Trying to break into 11's
#201
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Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: Trying to break into 11's
Right, i also read you dont need screw ins till 600 seat pressure on your springs. But that kit, i read alot of people talking about mr. gaskets.
Sorry for maybe a dumb question, but why are those safe to do with the heads on? Because they have the right stud length? or what? Would i still have to tap it before installing? And if so then wouldnt it be possible for the shavings to go down into the heads?
Sorry for maybe a dumb question, but why are those safe to do with the heads on? Because they have the right stud length? or what? Would i still have to tap it before installing? And if so then wouldnt it be possible for the shavings to go down into the heads?
The way I would do it is have a shop vac running and being held right next to the drill side to suck up any shavings immediately before they get where they aren't supposed to be.
LOL @ 600 seat pressure. That is like solid roller valve open numbers. Seat pressure on my afr 180's is 130lbs and open (.600 lift) is around 350bs IIRC, I'd have to look at the paperwork from when I had the valves in my heads done, they spec'd the springs for me.
Last edited by 3rd gen Will; 02-02-2012 at 06:09 PM.
#206
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Re: Trying to break into 11's
Try buyin some .015" or .030" shims and shimming the springs install height up alittle bit more. This will give you more seat pressure. Another 10-15lbs will do which should be around .030-.045" worth of shim depending on spring rate. What lift are those springs good for? If .600, shimming .030" will give you .570" lift. Should give you enough for that cam with 1.5 rockers. If not, try a different spring and return those Alex ones. I still like around 150lbs seat pressure with XE rollers
Do you have screw in rocker studs with those heads?
Do you have screw in rocker studs with those heads?
#213
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Re: Trying to break into 11's
It has press in studs, but they are thicker then the average press in studs from what it looks like. He redid everything inside the heads. But with the alex's parts i have .700 lift, so would a .045" shim put me around 145-150 closed seat then?
And yeah i know i should do screw in, but i might stick with the press in, because ive read in the "Vortec head Guide" on nastyz28 that vortec heads that are 98 and later can handle up to .600 lift before they come out(and mine are 99).
You can have a .600" spring with 360lbs open pressure or 1000 lbs of pressure.... huge difference.
#216
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Re: Trying to break into 11's
I've replied to your thread and questions SEVERAL times, pointing out advice from years and years of racing. Sorry you don't like what I had to say and are doing things backwards. I've realized you can do them once right or several times wrong and spend more money. Sorry for ruining the internet and if you think I'm being "mean" online you really wouldn't want to see me in person, it only gets way worse. I guess at 17 when I had to save an extra month to get into the machine shop for screw in studs that would have been a better idea then pulling out several push in ones, because "I didn't have the money at the time" either. You've been given advice at least 15 times that I can count and dismissed it immediately. So if anyone is ruining the internet, hop into the mirror and take a look. I get a few PM's a week looking for help and I help them all, they do what I say then respond back with improvements. Guess I'll quit posting so the young bucks can give it a shot with what they read in a magazine.
#218
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Re: Trying to break into 11's
IT'S NOT THE LIFT THAT PULLS THE STUDS OUT! IT'S SPRING PRESSURE!!!!
find me 3 people (on the interwebz or otherwise) that was DUMB enough to put that big of a cam/that high pressure of springs on press in studs.
you're the one saying you don't have the money to do this or that, yet you're picking parts that REQUIRE the things we say for LONGEVITY'S sake.
steve is sarcastic (part of being a wise guy probably), but he's extremely knowledgable and helpful, until folks start being dumb, then he unleashes the sarcasm.
every last question you've asked, and we've answered, you've dismissed the answers and said "well i'll do it this way instead". unless it's been Justin that's said it. get off the whole "i'm 17" thing and get with the program. this stuff, if not done right, will cost you a CRAP ton of money. save up another week or two and get things done the right way. you running stock rockers still too?
i can remember living on $100-150 a week, and having to pay rent too. i worked multiple jobs and did side work to be able to afford stuff to go racing with, so don't think i "don't know what it's like".
find me 3 people (on the interwebz or otherwise) that was DUMB enough to put that big of a cam/that high pressure of springs on press in studs.
you're the one saying you don't have the money to do this or that, yet you're picking parts that REQUIRE the things we say for LONGEVITY'S sake.
steve is sarcastic (part of being a wise guy probably), but he's extremely knowledgable and helpful, until folks start being dumb, then he unleashes the sarcasm.
every last question you've asked, and we've answered, you've dismissed the answers and said "well i'll do it this way instead". unless it's been Justin that's said it. get off the whole "i'm 17" thing and get with the program. this stuff, if not done right, will cost you a CRAP ton of money. save up another week or two and get things done the right way. you running stock rockers still too?
i can remember living on $100-150 a week, and having to pay rent too. i worked multiple jobs and did side work to be able to afford stuff to go racing with, so don't think i "don't know what it's like".
#222
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to break into 11's
I had to wait to check when i got home. I got home and checked and they threaded out a little. So shoulderless.
#226
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to break into 11's
I was checking the clearance as i rotated the cam and my guides have been machined down, but with the original retainers i had on there i had .175 clearance. Then with the alex's parts retainers i had .268 as clearance. So they do increase it almost by a full .100 which would be on stock vortecs raising the max lift from .450 to .550 like they said.
The seat pressure isnt too bad either, i am running a big cam(alot of guys here think its too big, but only time will tell) so the seat pressure helps, im sure they will be perfect for what ever cam you are running.
Also, they were great to deal with, as soon as i ordered them, alex emailed me 6 minutes later asking me if i was sure i ordered the right parts, and if i was he'd ship them out the next morning.
I'll post some pictures tomorrow to help you out even more, i hope that helped!
#228
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to break into 11's
That, and the locks that he includes are different as well, ill post a picture tomorrow that shows more accurately what the difference between his locks and others are.
Last edited by GreggymacZ28; 02-29-2012 at 09:42 PM.
#229
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to break into 11's
IT'S NOT THE LIFT THAT PULLS THE STUDS OUT! IT'S SPRING PRESSURE!!!!
find me 3 people (on the interwebz or otherwise) that was DUMB enough to put that big of a cam/that high pressure of springs on press in studs.
you're the one saying you don't have the money to do this or that, yet you're picking parts that REQUIRE the things we say for LONGEVITY'S sake.
steve is sarcastic (part of being a wise guy probably), but he's extremely knowledgable and helpful, until folks start being dumb, then he unleashes the sarcasm.
every last question you've asked, and we've answered, you've dismissed the answers and said "well i'll do it this way instead". unless it's been Justin that's said it. get off the whole "i'm 17" thing and get with the program. this stuff, if not done right, will cost you a CRAP ton of money. save up another week or two and get things done the right way. you running stock rockers still too?
i can remember living on $100-150 a week, and having to pay rent too. i worked multiple jobs and did side work to be able to afford stuff to go racing with, so don't think i "don't know what it's like".
find me 3 people (on the interwebz or otherwise) that was DUMB enough to put that big of a cam/that high pressure of springs on press in studs.
you're the one saying you don't have the money to do this or that, yet you're picking parts that REQUIRE the things we say for LONGEVITY'S sake.
steve is sarcastic (part of being a wise guy probably), but he's extremely knowledgable and helpful, until folks start being dumb, then he unleashes the sarcasm.
every last question you've asked, and we've answered, you've dismissed the answers and said "well i'll do it this way instead". unless it's been Justin that's said it. get off the whole "i'm 17" thing and get with the program. this stuff, if not done right, will cost you a CRAP ton of money. save up another week or two and get things done the right way. you running stock rockers still too?
i can remember living on $100-150 a week, and having to pay rent too. i worked multiple jobs and did side work to be able to afford stuff to go racing with, so don't think i "don't know what it's like".
"The rocker studs are in there very tight compared to the old days and they generally will not move . My first set of Vortecs are still driving around town in a buddys car with .530 lift and 120 pounds on the seat with zero movement. Keepers with a raised grove for more clearance MAY interfere with the self aligning rockers most guys use with Vortec heads so Im not keen on them , cutting the guides solves that problem anyway. -Doug"
Granted i do have shoulderless studs, i just wanted to let you know that there are other "DUMB" people out there i guess
#230
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Re: Trying to break into 11's
http://forum.grumpysperformance.com/...hp?f=52&t=2746
Well, to be honest its your call, but i've seen a few places say over 300lbs open pressures, lift over .475 and 6000 rpm and higher, you should have screw in studs.
Some guys claim to see stock spring pressures pull studs out! So its risky, especially with that cam.
But if you have the screw in studs now, thats a good thing. SHould be set to go.
Well, to be honest its your call, but i've seen a few places say over 300lbs open pressures, lift over .475 and 6000 rpm and higher, you should have screw in studs.
Some guys claim to see stock spring pressures pull studs out! So its risky, especially with that cam.
But if you have the screw in studs now, thats a good thing. SHould be set to go.
#231
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to break into 11's
Yeah i have the shoulderless now.
But yeah i read everywhere too that anything over .475 lift and around 300 seat will pull the studs. But i hadnt ever heard of anyone saying that theirs had pulled out of their vortec heads, and alot of guys are doing it with pin in. It's not my problem anymore so it doesnt really matter to me! I just was curious to see if anyone was running a high seat pressure and press in vortec heads, and there are a few on nastyz28. They could just be the lucky ones though!
But yeah i read everywhere too that anything over .475 lift and around 300 seat will pull the studs. But i hadnt ever heard of anyone saying that theirs had pulled out of their vortec heads, and alot of guys are doing it with pin in. It's not my problem anymore so it doesnt really matter to me! I just was curious to see if anyone was running a high seat pressure and press in vortec heads, and there are a few on nastyz28. They could just be the lucky ones though!
Last edited by GreggymacZ28; 03-01-2012 at 05:24 AM.
#232
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to break into 11's
lol in all seriousness. I was very young when this thread was first made, I find it amusing to see some of the things I was saying. Thanks for all of the help from everyone and dealing with some of my redundant and dumb questions.
I have some more updates that are coming on my car this winter I will keep everyone posted!
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