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#1042128 - 08/05/16 10:31 PM 305 Valve seals. Average cost???  
Joined: Jul 2014
Posts: 93
WESTWOODSS Offline
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WESTWOODSS  Offline
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Joined: Jul 2014
Posts: 93
WESTWOOD MA
I have an 85 SS with 60 K original miles on it. It smokes at start up. Runs beautiful. Can someone tell me the average cost to have the job done? I am not doing it myself so I would like a ball park on a shop.

#1042216 - 08/09/16 12:47 AM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Dec 1999
Posts: 11,911
86ttop Offline
20+ Year
86ttop  Offline
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Brooksville, Fl
While I am not a shop or interested in doing the work, there is little room around the engine in the SS cars and the work is tedious, my guess would be $1000.00, good luck.


Leo Paugh
It's not an attitude, it's just the way I am.
POW*MIA
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#1042221 - 08/09/16 02:25 AM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Jan 2000
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mmc427ss Offline
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mmc427ss  Offline
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Joined: Jan 2000
Posts: 5,478
Pottstown, Pa
The cost of parts would be cheap, seals, valve cover gaskets, maybe new plugs, oil and filter, a hundred bucks tops.

Removing both valve covers can be timing consuming on an SS, removing the plugs to pressurize each cylinder for spring removal x 16, R&R everything, adjust the valves, all takes awhile. If you are lucky enough to know someone capable to "assist" you at home the job can be done on a weekend. Having the necessary spring compressors, an adequate air compressor/adapters and enough hand tools are the basic requirements.

A shop would be minimum 6 hrs if the guy knows what he's doing, and doesn't run into any snags. Times the hourly shop rate, plus the parts gets you into a ballpark figure. Guessing $500 would be a good price, and no smoke from the tailpipes. 90-100 an hour not unheard of at dealerships here.

Twice I've had the valvetrain apart, once for keeper replacement, the other time a spring upgrade. Having A/C, cruise, AIR system, EGR, and other obstacles makes for a long day. Various styles of spring compressors are available, some cylinders require a different style due to space limitations.

All that said, if the DIY isn't an option shop around for a competent mechanic/shop, ask other Chevy guys where they would go. Stop in and inquire before commitment. Today it's hard to find someone who knows the SBC, been 20 years for OBDII. It's not a difficult job for "the mechanic" willing to do it for reasonable, just take time to do it right.
Bob

#1042239 - 08/09/16 12:02 PM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Jan 2002
Posts: 1,275
basemonte Offline
15+ Year
basemonte  Offline
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Posts: 1,275
Old Bridge, NJ
2X on $1,000. Presently, the "seal" is actually an "O" ring looking thing that goes on the valve stem, below the keeper. It is a lot easier to replace them with a "on top of the guide" press-on seal.

#1042242 - 08/09/16 12:17 PM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Sep 2011
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LXXXIV SS Offline
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LXXXIV SS  Offline
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Posts: 1,542
Lower Peninsula, Michigan
3x on the $1,000, and maybe even a little more. Labor rates around here are at $100 an hour whether it's the dealership or the local auto mechanic with a small shop.

Plus they'll nail you on the parts. Standard practice is to charge you 3 times whatever they pay for the parts. So if they pay $200, they charge you $600 for parts.

Keep in mind that if you bring in your own parts, they simply up the labor rate to what is called "Labor Rate 3" (for those who bring in their own parts).

If the car just smokes a little at startup, then quickly goes away, it's no big deal. If it's worse than that and you want the job done, you might want to consider turning it into a 'winter project" and doing it yourself. Most auto parts places like AutoZone, etc, will let you borrow the tools needed for free.

95% of the job is just getting everything out of the way.

#1042244 - 08/09/16 12:32 PM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
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FrankOC Offline
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FrankOC  Offline
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Joined: Feb 2006
Posts: 1,335
Cape Cod, MA
I've done this a couple times. As everyone has stated, the parts are cheap but the job is time consuming. My 84 has 30k miles, I'm sure the seals are brittle and broken and should be done.


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#1042249 - 08/09/16 02:41 PM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Apr 2014
Posts: 529
mainer Offline
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mainer  Offline
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new gloucester, ME
A good shop it shouldn't cost more than $600. Flat rate for the job is only 4 to 5 hours and parts marked up to full boat are still less than $100 . It's not a hard job at all , here watch this guy do it https://www.youtube.com/watch?v=OsGqmOQus6Y

#1062151 - 06/03/19 11:33 PM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Jun 2001
Posts: 1,516
markg Offline
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markg  Offline
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nj
i just watched the video above and I was wondering if why you need to remove the oring once its compressed?cant you remove the keepers then the spring and then remove the oring?also I rented one of those compressors with the screw in the center and the 2 arms that catch the bottom of the spring.can I install the new orings before I mount this type of compressor?there is not as much room with this type and I think it would be hard to put it on after its compressed.


86 ss 86 cl,330hp GM vortec cratemotor-700-r trans worked,ford 9.5 inch rear with 3-50s,custom 3 inch exhaust with flowmasters.
#1062155 - 06/04/19 01:34 AM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Dec 1999
Posts: 11,911
86ttop Offline
20+ Year
86ttop  Offline
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Joined: Dec 1999
Posts: 11,911
Brooksville, Fl
Yes, I removed the o ring seal after removing the spring/compressor and install the new one before reinstalling the spring/keepers, you must be very careful or you'll cut the o ring when releasing the compressor. I used the one that grabs the spring from down low and at the top and it just drops back on and when you have to be careful is when you are releasing the spring after inserting the keepers, Good luck!!


Leo Paugh
It's not an attitude, it's just the way I am.
POW*MIA
You are not forgotten
If things improve with age, I must be approaching magnificent. thumbs
#1062170 - 06/04/19 07:10 PM Re: 305 Valve seals. Average cost??? [Re: WESTWOODSS]  
Joined: Jun 2016
Posts: 360
ChasUno Offline
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ChasUno  Offline
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Bradenton, FL
My SS does the smoke on startup, and also when pulling away if sat at stop lights for more than a few minutes. Getting tired and a little embarrassed at doing a Blue Angels impersonation at stop lights, plus when they turn red as I approach I think "please don't stay red for too long"!

I understand that the original seals were little more than o rings, and that many recommend fitting "umbrella" style seals instead. Can anyone give me a link to these umbrella seals, the part number, and maybe that I can buy from a nearby AutoZone?

Also, is there one spring compressor tool that can do all 16 springs? I don't mind that it would take longer as I plan on doing the seals in stages.

Been putting off doing the seals for too long, and really need to get them sorted for once and for all!


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