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Santa arrived! Racecraft kmember and Viking Coil over struts

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Old Dec 29, 2020 | 10:46 PM
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Santa arrived! Racecraft kmember and Viking Coil over struts

Got my new kmember and struts!




Super pumped to get these on my car.
I'm working on putting an engine midplate right now. Then I can start with the bling
Hoping this will drop significant weight off the nose and keep the car from going on the bumper.

I'll post a vid of the installation soon
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Old Dec 30, 2020 | 10:15 AM
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Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: Santa arrived! Racecraft kmember and Viking Coil over struts

awesome! What is your ballpark expected weight loss?
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Old Dec 30, 2020 | 12:22 PM
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Santa arrived! Racecraft kmember and Viking Coil over struts

OEM K-member- 44.8 lbs
K-member w/o mounts- 15.5 lbs
Weight Savings- 29.3 lbs

OEM A-arms = 15lbs
Rod end a-arms = 5.4lbs
Weight savings = 19.2 lbs (both arms)

Stock Spindle Weight: 12.6 (Each).
Racecraft Inc. Spindle Weight: 8.2 Lbs
Weight Savings - 8.8 Lbs (both)

S10-manual steering box = 23.5lb
Pinto rack = 9.4 lb
Weight savings = 14 lbs

Stock brakes to aerospace brakes (not in the pics above)
Weight savings of 3lbs / side = 6 lbs

OEM Front coil spring - 15lbs
RCI coil over spring = 3 lbs
Weight saving of both = 24 lbs

Total savings above are = 101 lbs

There is some misc things that are not accounted for:
added front and midplate,
stock steering arms to RCI shafts (don't know the difference yet)
need a stabilizer that goes from the engine to frame to stop the back and forth movement now I have plates.

I also removed the heater core, blower motor, wiring and plastic venting so there was another 25 lbs there.

I'll have to shift some weight around in the car to even it out
Last time at the track I was 3390lbs (with me in it) (cage, n20 bottle, fuel etc)

Last edited by LB9GTA; Dec 30, 2020 at 01:09 PM.
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Old Dec 30, 2020 | 10:03 PM
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IROCZman15's Avatar
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From: NJ
Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: Santa arrived! Racecraft kmember and Viking Coil over struts

very nice. good breakdown of hte components. What suprised me was the spring weights. I never weighed mine when they were out, but wow, 15 pounds each is a bunch.
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Old Dec 30, 2020 | 11:04 PM
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LB9GTA's Avatar
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Santa arrived! Racecraft kmember and Viking Coil over struts

I had Moroso trick springs. I got the weight off of jegs or summit
Ya, I didn't think they weighed that much either!

Even if I still lose about 80lbs, that's still a win for me!
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Old Sep 28, 2021 | 09:41 PM
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Santa arrived! Racecraft kmember and Viking Coil over struts

The results are in!

The new front coil overs, K-member, brakes and removal of the heater ducting and core took 114 lbs out of the car.

The above pic is my race weight, with me, 15lb nitrous bottle, 1/8 tank of gas, race bullet exhaust, safety stuff(helmet, jacket, pants, shoes)
Success!
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Old Sep 29, 2021 | 06:04 AM
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IROCZman15's Avatar
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From: NJ
Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: Santa arrived! Racecraft kmember and Viking Coil over struts

That’s awesome

I strive to get to a weight like that if it can be attained while keeping it street, show, autocross .
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Old Oct 1, 2021 | 12:26 PM
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Re: Santa arrived! Racecraft kmember and Viking Coil over struts

What size and grade are the bolts for the K-Member? I bought a used one and don't have bolts for it.
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