Lowering for stock 15s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**l79m20** · 01-10-2018, 11:48 PM

Hey all,
I want to lower my 71 stepside and want to continue to use my stock 15" wheels. Have read lots of things on here and it appears that some grinding will be required. The biggest question is what parts do i go with. Cpp spindles? Lmc spindles, etc. Would like to use drop spindles and lowering springs in the front and lowering springs in the rear with or without a notch. 4/5 is what I'm going for. Classic parts has kits also. Thinking of piecing parts from cpp classic parts summit and lmc. Looking for suggestions.

RustyBucket · 01-11-2018, 01:30 AM

Front, Cpp 2.5" spindles w/1 coil cut. Rear, 4" Cpp rear springs + 1" lowering block, no notch. Shock re-locator kit and adj. panhard bar. 15x8 truck ralleys, 255/60/15's all around in the picture. Recently replaced the rears with 275/60/15's

68Stepbed · 01-11-2018, 09:31 AM

I'll only recommend drop components from www.earlyclassic.com

Ekliptix · 01-11-2018, 10:28 AM

Do you really mean the stock wheels, or rally rims?
ECE and CPP both have economically priced lowering kits that give a good stance. Ride Tech starts to get more pricey and is more performance oriented.

I'm using ECEs stuff. total of 4.5" in front via 2.5" spindle, 2" springs. Rear is 6.5" using 6" spring and 1/2" lowering block. No c notch. Never had an issue in 10,000 miles. I did replace the ECE shocks with CPP nitrogen shocks and it rides a little better.

Keystone_Hate · 01-11-2018, 10:51 AM

Quote:

Originally Posted by Ekliptix

That's a great truck Ekliptix. Good work.

demian5 · 01-11-2018, 03:07 PM

15x8 w/drums all around.
CPP 3" springs front, 3" springs and 1" block rear.

brownsville · 01-15-2018, 10:32 PM

Im using Mcgaugheys 3.5"/5" kit haven't notched the rear yet ( yea i know you said no notch). 2.5" spindle 1" coil, 5" rear coil shock relocates and pan hard bar. I have 235/75 on the front and rear and its about to be changed. I had to cut off the bump stops up front also. the kit is supposed to be 3.5" up front but its gotta be closer to 5" the tire is maybe an inch away from the fender well

**l79m20** · 01-15-2018, 11:02 PM

Thanks for the tips and pics guys. I'll get to doing some work soon and post the pics of the progress up. I'm not using a 15" rally but a 15" Steelie to take a hubcap.

01-10-2018, 11:48 PM	#1
l79m20 Registered User Join Date: May 2005 Location: Reading, Kansas Posts: 628	Lowering for stock 15s Hey all, I want to lower my 71 stepside and want to continue to use my stock 15" wheels. Have read lots of things on here and it appears that some grinding will be required. The biggest question is what parts do i go with. Cpp spindles? Lmc spindles, etc. Would like to use drop spindles and lowering springs in the front and lowering springs in the rear with or without a notch. 4/5 is what I'm going for. Classic parts has kits also. Thinking of piecing parts from cpp classic parts summit and lmc. Looking for suggestions.

01-11-2018, 01:30 AM	#2
RustyBucket Registered User Join Date: Jul 2009 Location: Space Coast, Fl. Posts: 1,055	Re: Lowering for stock 15s Front, Cpp 2.5" spindles w/1 coil cut. Rear, 4" Cpp rear springs + 1" lowering block, no notch. Shock re-locator kit and adj. panhard bar. 15x8 truck ralleys, 255/60/15's all around in the picture. Recently replaced the rears with 275/60/15's Attached Images __________________ Dad always said, "Son, WISH IN ONE HAND, and ......." -------------------------------------- -------------------------------------- Current toy trucks: '71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C '72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these: '66 Plymouth Belvedere City of Miami cop car clone. '70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!! '67 C10 short/step side mount spare -- SOLD!! '72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!! '69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!! Last edited by RustyBucket; 01-11-2018 at 08:32 AM.

01-11-2018, 09:31 AM	#3
68Stepbed Registered User Join Date: Mar 2005 Location: 10-Uh-See Posts: 5,609	Re: Lowering for stock 15s I'll only recommend drop components from www.earlyclassic.com __________________ Matt 68 C10 stepside, LS1/700R4, TCI Engineering suspension system

01-11-2018, 10:28 AM	#4
Ekliptix Registered User Join Date: Aug 2013 Location: Calgary, Alberta Posts: 683	Re: Lowering for stock 15s Do you really mean the stock wheels, or rally rims? ECE and CPP both have economically priced lowering kits that give a good stance. Ride Tech starts to get more pricey and is more performance oriented. I'm using ECEs stuff. total of 4.5" in front via 2.5" spindle, 2" springs. Rear is 6.5" using 6" spring and 1/2" lowering block. No c notch. Never had an issue in 10,000 miles. I did replace the ECE shocks with CPP nitrogen shocks and it rides a little better. __________________ 1972 Cheyenne Super SWB PS, PB, Tach, A/C, Tilt. Drivetrain: Built 402BB, TCI Streetfighter 700R4, 2,500 stall, Eaton posi, 3.73. Suspension/Chassis: ECE 4.5/6.5 drop, CPP nitrogen shocks, CPP front and rear sway bar, CPP cross members. Exhaust: 3" exhaust with x-pipe, Spintech 3000 mufflers, Hooker ceramic coated headers. Best 1/4 mile time: TBD.

01-11-2018, 03:07 PM	#6
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	Re: Lowering for stock 15s 15x8 w/drums all around. CPP 3" springs front, 3" springs and 1" block rear. Attached Images __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC

01-15-2018, 10:32 PM	#7
brownsville Registered User Join Date: Dec 2007 Location: brownsville, tn Posts: 84	Re: Lowering for stock 15s Im using Mcgaugheys 3.5"/5" kit haven't notched the rear yet ( yea i know you said no notch). 2.5" spindle 1" coil, 5" rear coil shock relocates and pan hard bar. I have 235/75 on the front and rear and its about to be changed. I had to cut off the bump stops up front also. the kit is supposed to be 3.5" up front but its gotta be closer to 5" the tire is maybe an inch away from the fender well Attached Images

01-15-2018, 11:02 PM	#8
l79m20 Registered User Join Date: May 2005 Location: Reading, Kansas Posts: 628	Re: Lowering for stock 15s Thanks for the tips and pics guys. I'll get to doing some work soon and post the pics of the progress up. I'm not using a 15" rally but a 15" Steelie to take a hubcap.



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