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#1
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Front coil over conversion info. Tip
Someone may have already figured this out but I couldn't find any info on it. So I figured I would share. Might work on 1 st gen also not sure.
afco makes 2 conversion parts to bolt an afco coil over into the factory control arms on a 2 nd gen Ta. I had thought qa1 was the only bolt in. The bottom is a direct fit however I think some reinforcing will be needed on the lower arm where it bolts in just to be safe. See the pic below. The top is also a direct fit no drilling or changes. The pic below shows the adapter but I don't have the rubber grommets yet. Also they say to use washers for the snap ring wich I don't like so I am making an aluminum ring with a snap ring grove like the rod end has. I will post a pic when it is done Basically this kit would convert any set of coil overs to bolt right in to a 2nd gen car with no mods to the car or arms. I know it's not a big deal with tubular arms, but some classes don't allow frame mods or tubular arms. Not to mention they are $1.000.00. And have no performance advantage except a weight loss. This afco conversion vs my springs and shocks will save me about 18 lbs total. Plus the performance advantage. The upper control arm factory is 7lbs 2 oz the tubular is 4lbs 4oz so not much savings in weight and nothing in performance. The lower control arm is 15 lbs 3 oz factory and 9 lbs tubular so very minimal weight loss for a 1 k item.
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77 Trans Am All Steel, on 10" tires 8.30 @ 165 mph 3,380 LBS Mat it! Spray it! Chute it! Just another 8 Second Pass! |
The Following 2 Users Say Thank You to Ray Cox For This Useful Post: | ||
#2
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Top mount
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77 Trans Am All Steel, on 10" tires 8.30 @ 165 mph 3,380 LBS Mat it! Spray it! Chute it! Just another 8 Second Pass! |
The Following User Says Thank You to Ray Cox For This Useful Post: | ||
#3
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There are a few other little tricks and mods to it I will take some pics as I get them done.
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77 Trans Am All Steel, on 10" tires 8.30 @ 165 mph 3,380 LBS Mat it! Spray it! Chute it! Just another 8 Second Pass! |
#4
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A lot of people have found that there is not enough stored energy compared to a coil spring and the car will work better with a coil spring then the coil over.
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First Pontiac powered street car in the 7's 7.940@170.84. 3460#s |
The Following User Says Thank You to LiL Jack For This Useful Post: | ||
#5
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1st Gen - stock bottom CA's
Not mine, but I did the same idea.
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79 Trans Am WS6 71 Formula 72 Formula 71 Firebird 69 Firebird |
#6
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That's interesting.
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77 Trans Am All Steel, on 10" tires 8.30 @ 165 mph 3,380 LBS Mat it! Spray it! Chute it! Just another 8 Second Pass! |
#7
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Im changing over from the qa1 coil over sping to a conventional Santhuff spring right now. you need a really good shock to control it though.
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540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046 jet First ultra street/ultimate street NOS car to get into the 4's! 1.079 4.559 153.23. 3100 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! T2TTFMF! Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing |
#8
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I am trying to get in touch with roades to get his help but I think he is too busy. I have Afco's for it. I don't really have a ballerina budget like little jack for the santhuff shocks but I could probably do santuff springs. Dwight said he is doing that also.
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77 Trans Am All Steel, on 10" tires 8.30 @ 165 mph 3,380 LBS Mat it! Spray it! Chute it! Just another 8 Second Pass! |
#9
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How did you make out?
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DOC'S TA Turbo 535, CV 1 heads. Built by Cerralli Competition Engines Tenth Anniversary (Van Nuys) restored. Tenth Anniversary Barn Find (Norwood) Both 4 speeds! |
#10
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Quote:
I have been saying that for a long time and not just because of the stored energy thing. front coil overs, to me, are very application specific. The only thing I actually like with them is the simplicity of ride height adjustments in the front, but agree they are not the best way to go in most setups. |
#11
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I ended up going a different route havent had a chance to put these up for sale yet but i wont need them.
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77 Trans Am All Steel, on 10" tires 8.30 @ 165 mph 3,380 LBS Mat it! Spray it! Chute it! Just another 8 Second Pass! |
#12
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Coilovers should work fine on the front if the shocks are long enough. I find most coilovers are too short and the springs you have to use to stop them bottoming out don't have enough stored energy/travel.
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