How do you know if your springs are too strong for your fiberglass hood?

Mopar Body and Trim

  1. MRGTX

    MRGTX Well-Known Member

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    This may seem like a dumb question...if the structure of the hood is excessively stressed by the force needed to close the hood against the springs, your springs are too strong...right? Is it that simple? Assuming the hood isn't going to just crack and shatter right away, how do you know if the stress is enough to be a concern over time?

    I have yet to bolt on my fiberglass hood and I'm realizing that there might be a middle ground to worry about and I'm not sure if I know how to identify it.

    Based on the suggestion from AAR Fiberglass, I'm going to give my stock springs a try. Being the originals (and likely weakened over the decades) they suspect that they might be ok for use with the light weight hood. This would save a huge amount of hassle but I'm skeptical...as everything I do on a car seems to be at least 1.5x as hard and 2x as expensive as I anticipate.

    Maybe I should just ask; Has anyone been successful with stock hood springs?

    I sure won't be able to buy another one if I screw this up so any advice is welcome here.
     
  2. toolmanmike

    toolmanmike Moderator Staff Member FABO Gold Member

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    Yes, stock springs are too strong. Use the search function here. There are many threads about the subject.
     
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    • memike

      memike Super Moderator Staff Member FABO Gold Member

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    • dukeboy_318

      dukeboy_318 FABO Gold Member FABO Gold Member

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      my advice from experience is to ditch the stock springs. Either get the lightened ones for fiberglass or do the strut conversion like Mopar Tim did.
       
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      • brian6pac

        brian6pac Well-Known Member

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        I had a AAR Cuda and if the car was in the sun all day the hood would bow up in the middle. after a while I just took the springs off and left it in the sun and the bow went away so I just left them off, If I was at a show or working on it I just put the springs back on because you could just pull them by hand they were that weak, but you can't do that with the A body's. I would just leave them off.
         
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        • rumblefish360

          rumblefish360 I have escaped the evil Empire State! FABO Gold Member

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          I also have a 6 pack AAR hood on my ‘73 Cuda with the so called matched hood springs. To be honest, I still think there a bit stiff when closing the hood.

          Car is garages, zero sun. No bow, it’s been about, I guess 4 or 5 years of ownership of the hood.
           
        • jos51700

          jos51700 Green Bearing thread connoisseur

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          If imma save weight with a glass hood, imma save weight with a spring toss
           
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          • str12-340

            str12-340 FABO Gold Member FABO Gold Member

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            This is on an A-body, right? You can't just pop hood springs on and off, cause they're down under the fender! Somebody here makes light springs to replace the originals - I got them for my race car 6-8 years ago but can't find the info.
             
          • barbee6043

            barbee6043 barbee 6043 FABO Gold Member

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            I have had 6-7 AAR and TAs decades ago. The factory used a smaller than stock spring. They used that for a reason. The factory hoods were well made too.
             
          • loganscuda

            loganscuda DON’T reMember

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            I tried the stuck springs....way too stiff have not gotten the light weight ones yet. But a hood prop is a pain in the butt, also seems the spring for hood pop up is too strong also, it would push the hood over to one side, so I removed that also. Do not know what to do about that problem yet.
             
          • dukeboy_318

            dukeboy_318 FABO Gold Member FABO Gold Member

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            Ford explorer hood struts....
             
          • Jimacuda

            Jimacuda Well-Known Member

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            if your willing to try it...kind of a pita...
            I unwound the stock springs 1/2 turn.
            takes about 14-16 lbs to pull down one hinge after modifying.
            did it for when the 'glass hood goes on.
             
          • MRGTX

            MRGTX Well-Known Member

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            Thanks for the input, guys!

            With the idea that someday, I might want to reinstall the stock hood (for Pebble Beach or whatever :D ) , I'm hesitant to alter the stock springs. I called around to the local boneyards and all of the K-Cars are long gone. Carparts.com is a roundup of a pretty extensive network of junkyards and they didn't have a listing either.

            I'm leaning toward just installing a prop rod and getting on with my life.

            Is there a generic kit that will do the trick (from Dorman, etc?) Can anyone share a pic of their prop rod install?

            Also, it looks like you can access the springs inside the fenders with the door open. Is there any concern about popping off the retaining clip and sliding them off of the post? It seems like it could go "bang" and do some damage inside the fender or injure your hand, etc.

            As always, thanks for any info.
             
          • 1969cuda

            1969cuda Well-Known Member

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            I bought a set years ago from a seller over on Moparts. They still work great. I wish I could remember his name. I find hard to believe that there is no one out there making them.
             
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            • MRGTX

              MRGTX Well-Known Member

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              It really seems like nobody is making them. I found a generic spring that looked like it could fit on Summit and I called their tech support to see if I could learn the specs. They said that it probably wouldn't work and that he would see if there was one made for our A-body application. I was on hold for 10 minutes and he came back with the "Happee Feelnigs" email address that he probably got from this forum.

              I'll take a look over at Moparts before I do anything drastic :D
               
            • dukeboy_318

              dukeboy_318 FABO Gold Member FABO Gold Member

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              Look up the strut conversion on here. It’s easy as all get out to do and cheap.
               
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              • loganscuda

                loganscuda DON’T reMember

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                There is a member on here that makes the lightweight springs. I will try and search for him
                 
              • loganscuda

                loganscuda DON’T reMember

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                @dart67 makes or modifies stock springs for fiberglass hoods
                 
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                • MRGTX

                  MRGTX Well-Known Member

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                  I sent a PM to @dart67 who was kind enough to reply even though he’s not the guy who sells them.
                   
                • loganscuda

                  loganscuda DON’T reMember

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                  Did he say who did? Sorry about that I will find out.
                   
                • loganscuda

                  loganscuda DON’T reMember

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                  Found him. Not his screen name you will have to email. Dennis has the lower tension hood springs for A Bodies. Just ordered my set yesterday for my 67 Barracuda!!
                  60.00/set His e-mail is : happee_feelings@yahoo.com. Nice guy!!!!
                   
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                  • loganscuda

                    loganscuda DON’T reMember

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                    @Raaf69 did you buy the light weight springs. Who is the member and how did they work out for you.
                     
                  • jos51700

                    jos51700 Green Bearing thread connoisseur

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                    K-Cars, most likely.

                    Tossing your stock springs in a fire for an hour will probably create you some nice low-tension springs.
                     
                  • barbee6043

                    barbee6043 barbee 6043 FABO Gold Member

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                    Can you still order the small, low tension springs for AAR Cudas??
                     
                  • loganscuda

                    loganscuda DON’T reMember

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                    I used jeep Cherokee trunk shocks on my hood
                     
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