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#1
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V8 Clutch Fork Spring Extension Rod
Does anyone with a V8 have the correct Clutch Fork Spring Extension Rod on their bird? It is part number 9785884 and is number 11 in the attached image. Can't find the correct one and thought if I could get the correct length, I could make one from the 6cyl that is common available.
The parts guide shows spring 18 and extension rod 11 needed. I found a NOS Spring part number 3899021.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#2
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OK. See if this helps you. I thought maybe making one out of a nail. Mine is almost worn through, so I thought of making a spare.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. |
#3
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Wow Thanks, you are the first person that I have seen to have that part. Sure is tiny. Looks to be right at 1.75-17/8?
I found a Straight extension rod from a nova but after seeing yours it is way to long. I will make one from it.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#4
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Someone else earlier was asking about it and I sent them pics. The pics never got posted. I had the trans out, resealed and replaced the syncro hubs, replacing the clutch and got some pics. The arm (17) that attaches the spring to the frame on mine is bent, I wonder if my spring is the wrong one and too strong. I thought about welding a gusset and making it stronger.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. |
#5
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It's been a little hard finding a good spring. The repop ones seem sort of weak. The Correct spring is a 3899021 part number. The one Ames Sales is not even close and it is weak. OER looks more like the original. Here is a link to it. http://www.ebay.com/itm/3899021-OER-...dW8kWh&vxp=mtr
Here is a GM NOS http://www.heartbeatcitycamaro.com/s...return-spring/ Here is Ames https://secure.amesperf.com/qilan/De...A&web_access=Y I decided to get the GM spring hoping the tension is correct. So I thought I would make the extension rod to try to get it correct.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#6
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Quote:
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. Last edited by TedRamAirII; 04-19-2017 at 05:43 PM. |
#7
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Ted,
Yes that was me that you sent the pictures to. I got called out of town for work on my endless road mission and never got to posting the pictures. That said, I'm now thinking the best way to do this is to purchase one of the 6 cylinder or Chevy clutch springs and just cut off the end to make it shorter, then form the "C" on the other end. I haven't tried it yet, but I'm guessing the material would be of the correct thickness and you would be halfway done to start with. They are pretty cheap anyway. Check out this link on ebay for the Chevy version http://www.ebay.com/itm/1967-72-Cama...RYDhSm&vxp=mtr |
The Following User Says Thank You to gtobird For This Useful Post: | ||
#8
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That is what I'm going to do. I got a wire bender tool to help make it look better as I bend it. I be doing mine this weekend. I'll post my results.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#9
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Quote:
Thanks
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#10
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Thanks Ted, those pictures are helpful. It is indeed a short extension, much shorter than the 6cyl. extension. Looking at the exploded diagram, it would appear the V8 extension is supposed to be about the same length as the spring itself. But according to your pictures, the V8 extension is only about half the length of the spring itself. Interesting.
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#11
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Quote:
__________________
1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. |
#12
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I got the wire bender in and the straight Nova extension rod in today. I was able to make 4 pcs from the straight rod. I think I got the shape real close to Teds. Fit works great too. I think these will work good. Waiting on a new spring still to see how the final fit is.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#13
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Pretty close. The curve is more like around a 5/16" bolt. But those will certainly work.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. |
#14
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Used a 5/32 wire bender on this example. Looks a little closer but still not exact.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#15
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That looks pretty gosh darn good to me!
Formed from the Nova piece, right? |
#16
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Quote:
The first set was from the nova piece. It worked fine but this last try,I was tring to make it look more like it the original. I'll spray a little phosphate paint and it will look pretty good.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#17
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Getting better I think.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#18
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These are real close.
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68 400 HO 4sp Convertible Firebird400HO.com My 68 firebird 400 HO convertible Restoration Gallery |
#19
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Yes, good enough. The curve really does look like a the top of a question mark, ?Maybe you can make a few dozen and sell them to AMES. They dont list one.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. |
#20
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The bottom left looks the best as far as the shape of the hook.
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1968 Firebird 400 RAII M21, 3.31 12 bolt, Mayfair Maize. 1977 Trans Am W72 400, TH350, 3.23 T Top Everyone you will ever meet knows something you don't. Bill Nye. |
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