a ford with a chevy motor but I still couldnt do it haha i like my fords to much haha why not go with a 351w dart block stroked to a 427?
I am really against spending 4k on a bare block then it's still gotta be machined. I have a 331 rite now. My buddy just did this swap and no lie its a junk yard 5.3 with a precision 76mm turbo and that motor holds boost being totally stock and oh my god he is making 730 hp all day with no prob and that's to the wheels. I am dyeing for a boosted small block and this is the way to go. Over 700 hp for 6k I am there I spent we'll over that for my 331.
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Old 05-20-2013, 12:04 PM   #9
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Originally Posted by OneSlow96

I am really against spending 4k on a bare block then it's still gotta be machined. I have a 331 rite now. My buddy just did this swap and no lie its a junk yard 5.3 with a precision 76mm turbo and that motor holds boost being totally stock and oh my god he is making 730 hp all day with no prob and that's to the wheels. I am dyeing for a boosted small block and this is the way to go. Over 700 hp for 6k I am there I spent we'll over that for my 331.
Ye Is it efi ? And 6k just seems a bit low for the swap an turbo an 730rwhp on a stock 5.3l I'm not really a chevy guy so I don't really know what there good for but I couldn't see it lasting long
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Old 05-20-2013, 12:52 PM   #10
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Ye Is it efi ? And 6k just seems a bit low for the swap an turbo an 730rwhp on a stock 5.3l I'm not really a chevy guy so I don't really know what there good for but I couldn't see it lasting long
Well my buddy has it and it runs and works. That motor for some reason holds boost
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Old 05-20-2013, 02:29 PM   #11
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Originally Posted by OneSlow96

Well my buddy has it and it runs and works. That motor for some reason holds boost
Does it got stock heads? And how much boost?
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Old 05-20-2013, 02:37 PM   #12
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Does it got stock heads? And how much boost?
17 lbs of boost and yes bone stock motor except the intake manifold that is off a Camarro or something don't know **** about Chevy really but I am about to.

---------- Post added at 01:37 PM ---------- Previous post was at 01:32 PM ----------

If no one wants to think this is true just call the performance shop that tuned the car or I will give you a website
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Old 05-20-2013, 08:32 PM   #13
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Yeah its true the 5.3's do well with boost and is a better engine option for a turbo car than a LS1. The LS1 motors are more effective with nirous build ups.
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Old 05-20-2013, 08:40 PM   #14
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17 lbs of boost and yes bone stock motor except the intake manifold that is off a Camarro or something don't know **** about Chevy really but I am about to.

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If no one wants to think this is true just call the performance shop that tuned the car or I will give you a website
700 plus rwhp with a stock 5.3 liter?? I call BS on that. What's the website of this build.
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Old 05-20-2013, 08:55 PM   #15
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Why do you call BS? Think about it for a minute, cant the coyote make 1000+ with turbo power?

At 17psi the engine will make about 1 1/2 times the power of the engine in N/A trim assuming the heads are big enough and on the 5.3 they are. Really 700HP isnt that big of a strech.
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Old 05-20-2013, 09:45 PM   #16
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One thing you might wanna read up on about those 5.3l is a thing gm calls "piston slap". Tech bulletins abound about it. The motors tend to knock in the morning caused by piston shrinkage which gm calls "normal" cuz they dont wanna fix countless motors. I call it poor tolerances.
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Old 05-20-2013, 09:50 PM   #17
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IMO, above 450whp is pushing it but you can't exactly go just by numbers. A car making 475-500whp with a great tune and keeping the RPM at 6k or below can last awhile while a badly tuned or engine with another problem might blow up at a much lower level.

As far as a girdle... all a girdle will do is hold your block and all your pricey forged parts in a neat little pile when your block splits down the lifter valley. They are snake oil.

I personally see why ppl do the 5.3L/LS1 swaps into Mustangs, they are cheap, readily available, were in all sorts of things, performance parts are abundant and they are pretty stout with a simple Katech rod bolt upgrade. Swap has also been done enough to where it is pretty much a drop in nowadays.

With that said, for $6k you can get a VERY high power level out of a Modular. Modular blocks can be had for FREE and are good for well over 1000whp through them if not more. .020 over, forged rotating assy, cheap set of C heads or ported PI heads and its pretty much a wash after that as far as turbos and fuel systems to get the PSI into the motor. Plenty of unrevised C headed motors and ported PI 2Vs in the 600-700whp range with a stout blower setup.

Also, with something making THAT much power you are looking at $10k+ at a bare minimum for something that isn't going to blow up after 3 runs at the 1/4. Fuel, trans, suspension to get the power to the ground, safety gear, upgraded accessories, a quality blower setup not to mention the engine... yeah...
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Old 05-21-2013, 08:54 AM   #18
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700 plus rwhp with a stock 5.3 liter?? I call BS on that. What's the website of this build.
Pitbull performance deer park ny

---------- Post added at 07:54 AM ---------- Previous post was at 07:53 AM ----------

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Yeah its true the 5.3's do well with boost and is a better engine option for a turbo car than a LS1. The LS1 motors are more effective with nirous build ups.
Thank you
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Old 05-21-2013, 10:30 AM   #19
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Ye I did some digging an found a f body camaro that buddys got 996rwhp or something like that on a stock 5.3l an his name was stangkiller it was on one of the chevy forums
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Old 05-21-2013, 10:33 AM   #20
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Ye I did some digging an found a f body camaro that buddys got 996rwhp or something like that on a stock 5.3l an his name was stangkiller it was on one of the chevy forums
Lol yea bro those things go and hold the power to it
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Old 05-21-2013, 11:35 AM   #21
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Lol yea bro those things go and hold the power to it
Haha guess so I still think you'll be over 6 gs doing this but if your a little over 9 or 10 and it last for two years or so then that's ok I guess I still couldnt see them lasting long even with a safe tune at those # you'd probably be lucky to get 75,000 kms out of it before it throw a rod out the side or you find a piston in the oil pan but hey you ever know maybe you'd get 175,000 kms out of it..
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Old 05-22-2013, 08:40 PM   #22
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One thing you might wanna read up on about those 5.3l is a thing gm calls "piston slap". Tech bulletins abound about it. The motors tend to knock in the morning caused by piston shrinkage which gm calls "normal" cuz they dont wanna fix countless motors. I call it poor tolerances.
Yeah but that kinda enginering is what you get with every chevy engine is it not? lol
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Old 05-22-2013, 08:46 PM   #23
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Seriously though like I said 700rwhp isnt that far of a stretch for a stock chevy v8 engine pushing turbo boost.

Last trip I made to the track I saw a kid running a 650hp 5.3 on spray in a 80's Z28 and he grenaded the stock trans and the stock 10bold rear before he made it to the 60 foot mark. So I would be more worried about the rest of the car being able to take the power. Im sure you wont be as impaitent as that kid was and make sure the rest of the car is up to snuff before you flog the car.
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Old 09-06-2013, 11:14 PM   #24
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I've seen the small 4.8 I brleive make 1200hp with a twin turbo....engine was bone stock
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