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What is correct and what is not?
Thanks
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This is correct Link I guess anything else is wrong.
Last edited by HaroldB; 07/14/15 04:30 PM.
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A smaller diameter yellow spring goes inside the blue spring as well. I'm not 100% on the color but the carbs came with 2 springs.
Last edited by Gus68; 07/14/15 05:23 PM.
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________
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Gus have you seen documentation on that inner spring? I have not seen evidence of it? It is not in the service manual or the parts list. It only shows the outer spring. There is a different yellow for 2 barrel carbs.
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Gus have you seen documentation on that inner spring? I have not seen evidence of it? It is not in the service manual or the parts list. It only shows the outer spring. There is a different yellow for 2 barrel carbs. Not seen it in doc but seen it in many many quadrajets. What does Jim have?
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________
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Yes I've seen a many 2 spring set up but not factory. None of the 68's documentation from any of GM vehicles I've seen has a duel spring set up. True I feel it is safer to run two and many have been added. But the books only show one. Here is a thread when I was questioning it. Jim replied in it. https://firstgenfirebird.org/forums/ubbthreads.php?ubb=showflat&Number=298395
Last edited by HaroldB; 07/14/15 06:00 PM.
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My stock 400 has the single spring. And it is grey, not blue:
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold  1980 T/A SE Bandit - Sold
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My stock 400 has the single spring. And it is grey, not blue:
Take another look. You have 2 springs. It's not blue because it's corroded now.
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________
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Another Source for the spring. Link They also have a small yellow one if you want it. - they do state - if you want more tension. link
Last edited by HaroldB; 07/14/15 06:54 PM.
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My stock 400 has the single spring. And it is grey, not blue:
Take another look. You have 2 springs. It's not blue because it's corroded now. Nope. Single spring. No corrosion.
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold
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My stock 400 has the single spring. And it is grey, not blue:
Take another look. You have 2 springs. It's not blue because it's corroded now. If you zoom in on the picture you can see the smaller spring inside of the larger spring. They occupy the same holes but there's two physical space Springs Nope. Single spring. No corrosion.
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I only see one spring and I did zoom in.
Maybe the heat has made the paint come off over the past 47 years or someone replaced it after the first 5-10 years?
Last edited by HaroldB; 07/14/15 08:44 PM.
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I only see one spring and I did zoom in.
Maybe the heat has made the paint come off over the past 47 years or someone replaced it after the first 5-10 years? Craig says it a shadow. Could be. But I have see the pair more than just the single. Perhaps it came out years later. I recall the sm dia spring made the carb held tight so idle speed was maintained. I believe the lg dia spring was for secondary's. IMO of course
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Last edited by Gus68; 07/15/15 12:24 AM.
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