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Head stud 5.3 or no?

Old 12-05-2018, 12:24 PM
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Default Head stud 5.3 or no?

Looking for some advice. I'm getting a lot of different answers on this. My truck is an 04 silverado rcsb 5.3 and I have the 7875 on3 turbo kit ready to install. I plan on driving the truck everyday.
current mods:
btr stage 4 truck cam
circle d 3500 stall
Eaton tru track diff
1 7/8 long tubes to full 3" exhaust
ls6 valve springs
tuned on 93

My question is when I go to put my turbo kit on should I head stud it? And on3 said I can do the one bolt out and stud in method(studding the heads with removing the heads) I'm only wanting to make 500-600 hp to the wheels. I have a walbro 450 pump and 80lb decapped injectors also ready to go with the kit. Any advice you guys can give me on to stud it or not to? If I have to can I do it by not taking the heads off? Seems Sketchy to me.

Last edited by Sandmanlsx; 12-05-2018 at 01:29 PM.
Old 12-05-2018, 02:42 PM
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Ummmm

I wouldnt worry about it. I made 477 with the "weak" rod bolts, and stock gaskets, 862s, TTY etc. Basically the worst of the worst 5.3 stuff right? Blower was on for ~10k mi that time. Came off for 2yrs, put a P1 back on it for ~5k mi including a trip to LS Fest West towing a car.

That motor has ~185k on it right now, only been opened up for cam swaps. Doesnt even have the notorious pre 03 piston rattle.

Personally, I would save the money and time and get a custom tune instead. I do agree that method is sketchy, but that is what I expect from ON3 honestly. If it can be done cheaper, by God they'll figure it out lol.
Old 12-05-2018, 03:00 PM
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Originally Posted by arthursc2
Ummmm

I wouldnt worry about it. I made 477 with the "weak" rod bolts, and stock gaskets, 862s, TTY etc. Basically the worst of the worst 5.3 stuff right? Blower was on for ~10k mi that time. Came off for 2yrs, put a P1 back on it for ~5k mi including a trip to LS Fest West towing a car.

That motor has ~185k on it right now, only been opened up for cam swaps. Doesnt even have the notorious pre 03 piston rattle.

Personally, I would save the money and time and get a custom tune instead. I do agree that method is sketchy, but that is what I expect from ON3 honestly. If it can be done cheaper, by God they'll figure it out lol.
Yeah I honestly didn't think studs would be necessary from the loads of research I've done. And yeah the "worst of the 5.3 stuff" seems to work good haha. Im going to send it. Im doing eveeything "right" besides studs. Ill be fine as long as i don't pour the boost to it I guess
Old 12-05-2018, 04:07 PM
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I ran 12lbs like I said, no problems. I dont think Ive ever even had lifter tick with this motor. If it ticks, I cant hear it above the exhaust anyway haha.
Old 12-05-2018, 04:21 PM
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I would stud it, however lots of people have gotten by without. I put ls9 head gaskets and studded mine. 20psi so far with no issues. You can do them one by one if you want, that's how i did them on my 5.9 cummins. But IMO if you aren't changing the head gaskets don't bother studding it.
Old 12-05-2018, 04:31 PM
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Originally Posted by Burnett03
I would stud it, however lots of people have gotten by without. I put ls9 head gaskets and studded mine. 20psi so far with no issues. You can do them one by one if you want, that's how i did them on my 5.9 cummins. But IMO if you aren't changing the head gaskets don't bother studding it.
I'm not studding it for now. But for future knowledge how did you do the studs one by one? Did you take them out randomly the put a stud in and tighten it fully then move to the next? Or did you take them out in reverse tourqe sequence then tighten them down in sequence?
Old 12-05-2018, 05:24 PM
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I pushed my stock LQ4 to 15psi and 6800 for years on stock heads and bolts. Zero issues. Now beyond that, I would stud it but.....
Old 12-05-2018, 05:34 PM
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Originally Posted by Sandmanlsx
I'm not studding it for now. But for future knowledge how did you do the studs one by one? Did you take them out randomly the put a stud in and tighten it fully then move to the next? Or did you take them out in reverse tourqe sequence then tighten them down in sequence?
You do them one at a time. Remove a bolt, but the stud in and torque it. Then move on to the next. The bad part of doing it this way is you run the risk of getting **** in the block holes and it's harder to chase the threads and get them cleaned out.
Old 12-07-2018, 12:39 PM
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Ok I'm running into another problem now...i think .... i have Brian tooleys stage 4 truck cam in my motor now with ls6 valve springs. I've been doing some research and guys that have stock cams with ls6 valve springs are floating valve springs when they run more than 10psi of boost. So what I'm thinking is my cam might be too much for boost with ls6 valve springs? Does anyone have any input or knowledge about my cam and valve springs with boost? Cam Specs are 224/230 .553/.547 111+2
Old 12-07-2018, 02:29 PM
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Originally Posted by Sandmanlsx
Ok I'm running into another problem now...i think .... i have Brian tooleys stage 4 truck cam in my motor now with ls6 valve springs. I've been doing some research and guys that have stock cams with ls6 valve springs are floating valve springs when they run more than 10psi of boost. So what I'm thinking is my cam might be too much for boost with ls6 valve springs? Does anyone have any input or knowledge about my cam and valve springs with boost? Cam Specs are 224/230 .553/.547 111+2
I would have used some dual valve springs for safety, that's what I did on my build. I believe ls6 springs are good until around .550 I would get some dual springs.

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