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10-18-2008
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#11 |
 
Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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Re: LT5 Assembly Project
raising my hand from the back of the class.......I'd be right along side TomC taking notes & downloading stuff!
 Thanks for taking the time to ask and do this for us!   Tom
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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10-18-2008
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#12 |
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Join Date: Apr 2004
Location: Germantown, MD
Posts: 738
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Re: LT5 Assembly Project
Unless I become independently wealthy in the very near future, my plans for going deep inside of an LT5 are to watch you do it. With that said, I'd really appreciate the opportunity to watch and learn.
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10-18-2008
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#13 |
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Join Date: Sep 2008
Location: Vancouver
Posts: 224
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Re: LT5 Assembly Project
i shall make a peagan sacrifice to please the LT5 gods
so you may have good fortune during the project.  good luck buddy  Chris
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[SIZE=1]1993 Corvette ZR-1 #137, 1990 Yellow 6speed coupe, and 1991 6speed coupe.[/SIZE] |
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10-18-2008
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#14 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: LT5 Assembly Project
I am watching the LT5 training video right now, wondering WTF was I thinking.
This should be fun, I am going to start with some pics tomorrow of what I have and some of the issues I am facing with regard to repairs, etc. I picked up a set of ported LT5 heads, and the matching block. The block ingested a screw, so there is some damage to a few pistons, I think I will only need 1 liner and 1 piston. The heads are another story, they have 1 crossed threaded IH bolt, and they are ported alittle too much where the IH meets the head, so there is some welding warranted to make sure the IH seals properly. LGAFF 92 ZR1 #234 |
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10-18-2008
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#15 |
Join Date: Dec 2003
Location: McHenry, Il.
Posts: 6,607
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Re: LT5 Assembly Project
Soundz like a nice winter project. Maybe if you invite us we might swing by for a garage visit and some bench racing too boot. ???
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http://i119.photobucket.com/albums/o...9mcw/SIG-2.jpg http://i119.photobucket.com/albums/o128/wb9mcw/vcm.gif "The Budget should be balanced, the Treasury should be refilled, public debt should be reduced, the arrogance of officialdom should be tempered and controlled, and the assistance to foreign lands should be curtailed, lest Rome will become bankrupt. People must again learn to work instead of living on public assistance." - Cicero, 55 BC " We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution." - Abraham Lincoln |
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10-19-2008
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#16 |
Join Date: Jul 2004
Location: Kalamazoo MI
Posts: 1,753
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Re: LT5 Assembly Project
I still have to pull up the BS flag on the head bolts...
Who else here has worked on a LT5 and replaced the head bolts? just curious 
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JOHNNY P Currently own 90 ZR-1 #845 DRM 500 engine package 90 #226 Parts car Hit me up if you need anything. |
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10-19-2008
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#17 | |
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Guest
Posts: n/a
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Re: LT5 Assembly Project
Quote:
Re used the bolts in my 368 build. For the 402 it will either be studs or new bolts. |
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10-19-2008
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#18 |
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
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Re: LT5 Assembly Project
I can't remember how many times my head bolts have been reused.
 Also know a few other LT5's reusing head bolts more then once,they all run strong with no issues. I will take all those junk used head bolts you guys have.heheheheheh I will also call BS on this. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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10-19-2008
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#19 |
 
Join Date: Nov 2006
Location: dayton,ohio
Posts: 425
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Re: LT5 Assembly Project
Reused mine two years ago with no problems.
I can't find anywhere in the gm fmm where it says to replace them as it does for main and rod bolts. If I remember right they didn't have any taper in the middle section so they didn't look like torque to yield bolts to me.
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[FONT=Comic Sans MS][COLOR=red]"I wanna go fast!!"[/COLOR][/FONT] [FONT=Comic Sans MS][COLOR=#ff0000]-- Ricky Bobby[/COLOR][/FONT] Last edited by lbszr; 10-19-2008 at 03:13 AM. |
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10-19-2008
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#20 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: LT5 Assembly Project
OK here is the skinny on the block/heads.
Engine is out of 90 #702. I bought the heads, they were ported with a valve job. The short block has about 40K miles on, although it seems like it has more). Notice the port is siamesed, and althought the 2ndry port is over 36mm the primary port needs to be opened some. Also notice that the porting left little sealing surface area where the IH bolts on. Last edited by LGAFF; 03-02-2018 at 08:37 AM. |
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