New Prototype K memeber
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New Prototype K memeber
Here is a new Kmember a friend of mine has built. He will be test fitting it in an Outlaw 10.5 this weekend.
this Kmember with control arms weighs 18lbs.


this Kmember with control arms weighs 18lbs.


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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
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Re: New Prototype K memeber
The pictures are a little small to see detail. I'm not sure I like the A-arm mounts. Without side braces, what's to keep them from folding under? I guess without seeing exactly what type or style of A-arms this is designed for, it's hard to make a judgment call on the design.
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From: Cincinnati, Ohio
Car: '89 GTA
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Re: New Prototype K memeber
The pictures are a little small to see detail. I'm not sure I like the A-arm mounts. Without side braces, what's to keep them from folding under? I guess without seeing exactly what type or style of A-arms this is designed for, it's hard to make a judgment call on the design.

It says he is only at mid-design test fit stage so I assume there is much more to come. Thats a bit far from the finished product to brag about weight
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From: PA
Car: 86 Trans AM
Engine: LS1 (not stock...)
Transmission: Built T56
Axle/Gears: Strange 12-bolt w/ 3.73
Re: New Prototype K memeber
Outlaw 10.5 car.... Maybe motor plates? Not sure what the class has as far as restrictions.
If its strictly a straight line car, and he's gonna run motor plates, I can see this working pretty good. Ide like to see it under the car with the control arms bolted on. Im guessing it'll need a little more but kudos to him for building his own parts!
J.
If its strictly a straight line car, and he's gonna run motor plates, I can see this working pretty good. Ide like to see it under the car with the control arms bolted on. Im guessing it'll need a little more but kudos to him for building his own parts!
J.
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Joined: Jul 1999
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: New Prototype K memeber
When I bought my ProFab k-member and a-arms many years ago, I ordered it without motor mounts as I was already using motor plates.
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Re: New Prototype K memeber
This Kmemeber will be using TRZ motorsports Gbody lower control arms.
The center will removable with a 4 bolt flange in ench end,
This k member will not have motor mounts, must have motor plate.
Also will only be made in 4130 chromemoly.
He has the same design in some of the fasted X275 and putlaw radial tire mustangs in the country.
A friend of mine has one is his mustang and he has wheel stood the thing 100s of times with rought landings and no damage to the k member. The mustang kmember looks damn near the same as this one.
The center will removable with a 4 bolt flange in ench end,
This k member will not have motor mounts, must have motor plate.
Also will only be made in 4130 chromemoly.
He has the same design in some of the fasted X275 and putlaw radial tire mustangs in the country.
A friend of mine has one is his mustang and he has wheel stood the thing 100s of times with rought landings and no damage to the k member. The mustang kmember looks damn near the same as this one.
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Car: 85z28
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Re: New Prototype K memeber
Here is a link to a mustang kmember install
http://www.yellowbullet.com/forum/sh...d.php?t=316647
http://www.yellowbullet.com/forum/sh...d.php?t=316647
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Joined: Jul 1999
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: New Prototype K memeber
OK, seeing the installed design makes a bit more sense now.
So what's the purpose of the removable center? Engine removal?
So what's the purpose of the removable center? Engine removal?
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From: PA
Car: 86 Trans AM
Engine: LS1 (not stock...)
Transmission: Built T56
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Re: New Prototype K memeber
Def makes oil pan removal easier thats for sure! Can probably rebuild the motor without removing it from the car if you had to do it in a hurry.
As a track piece...that thing is nice. And you cant argue with results.
J.
As a track piece...that thing is nice. And you cant argue with results.
J.
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From: orlando
Car: 85z28
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Axle/Gears: 3.80 gear 35 spline axles
Re: New Prototype K memeber
Here is the Kmember is the outlaw 10.5 car. This is just a test fit.
Look at all the header room you have?
When you are pushing 40-50lbs of boost like most 10.5 and radial tire cars do and spraying nitrous car with a ton of N20 like they are doing in the X275 radial tire races, you will be putting pistons in them at big races.
Look at all the header room you have?
When you are pushing 40-50lbs of boost like most 10.5 and radial tire cars do and spraying nitrous car with a ton of N20 like they are doing in the X275 radial tire races, you will be putting pistons in them at big races.
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: New Prototype K memeber
gorgeous....keep us posted man, this looks like a nice piece! makes me want to put motor plates in the car, lol
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: New Prototype K memeber
That legal for a outlaw 10.5?
"Front Chassis/Suspension: No full tube chassis allowed. Back half vehicles only. The back half-lower frame section must not extend forward past the rear most portion of the K-member or cross-member and the suspension components can not attach to it. Complete stock front frame rails from the firewall forward must be retained. Front frame horns may be modified for fitting of removable front end. Stock type suspension and configuration required. All factory control arms must bolt in the factory frame mounting location or the K-member/crossmember. The lower control arm should bolt in factory location. All vehicles manufactured with four control arms must retain four functioning control arms. Spindle and dampening device can not be directly welded or bolted together. After market spindles allowed. Commercially available coil-overs, springs, or struts allowed. Modifying of strut or shock towers allowed for header and engine clearance only. Must retain at least 50% of the original tower. Top plate may not be modified except mounting holes may be slotted (not relocated). Upper shock tower bar may be grafted in. (Tech decision will be final)."
?
-- Joe
"Front Chassis/Suspension: No full tube chassis allowed. Back half vehicles only. The back half-lower frame section must not extend forward past the rear most portion of the K-member or cross-member and the suspension components can not attach to it. Complete stock front frame rails from the firewall forward must be retained. Front frame horns may be modified for fitting of removable front end. Stock type suspension and configuration required. All factory control arms must bolt in the factory frame mounting location or the K-member/crossmember. The lower control arm should bolt in factory location. All vehicles manufactured with four control arms must retain four functioning control arms. Spindle and dampening device can not be directly welded or bolted together. After market spindles allowed. Commercially available coil-overs, springs, or struts allowed. Modifying of strut or shock towers allowed for header and engine clearance only. Must retain at least 50% of the original tower. Top plate may not be modified except mounting holes may be slotted (not relocated). Upper shock tower bar may be grafted in. (Tech decision will be final)."
?
-- Joe
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Joined: May 2006
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From: orlando
Car: 85z28
Engine: sbc
Transmission: th400
Axle/Gears: 3.80 gear 35 spline axles
Re: New Prototype K memeber
That legal for a outlaw 10.5?
"Front Chassis/Suspension: No full tube chassis allowed. Back half vehicles only. The back half-lower frame section must not extend forward past the rear most portion of the K-member or cross-member and the suspension components can not attach to it. Complete stock front frame rails from the firewall forward must be retained. Front frame horns may be modified for fitting of removable front end. Stock type suspension and configuration required. All factory control arms must bolt in the factory frame mounting location or the K-member/crossmember. The lower control arm should bolt in factory location. All vehicles manufactured with four control arms must retain four functioning control arms. Spindle and dampening device can not be directly welded or bolted together. After market spindles allowed. Commercially available coil-overs, springs, or struts allowed. Modifying of strut or shock towers allowed for header and engine clearance only. Must retain at least 50% of the original tower. Top plate may not be modified except mounting holes may be slotted (not relocated). Upper shock tower bar may be grafted in. (Tech decision will be final)."
?
-- Joe
"Front Chassis/Suspension: No full tube chassis allowed. Back half vehicles only. The back half-lower frame section must not extend forward past the rear most portion of the K-member or cross-member and the suspension components can not attach to it. Complete stock front frame rails from the firewall forward must be retained. Front frame horns may be modified for fitting of removable front end. Stock type suspension and configuration required. All factory control arms must bolt in the factory frame mounting location or the K-member/crossmember. The lower control arm should bolt in factory location. All vehicles manufactured with four control arms must retain four functioning control arms. Spindle and dampening device can not be directly welded or bolted together. After market spindles allowed. Commercially available coil-overs, springs, or struts allowed. Modifying of strut or shock towers allowed for header and engine clearance only. Must retain at least 50% of the original tower. Top plate may not be modified except mounting holes may be slotted (not relocated). Upper shock tower bar may be grafted in. (Tech decision will be final)."
?
-- Joe
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: New Prototype K memeber
I wish I could put a rack on my car. The steering shaft would have to go under the headers to a different location on the firewall.
Joined: Jun 2001
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From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Re: New Prototype K memeber
That legal for a outlaw 10.5?
"Front Chassis/Suspension: No full tube chassis allowed. Back half vehicles only. The back half-lower frame section must not extend forward past the rear most portion of the K-member or cross-member and the suspension components can not attach to it. Complete stock front frame rails from the firewall forward must be retained. Front frame horns may be modified for fitting of removable front end. Stock type suspension and configuration required. All factory control arms must bolt in the factory frame mounting location or the K-member/crossmember. The lower control arm should bolt in factory location. All vehicles manufactured with four control arms must retain four functioning control arms. Spindle and dampening device can not be directly welded or bolted together. After market spindles allowed. Commercially available coil-overs, springs, or struts allowed. Modifying of strut or shock towers allowed for header and engine clearance only. Must retain at least 50% of the original tower. Top plate may not be modified except mounting holes may be slotted (not relocated). Upper shock tower bar may be grafted in. (Tech decision will be final)."
?
-- Joe
"Front Chassis/Suspension: No full tube chassis allowed. Back half vehicles only. The back half-lower frame section must not extend forward past the rear most portion of the K-member or cross-member and the suspension components can not attach to it. Complete stock front frame rails from the firewall forward must be retained. Front frame horns may be modified for fitting of removable front end. Stock type suspension and configuration required. All factory control arms must bolt in the factory frame mounting location or the K-member/crossmember. The lower control arm should bolt in factory location. All vehicles manufactured with four control arms must retain four functioning control arms. Spindle and dampening device can not be directly welded or bolted together. After market spindles allowed. Commercially available coil-overs, springs, or struts allowed. Modifying of strut or shock towers allowed for header and engine clearance only. Must retain at least 50% of the original tower. Top plate may not be modified except mounting holes may be slotted (not relocated). Upper shock tower bar may be grafted in. (Tech decision will be final)."
?
-- Joe
Joined: Jun 2002
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: New Prototype K memeber
they don't want "front half" cars...as in full tube chassis.
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: New Prototype K memeber
I realize replacement k-members are legal, I'm just curious how far of a design change makes it illegal for the outlaw class.
I'm not into points racing anymore, and have not been for a couple of years so I just am concerned with safety. I was just curious in this case more than anything. I bought a bender a few months ago and if I have some ambition next winter I might make a tubular front end for my car.
-- Joe
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From: Murphy, TX
Car: 1990 formula
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Re: New Prototype K memeber
Yeah I guess it's up to interpretation.
I realize replacement k-members are legal, I'm just curious how far of a design change makes it illegal for the outlaw class.
I'm not into points racing anymore, and have not been for a couple of years so I just am concerned with safety. I was just curious in this case more than anything. I bought a bender a few months ago and if I have some ambition next winter I might make a tubular front end for my car.
-- Joe
I realize replacement k-members are legal, I'm just curious how far of a design change makes it illegal for the outlaw class.
I'm not into points racing anymore, and have not been for a couple of years so I just am concerned with safety. I was just curious in this case more than anything. I bought a bender a few months ago and if I have some ambition next winter I might make a tubular front end for my car.
-- Joe
There have also been some rules about how much front framerail is required... it used to be 4" in front of the motorplate, but that has slipped.
It's tough to hang in that class, lots of money required! I raced in KOTH outlaw 10.5 for a few years down in TX. Ran some 4.7-4.8 or so, not nearly fast enough to hang with the big boys.
Joined: Jun 2001
Posts: 8,028
Likes: 93
From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Re: New Prototype K memeber
Yeah I guess it's up to interpretation.
I realize replacement k-members are legal, I'm just curious how far of a design change makes it illegal for the outlaw class.
I'm not into points racing anymore, and have not been for a couple of years so I just am concerned with safety. I was just curious in this case more than anything. I bought a bender a few months ago and if I have some ambition next winter I might make a tubular front end for my car.
-- Joe
I realize replacement k-members are legal, I'm just curious how far of a design change makes it illegal for the outlaw class.
I'm not into points racing anymore, and have not been for a couple of years so I just am concerned with safety. I was just curious in this case more than anything. I bought a bender a few months ago and if I have some ambition next winter I might make a tubular front end for my car.
-- Joe
Funny, if I was building specifically to go after the class I'd probably figure out how far I could push the rules in a helpful way and not get caught, so I wouldn't bother racing those cars anyway... oh well...
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From: orlando
Car: 85z28
Engine: sbc
Transmission: th400
Axle/Gears: 3.80 gear 35 spline axles
Re: New Prototype K memeber
AA Performance chrome moly
lightweight pro series
K members and accesories
avalaible at TRZ Motorsports
Double adjustable control arms(optional of 1" shorter)
Adjustable suspension travel limiters
82-92 camaro/firebird
wieight: 13.5 pounds
3 pieces
center is removable to access oil pan.
avalible with double adjustable a arms
lightweight pro series
K members and accesories
avalaible at TRZ Motorsports
Double adjustable control arms(optional of 1" shorter)
Adjustable suspension travel limiters
82-92 camaro/firebird
wieight: 13.5 pounds
3 pieces
center is removable to access oil pan.
avalible with double adjustable a arms


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From: Annapolis, Maryland
Car: 1985 Camaro
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luvofjah
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Sep 26, 2015 08:28 PM





Been thinking about my LSx swap and completely forgot about motor plates.

