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#1
10-14-2013, 05:39 PM
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LCA Relocation Brackets
Has anyone used these, and if so did they improve traction?
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#2
10-14-2013, 06:47 PM
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I tried a set on my street car. On a couple of marginal tracks, it hit hard than caused the tires to unload. Didn't improve times due to this. On a better track, may have helped. Have since went with a 9", so they're off now.
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65 Lemans Street Car - 521, T400, 3.70 9". 10.13 @ 135. 3770 lbs. Drag Week ‘14, ‘15, ‘17 63 Lemans Race Car- 8.81 @ 151, 5.60 @ 123(SOLD) 67 Bonneville ragtop 74 Firebird - 455, e heads, TK0600 in process |
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#3
10-14-2013, 08:44 PM
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Which ones specifically,have seen several different ones?
Bret P. |
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#4
10-15-2013, 06:39 AM
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These are the ones from Quick Performance for the 9". They have several adjustment holes. I have not installed them yet. I have been having tration problems with the 4.56 gear. I have installed adjustable uppers, I have boxed lowers, Moroso springs, Summit adjustable shocks, and control arm braces. I changed tires from a 26x11.50x15 to 27x10.50x15. Brand new tires. I took the car out this weekend for the first time since the changes were made and had horrible 60' times. Spinning all the way through first gear, had to peddle a couple of times. I was hoping the taller tire would help some. Only made 4 passes though. Would the pinion angle help with traction. What is the best way to set it? I have heard several different suggestions. At 97 MPH I should be 7.0's. Thanks.
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#5
10-15-2013, 06:45 AM
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Sounds like you are shooting in the dark.
You need to understand where your rear suspension Instant Center is with respect to the center of gravity of the car. I recommend finding an Alston Chassis manual or Dave Morgan's doorslammer book and doing some more reading. This may bring some naysayers out of the wood work but pinion angle has nothing to do with 60' times. It can't - based on the physics of the rear suspension. It can only pass or hinder the transmission of torque through the driveline. My $0.03. K
__________________
'63 LeMans Convertible '63 Grand Prix '65 GTO - original, unrestored, Dad was original owner, 5000 original mile Royal Pontiac factory racer '74 Chevelle - original owner, 9.85 @ 136 mph besthttp://www.superchevy.com/features/s...hevy-chevelle/ My Pontiac Story: http://forums.maxperformanceinc.com/...d.php?t=560524 "Intro from an old Assembly Plant Guy":http://67-72chevytrucks.com/vboard/s...d.php?t=342926 |
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#6
10-15-2013, 06:56 AM
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Thanks. Can you describe how to find the ideal IC? I am sure it changed when I went from the 10 bolt to the 9" rear.
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