best uca
3rd Gear Member
Joined: Jul 2006
Posts: 544
From: North Jackson, OH
RE: best uca
This was part of CrazyAl's writeup about suspension regarding the uca:
Upper Control arms (UCA):
Another factory weak spot. The upper control arm is located above the rear differential housing. The stock one is stamped steel and is quite flimsy for the amount of load it has to bear. You can get aftermarket UCAs in either the solid type or the adjustable type, just like LCAs. You only need adjustability on one set (either upper OR lower). Personally I suggest a SOLID UCA and then adjustable LCAs. (this is stronger and easier to adjust). I think the BMR solid UCA is the best on the market, no contest. While many companies have decent LCAs, BMR is the undisputed king of the UCA. It's boxed design and thick steel construction is completely bulletproof. I suggest the one with the spherical bearing. Also, buy a polyurethane bushing that fits in the diff housing to go with it. The bushing is dirt cheap, and it's a pain to install. But it's worth it. This combined with good LCAs will have your rear end hooking up like nobody's business. If you are running serious HP and low drag times, get the matching UCA mount to go with this. The poly bushing for the rear end housing is available from Spohn or BMR.
Al's Pick: BMR solid (non-adjustable) with spherical bearing.
Another factory weak spot. The upper control arm is located above the rear differential housing. The stock one is stamped steel and is quite flimsy for the amount of load it has to bear. You can get aftermarket UCAs in either the solid type or the adjustable type, just like LCAs. You only need adjustability on one set (either upper OR lower). Personally I suggest a SOLID UCA and then adjustable LCAs. (this is stronger and easier to adjust). I think the BMR solid UCA is the best on the market, no contest. While many companies have decent LCAs, BMR is the undisputed king of the UCA. It's boxed design and thick steel construction is completely bulletproof. I suggest the one with the spherical bearing. Also, buy a polyurethane bushing that fits in the diff housing to go with it. The bushing is dirt cheap, and it's a pain to install. But it's worth it. This combined with good LCAs will have your rear end hooking up like nobody's business. If you are running serious HP and low drag times, get the matching UCA mount to go with this. The poly bushing for the rear end housing is available from Spohn or BMR.
Al's Pick: BMR solid (non-adjustable) with spherical bearing.
Thread Starter
3rd Gear Member
Joined: Jun 2007
Posts: 624
From:
RE: best uca
i have that saved in Word. im not sure weather to buy a solid ucas and solid lcas. or do i need an adjustable uca or lca if my angles arent correct? without lowering, all my angles should be fine correct?
4th Gear Member
Joined: Nov 2006
Posts: 1,308
From: Now in Sunny SOCAL
RE: best uca
Adjustable LCA's are probably best, as they are easier to adjust, I have both upper and lower adjustables. Most of our cars come with the rear axle crooked with the body, the adj. lower arm will allow you fix this. Just measure the front edge of your rear tires to the rear fenderwell and you will see that the right and left sides of the car do not match. The are usually off between 1/4" and 1/2". With the adjustable LCA you can fix this issue. It's also good toget a four wheel alignment afterward.
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