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Knee deep into my Head / Cam install...

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Old Mar 17, 2007 | 04:50 PM
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Good to hear its not as hard as it looks, I love working on my car and have experience working on them so I think I will do my own swap too, the car can be down for how ever long it needs to be as I got 2 other beaters, keep us posted on it!!
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Old Mar 17, 2007 | 11:36 PM
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Originally Posted by Corvette Don
Good to hear its not as hard as it looks, I love working on my car and have experience working on them so I think I will do my own swap too, the car can be down for how ever long it needs to be as I got 2 other beaters, keep us posted on it!!
Well, I'm getting ready to go to bed, and sadly, the car won't be runnign until next week. I worked for about 7 hours today, and I'm just about there, but in a moment of what can only be described as sheer stupidity, I over-torqued one of my valve cover bolts and sheared it off. I have always double and tripple checked the instructions before proceeding with a step, but in this case, after torquing down the passenger side valve cover to 8ft lbs, I went to the driver's side, and had a flash-back to the water pump, and decided to torque the bolts down to 11 and then 22ft lbs in sequence. The first one I tried to torque down from 11 to 22 sheared off. Man, I about vomited. So, tomorrow, I'll tap it out, and Monday I'll hopefully pick a new bolt up from the stealership. Other than that, I'm about 2" away from being done.

Surprisingly, the installation of everything went very well, and it wasn't as scary as I thought. LS1howto.com's instructions walk you through every last step. They cannot, however, save you from your own stupid mistakes. Fortunately, they make tools that can though...

I'll be back with a sound clip once I get her up and running Monday or Tuesday (hopefully).
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Old Mar 18, 2007 | 10:34 PM
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I'd never be able to sleep being that close.

Good luck, interesting thread!
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Old Mar 18, 2007 | 11:27 PM
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to being almost there
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Old Mar 19, 2007 | 01:21 AM
  #45  
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Sounds like you're pretty far along... but I'll still give you a few tips that weren't mentioned here.

1. Seal your knock sensors w/ red RTV so you can hose off your motor w/o worry of water intrusion.

For the crank pully:
1. Use a little anti-seaze on the crank snout to help it get started
2. Get the pulley install tool from LS1tech to make it ultra easy
3. Key the pulley so you don't have to ever worry about it backing out
(GMs superhuman torque values and odd procedure is simply b/c they're using an interference fit, once key'd the pulley can never rotate off)
4. Use loc-tite one pulley bolt


I put my cam in a few months back... wasnt' too bad at all
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Old Mar 19, 2007 | 02:24 PM
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Originally Posted by Ikester
whos doing your tune?
Sorry for the delay in getting this answered... I have had some nagging concerns (read broken bolts) diverting my attention. I have an appointment with MC Racing in Shawnee, KS on 4/23. Yeah, they were 6 weeks out when I called.

Update: the broken bolt has been removed, and Fred Beans is overnighting me a bolt to arrive tomorrow. In other news, the brackets that came with my LG Street series headers were not working well; the first one stripped out on me. When I called LG to ask them how hard to torque them down, they told me the ones they sent are pretty chincy, and they insisted on sending me a full set of their race series brackets. They are supposed to be here tomorrow. That's pretty good customer service, although, I wonder why they are sending out the chincy ones to begin with. I have four of the six brackets attached. Depending on how they hold up, I may or may not replace them with the new ones.

My tentative schedule as of now is to get the fluid levels ready tonight, and be ready to put the valve cover on tomorrow night. I'm keeping my fingers crossed that my neighbors will be assaulted with the roar of a beast in the latter hours of the evening tomorrow night...
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Old Mar 19, 2007 | 02:40 PM
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I think you have consumed your quota of stripped/broken bolts on this project. If it happens again, we'll have to fire you.
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Old Mar 19, 2007 | 03:05 PM
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Originally Posted by Jim Taylor
I think you have consumed your quota of stripped/broken bolts on this project. If it happens again, we'll have to fire you.
I know, isn't it terrible (and embarrassing)? I'd be morbidly embarrassed, but for the fact that I'm a fairly green mechanic. Prior to this, I hadn't really done much wrenching on this, or any car. I can blame the cam retainer plate incident on a crappy torque wrench, but the latest debacle was a pure brain fart.
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Old Mar 19, 2007 | 07:23 PM
  #49  
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Originally Posted by kilrb
I'm keeping my fingers crossed that my neighbors will be assaulted with the roar of a beast in the latter hours of the evening tomorrow night...
Mine are pretty cool with the late night roar of a crovette engine, especially if i let them know ahead of time they sometiomes come out to see what I have accomplished, I have cool neighbors.

Good luck
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Old Mar 19, 2007 | 08:26 PM
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Originally Posted by kilrb
I know, isn't it terrible (and embarrassing)? I'd be morbidly embarrassed, but for the fact that I'm a fairly green mechanic. Prior to this, I hadn't really done much wrenching on this, or any car. I can blame the cam retainer plate incident on a crappy torque wrench, but the latest debacle was a pure brain fart.
You're killing me with the waiting Do you *really* need valve covers to fire it up?

Anyway, fantastic write-up, very inspiring! I'm up for doing my H/C in the summer.
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Old Mar 19, 2007 | 10:04 PM
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Originally Posted by Watchful
You're killing me with the waiting Do you *really* need valve covers to fire it up?

Anyway, fantastic write-up, very inspiring! I'm up for doing my H/C in the summer.
I know I am waiting too, I am just inches away from ordering a cam package!!! Let us know!!
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Old Mar 20, 2007 | 02:40 AM
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WOOT! put my cam in tonight.... gonna do the heads and entire car (it seems) reinstall tommorrow. Its not as bad a job to do as it seems!
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Old Mar 20, 2007 | 08:44 AM
  #53  
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Originally Posted by GreyGT-C
WOOT! put my cam in tonight.... gonna do the heads and entire car (it seems) reinstall tommorrow. Its not as bad a job to do as it seems!
Your making me look bad here! Two weeks vs. two days...
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Old Mar 20, 2007 | 09:17 AM
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Originally Posted by kilrb
Your making me look bad here! Two weeks vs. two days...
You ain't got nothing to fret over - I started my H/C swap on New Years, and I just finished everything up last weekend.
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Old Mar 20, 2007 | 11:15 AM
  #55  
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<------- just quit my job 2 weeks ago.. got nothing to do but tinker on the car. And i've been a helicopter mechanic for the past 16 years.... that helps a lil i guess.
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Old Mar 21, 2007 | 09:14 AM
  #56  
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Default At long last!

I received my bolts yesterday, and got everything finished up. A local forum member by the name of nwdanner dropped by to help me finish up the exhaust (thanks Neal), and video taped my startup. Fortuantely, everything fired up without any explosions, and my oil pressure came up within a few seconds to 40psi, but as it idled, the pressure came down within a couple of minutes to around 20psi. The car didn't throw any check engine lights, or anything, but it worried me, so I shut it down. I changed the oil pump out to an LS6 pump, and I was very careful not to damage the O-ring, so I'm not sure what's causing the pressure drop. I'll be doing some research to figure out where to go from here... Other than that, the car idled very well, and I was pleased that the exhaust wasn't really loud, and the lope wasn't anywhere near as bad as I thought it would be. Anyway, without further delay, here's the first startup video with a little tail-pipe action. I'll post back once I figure out what I'm going to do to address the oil pressure issue...

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Old Mar 21, 2007 | 10:45 AM
  #57  
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Originally Posted by kilrb
I'll post back once I figure out what I'm going to do to address the oil pressure issue...
I'm glad I had a chance to meet a fellow CF member and offer some help! You've come a long way with this project kilrb, jumped some very high unexpected hurdles, and pretty much blurred the "green mechanic" title you had given yourself. Great job! Once you get everything ironed out, it's going to feel like a totally different car!

I was amazed that it started up so quickly and idled without any issues. A definite sigh of relief! Don't sweat the "sewing machine" effect, every H/C car I've been around has it. It's also more pronounced when the car is sitting in a garage, where the sound can echo around. Once you get it outside that sound will be diminished.

As for the oil pressure issue, my past experience (and I'm no expert by any means) with LSx cam swaps leads me to believe it's the o-ring issue. Given the pressure sender reported ~40psi for a few seconds at initial startup, I believe the oil sender is not the culprit. You didn't have to shim your oil pump for the new timing chain assembly, so there's no worry about a shim being reversed and partially obscuring the pump output port.

If you end up tearing back into it, let me know and I'll lend a hand. I know how frustrating issues like this can be, and having help can make all the difference.

Keep us posted!
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Old Mar 21, 2007 | 10:55 AM
  #58  
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The pressure dropping is a sign that the o-ring did not seat correctly or the pump is not seated properly.

My buddy Joe (HPADDICT) ported his own LS4 pump... had fine pressure at startup, but as he was driving the pressure started to fall.

He ended up putting a new untouched LS4 pump in and a new o-ring... now all is well.

That damn o-ring and putting my LS4 pump is was the most nerve racking part of the whole process.

Good luck... but really all you can do is start taking the front end apart and re-do the o-ring.
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Old Mar 21, 2007 | 11:13 AM
  #59  
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Can anyone give me any guidance on the procedure for getting to the O-ring? I'm not sure how much of the removal of parts I did was necessary for inserting the cam vs. removal of the crank pulley... I'll obviously have to remove the water pump and the steering rack, but will I have to remove the radiator as well? If it's just the rack and water pump, it doesn't seem that bad. I'm sure I can get things apart quite a bit faster now that I know what I'm doing.
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Old Mar 21, 2007 | 11:19 AM
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Wow, I think I just figured out where I went wrong... While re-reading the instructions on the oil pump install, I realize it states that you should place the o-ring on the pickup tube. I am 99% sure that I took the O-ring out of the old pump, and pushed it up into the new pump. That's probably why it didn't seat right.
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