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06-02-2002, 05:49 PM
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#1
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Registered User
Join Date: May 2000
Location: Scottsdale, AZ
Posts: 1,738
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How to adjust LCA's for the track?
I just installed Spohn adjustable LCA's and panhard bar. How should I adjust these to best help 1/4 mile times? Lengthen? Shorten?
Thanks,
Aaron
__________________
Aaron 
1994 B4C Z28, M6
Mods: I got a few
AZFBA
my car
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06-02-2002, 06:17 PM
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#3
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Registered User
Join Date: May 2000
Location: Scottsdale, AZ
Posts: 1,738
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Quote:
<font face="Verdana, Arial" size="2">Originally posted by LPEdave:
You may want to post in the drag racing section, but I've never heard of shortening or lengthening LCA's for drag racing purposes. Dropping them lower on LCA brackets, yes.
Dave
</font>
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Yeah it didn't make much sense to me either but I figured they are adjustable so maybe it would make a difference. I guess it must just be mainly to keep the suspension in geometry.
__________________
Aaron
1994 B4C Z28, M6
Mods: I got a few
AZFBA
my car
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06-04-2002, 10:18 AM
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#4
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Member
Join Date: May 2001
Location: Sterling, VA
Posts: 444
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I think by moving them back farther (increasing their length), you can get a more negative pinion angle on the torque arm preloading it more. That could be good for drag racing, but this is just a guess.
--Kevin
__________________
'96 Z-28
80k Miles
Toyo RA1 275/45Z17, Torsen T2R Diff, SLP Coated Headers, SLP Clutch and Flywheel, PCM4Less tuning (w/ LT4 KM), G2 Coilovers (Bilstein and Eibach), G2 Lower A-arm (rodended), Global West upper A-arm, LS1 Driveshaft, G2 PowerPulley, Moroso CAI, B&M Ripper, G2 Pedal Covers (Throttle only), TB Airfoil, Borla 3" catback, G2 Panhard Rod (adj. w/ rodends), G2 Subframe Connectors, G2 Enginebay Brace (4 point), G2 Swaybars, Poly Trans Mount, Autopower 'Race' rollbar, Spacro 5 point harness, Driver & Passenger Sparco Evo2 Seats, Powerslot Rotors w/ Hawk HP+ Pads, Stainless Steel Brake lines, ACES SureShift2 Seq. Shift Light, Spohn Torque arm, LCA(rod/poly) and relocation bracket, McEwen White Gauge Faces.
Waiting to install: McCord Power Plate cutout, LG Spoiler and stripe and ScanMasterLT1
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06-05-2002, 12:14 AM
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#5
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Registered User
Join Date: Oct 2001
Location: Folsom, CA, USA
Posts: 2,048
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Quote:
<font face="Verdana, Arial" size="2">Originally posted by auto-Xer:
I think by moving them back farther (increasing their length), you can get a more negative pinion angle on the torque arm preloading it more. That could be good for drag racing, but this is just a guess.</font>
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That's actually incorrect. The pinion angle is set between the torque arm and the rear end - the LCA's can't control it. Lengthening the LCA's would move your axle toward the rear...
Dave
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06-14-2002, 09:47 PM
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#6
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Registered User
Join Date: Jul 2000
Location: Buffalo, NY
Posts: 7,555
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Adjustable LCA's are mostly used to center a larger tire in the wheel well namely drag slicks.
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96 black Z28 A4
GTP stage II heads, GTP 226/230 cam, 11:1 CR, Pro Torque 2800 TC, Tranny cooler, 3.42, 1.6 rr, Holley 58mm TB, Hooker LT's, SLP CAI, cutout, Flowmaster, Wolfe cage, Carrera's, 5 point belts
Mattucci Motorsports WNYFA FLFB
Pics Anybody else need earplugs when they drive????
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