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09-12-2014, 01:32 PM | #1 |
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Location: lousiville Ky
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Axle Flip Method with some Performance?
Question: best method to lower rear so that tires ( 275x60x15) fill wheel wells, thinking about 3 inches.
Planning on lowering the rear of 1986' C10 SB SS, to match lowered front, that has one coil cut off front springs. Estimate front to be lower by 2 to 2.5 inches ( per info provided by members here- thanks) probably about 2" as front has been lighten by alu. head, intake, along with removal of certain non- essential stuff. Current thinking from suggestions from member is to use axle flip approach, Which if done correctly will stand up to 400/400 H.P./Torque Ft-Lbs, along with trips down drag strip including radial slicks. Specific questions are: 1). What specific method for doing axle flip, looking at Western flip kit-is it strong enough? Anybody dragging with it? Or do I need to weld on new perches to be safe with performance capability, along with shims to set 4 to 5 degrees of down pinion angle. 2). Research for flip kits state that rear is lowered from 5 to 6 inches, which is more then I need. Therefor, after doing flip, will likely need to raise rear back up a little. How to do this? Thinking of using new springs, that have the additional arch I need. Is their a better way way, considering the performance capability of truck? Note: my research showed axle flip is safest/ best performance way to do lowering. If new springs, currently it has 51.5 " with 3 leaves, could go to 56" with more leaves. For strip action plan to uses Cal-Tracks. The 51.5" with more arch would be easiest to change out. However, moving rear hangers back for 56ers should not be a big issue as frame is already drilled for that length spring. Stock SB 1986' Chassis with 56" springs has about 2.5 inches more arch then the 51/3 springs. Thanks, Les |
09-12-2014, 03:17 PM | #2 |
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Re: Axle Flip Method with some Performance?
You should probably just get the 4in drop shackles and hangers, this will make it sit level with the 2in drop in the front. If you do a flip in the rear without adding spindles to the front it will be lower in the rear.
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09-12-2014, 03:22 PM | #3 |
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Re: Axle Flip Method with some Performance?
New spring pads. Cheap and stronger
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09-12-2014, 08:25 PM | #4 |
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Re: Axle Flip Method with some Performance?
There is a drag racing site with a pretty good stock suspension section. yellowbullet.com There are a few c10 threads.
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09-12-2014, 11:28 PM | #5 |
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Re: Axle Flip Method with some Performance?
Flipped and cal Trac bars. Depending on power and converter 1.75-1.60 60' times are easy
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" That didnt make it any newer " " Dont antique the equipment " Last edited by KQQL IT; 09-12-2014 at 11:36 PM. Reason: pic |
09-13-2014, 12:41 AM | #6 |
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Re: Axle Flip Method with some Performance?
Thanks to everybody for the help.
Cool-It, the 60' times sound great! Are they based on info provided above? A little more info on truck: It will be a 86' C10 SB, SS, 350 CI with 400 HP at 5700 RPMs and about 375 @ 3200, 400 ft-lbs of torque on a pretty flat torque curve ( selected a cam with a flatter torque curve vs more peak HP); 3:73 gears, MY6 four speed ( it has a good low first gear). Trying to lighten truck some. Will be interested to see what it weights. Thanks, Les |
09-13-2014, 07:56 AM | #7 |
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Re: Axle Flip Method with some Performance?
500ish hp 400 T400 10" converter 3:82 gear in a 9" rear end. Come down to the drag race board lots of good info there. http://67-72chevytrucks.com/vboard/f...splay.php?f=60
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09-13-2014, 02:11 PM | #8 |
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Re: Axle Flip Method with some Performance?
The spring under axle will be a little better for axle wrap. How much im not sure.
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09-13-2014, 06:06 PM | #9 |
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Re: Axle Flip Method with some Performance?
And the 3 leaf will work better with cal tracs
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