LT1 Steam Vent Tube Washers Needed - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums
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post #1 of 20 (permalink) Old 07-01-2009, 03:31 PM Thread Starter
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LT1 Steam Vent Tube Washers Needed

I need a replacement washer for the steam vent tube that attaches to the rear of the heads on a 96 LT1.

I've been doing a search but keep coming up empty. My local Chevy dealer can't get them.

Does anyone know where I can find one or, maybe a work around?

Thanks,

Jake

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My son, Ryan M. Cameron, graduated from West Point on 22 May 2010! He was commissioned as a 2nd Lieutenant and I pinned on his first pair of "Butter Bars" PROUDEST DAY OF MY LIFE!!

1996 Vette, 388 CID LT1 (3.75" X 4.060"), Eagle Internally Balanced Forged Crank, Eagle 6" Forged Rods, SRP Forged Pistons, CompCams XFI 467 Cam (230/236 @ .050), Scorpion 1.7 RRs, AFRs ported to 212 ccs (304 cfm @.600), Match Ported LT1 Intake, SVO 30# Injectors, BBK 58mm
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post #2 of 20 (permalink) Old 07-01-2009, 04:06 PM
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Hi Jake,

I used some oil drain plug washers that had a rubber insert stamped in the middle, I think the inside diameter was 14mm and they were less than one dollar each.

Mark

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post #3 of 20 (permalink) Old 07-01-2009, 04:21 PM
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gm carries the steam pipe and it comes with the washers. its around $80-100 iirc
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post #4 of 20 (permalink) Old 07-01-2009, 04:27 PM
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GM part number 10108689 You will need 4. Or you can try NAPA for some AC washers, or they might even list them for the LT1's.
post #5 of 20 (permalink) Old 07-01-2009, 04:34 PM
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NAPA part number 730-2922 has been posted on here as working.
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post #6 of 20 (permalink) Old 07-01-2009, 05:49 PM Thread Starter
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Thanks much for the info and parts number. I'll hit my Chevy parts counter tomorrow and see what story he has to tell me this time.

Jake

West Point ROCKS!

My son, Ryan M. Cameron, graduated from West Point on 22 May 2010! He was commissioned as a 2nd Lieutenant and I pinned on his first pair of "Butter Bars" PROUDEST DAY OF MY LIFE!!

1996 Vette, 388 CID LT1 (3.75" X 4.060"), Eagle Internally Balanced Forged Crank, Eagle 6" Forged Rods, SRP Forged Pistons, CompCams XFI 467 Cam (230/236 @ .050), Scorpion 1.7 RRs, AFRs ported to 212 ccs (304 cfm @.600), Match Ported LT1 Intake, SVO 30# Injectors, BBK 58mm
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post #7 of 20 (permalink) Old 07-01-2009, 11:10 PM
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The NAPA seals are about 1/4 the cost of the GM ones.
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post #8 of 20 (permalink) Old 07-02-2009, 11:49 AM
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Quote:
Originally Posted by CKJ View Post
GM part number 10108689 You will need 4. Or you can try NAPA for some AC washers, or they might even list them for the LT1's.
I used the a/c washers on mine. I haven't had any leaks.
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post #9 of 20 (permalink) Old 07-08-2009, 10:53 AM Thread Starter
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Quote:
Originally Posted by shoebox View Post
The NAPA seals are about 1/4 the cost of the GM ones.
NAPA threw me for a loop. I went there yesterday and talked with the sales guy who claims he's been with NAPA for over 20 years and has never seen washers like I told him about. I then showed him one of my old ones and his eyes glazed over.

I them gave him the GM part # 10108689 but he claimed he couldn't cross reference it, though he tried. I had him try 10108986 just in case I transposed the last four; still no good.

I then gave him a NAPA number 730-2922 and when he plugged it in, he said it comes of as an oil cooler washer kit and I'd need two of the kits because each kit only comes with ONE of the washers I need. $20 each!

So I left there pretty dismayed at his over 20 year experience with NAPA.

I headed over to O'Reilly's and Carl went right to a section in the back that had little boxes loaded with different size washers very close to the ones I need. The printout said they are oil pan drain bolt washers.

I bought a couple and spent hours last evening installing them. Getting the bolt to start threading into the head had me pulling my hair out, but, with the help of a neightbor, J.R., we finally got it in. The only way we got it to start was to wedge a tire iron between the firewall and the head of the bolt to apply pressure to the bolt as he tried starting it with a 15mm open end. That worked.

Now all I need to do is top off the anti-freeze and await the delivery of the re-programmed PCM from PCMFORLESS.

Thanks to all for the help with this.

Jake

West Point ROCKS!

My son, Ryan M. Cameron, graduated from West Point on 22 May 2010! He was commissioned as a 2nd Lieutenant and I pinned on his first pair of "Butter Bars" PROUDEST DAY OF MY LIFE!!

1996 Vette, 388 CID LT1 (3.75" X 4.060"), Eagle Internally Balanced Forged Crank, Eagle 6" Forged Rods, SRP Forged Pistons, CompCams XFI 467 Cam (230/236 @ .050), Scorpion 1.7 RRs, AFRs ported to 212 ccs (304 cfm @.600), Match Ported LT1 Intake, SVO 30# Injectors, BBK 58mm
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post #10 of 20 (permalink) Old 07-08-2009, 10:56 AM
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Did you do that with the engine in car?

If not, well you have nothing to whine about....

Nice man, glad to hear you got it figured out...



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post #11 of 20 (permalink) Old 07-08-2009, 11:05 AM Thread Starter
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Quote:
Originally Posted by ShowNoMercy View Post
Did you do that with the engine in car?

If not, well you have nothing to whine about....

Nice man, glad to hear you got it figured out...
Yep, the engine was in the car, hence the wedging of the tire iron against the firewall etc. It was the passenger side that had the tiny leak.

Next time I crack the case on a LT1 I'll be sure to install new washers while it's on the stand. Live and Learn.

Jake

West Point ROCKS!

My son, Ryan M. Cameron, graduated from West Point on 22 May 2010! He was commissioned as a 2nd Lieutenant and I pinned on his first pair of "Butter Bars" PROUDEST DAY OF MY LIFE!!

1996 Vette, 388 CID LT1 (3.75" X 4.060"), Eagle Internally Balanced Forged Crank, Eagle 6" Forged Rods, SRP Forged Pistons, CompCams XFI 467 Cam (230/236 @ .050), Scorpion 1.7 RRs, AFRs ported to 212 ccs (304 cfm @.600), Match Ported LT1 Intake, SVO 30# Injectors, BBK 58mm
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post #12 of 20 (permalink) Old 07-08-2009, 10:57 PM
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Quote:
Originally Posted by JAKEJR View Post
NAPA threw me for a loop. I went there yesterday and talked with the sales guy who claims he's been with NAPA for over 20 years and has never seen washers like I told him about. I then showed him one of my old ones and his eyes glazed over.

I them gave him the GM part # 10108689 but he claimed he couldn't cross reference it, though he tried. I had him try 10108986 just in case I transposed the last four; still no good.

I then gave him a NAPA number 730-2922 and when he plugged it in, he said it comes of as an oil cooler washer kit and I'd need two of the kits because each kit only comes with ONE of the washers I need. $20 each!

So I left there pretty dismayed at his over 20 year experience with NAPA.

I headed over to O'Reilly's and Carl went right to a section in the back that had little boxes loaded with different size washers very close to the ones I need. The printout said they are oil pan drain bolt washers.

I bought a couple and spent hours last evening installing them. Getting the bolt to start threading into the head had me pulling my hair out, but, with the help of a neightbor, J.R., we finally got it in. The only way we got it to start was to wedge a tire iron between the firewall and the head of the bolt to apply pressure to the bolt as he tried starting it with a 15mm open end. That worked.

Now all I need to do is top off the anti-freeze and await the delivery of the re-programmed PCM from PCMFORLESS.

Thanks to all for the help with this.

Jake

West Point ROCKS!
I was told that one kit of the NAPA seals had enough washers to do both sides of the steam pipe.
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post #13 of 20 (permalink) Old 07-09-2009, 05:29 AM
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If the guy said it only came with one of the washers you need then you need 4 kits.

I don't believe the 10108689's were no more than 7-9 bucks a piece from GM.
post #14 of 20 (permalink) Old 07-09-2009, 07:48 AM
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Quote:
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If the guy said it only came with one of the washers you need then you need 4 kits.

I don't believe the 10108689's were no more than 7-9 bucks a piece from GM.
They currently list for $7.80, wholesale $4.63. They used to be $3.
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post #15 of 20 (permalink) Old 07-09-2009, 10:50 AM Thread Starter
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Only one side was leaking, so I only needed two washers to fix my problem. The guy at NAPA pulled up a diagram of the 730-2922 kit and it shows what looked like three washers and an "O" ring. However, two of the washers were joined together, making sort of a figure 8. Each washer was connected to other by some type of spacing arrangement that placed the washers a couple of inches apart (visual estimate). I couldn't tell from the photo what the connecting piece was made out of - metal, gasket material, etc.

So since there was only one single/individual washer in the kit, I would have needed two kits and used the one, single/individual washer from each kit.

Anyway, my problem is solved by using the two washer kit I bought from O'Reilly's; cost of the washer kit was $4.00. They're installed, coolant topped off and system bled. My son took the car out for, what I later learned, a HIGH SPEED run and all's-well; no leak. More than one way to skin a cat. LOL

Thanks for all the feed-back and help.

Jake

West Point ROCKS!

My son, Ryan M. Cameron, graduated from West Point on 22 May 2010! He was commissioned as a 2nd Lieutenant and I pinned on his first pair of "Butter Bars" PROUDEST DAY OF MY LIFE!!

1996 Vette, 388 CID LT1 (3.75" X 4.060"), Eagle Internally Balanced Forged Crank, Eagle 6" Forged Rods, SRP Forged Pistons, CompCams XFI 467 Cam (230/236 @ .050), Scorpion 1.7 RRs, AFRs ported to 212 ccs (304 cfm @.600), Match Ported LT1 Intake, SVO 30# Injectors, BBK 58mm
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