How much clearance is needed between bump stop and rear axle. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Arl37 · 02-17-2019, 06:01 PM

Installed 4" drop leaf springs on 69 C10. After shaving rubber bump stops I have about 1 3/4 inch clearance between bump stops and frame. Is that enough or should I C Notch?

Sparky dave · 02-17-2019, 08:25 PM

Guess people going to tell ya that it depends on what roads your driving on and if your putting weight in the bed. Folks are running 5 inch drop and more with no c notch but these trucks all sit a little different from one another particularly the long beds sit a bit lower cause of the extra weight I think. Try it and see that’s my vote

Mike C · 02-18-2019, 08:51 AM

Trim your bump stop in half. That will get you some more clearance. I flipped the axle on m y 69 short step and it netted just over 7” drop. I removed factory bumpstops and installed the 3/8” puck urethane pads tha came with the DJM flip. I have about the same clearance as you from axle housing to puck. With your OEM stops trimmed, you should seldomly connect.

**special-K** · 02-18-2019, 08:58 AM

I know only 1", such as 6" rear coils, 'can' bottom out. I think a couple inches should be good. Doing what Mike suggested will get you there.

02-17-2019, 06:01 PM	#1
Arl37 Registered User Join Date: Jul 2011 Location: Valley Center, Ca Posts: 277	How much clearance is needed between bump stop and rear axle. Installed 4" drop leaf springs on 69 C10. After shaving rubber bump stops I have about 1 3/4 inch clearance between bump stops and frame. Is that enough or should I C Notch?

02-17-2019, 08:25 PM	#2
Sparky dave Registered User Join Date: Nov 2017 Location: Leeds west yorkshire Posts: 307	Re: How much clearance is needed between bump stop and rear axle. Guess people going to tell ya that it depends on what roads your driving on and if your putting weight in the bed. Folks are running 5 inch drop and more with no c notch but these trucks all sit a little different from one another particularly the long beds sit a bit lower cause of the extra weight I think. Try it and see that’s my vote

02-18-2019, 08:51 AM	#3
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,728	Re: How much clearance is needed between bump stop and rear axle. Trim your bump stop in half. That will get you some more clearance. I flipped the axle on m y 69 short step and it netted just over 7” drop. I removed factory bumpstops and installed the 3/8” puck urethane pads tha came with the DJM flip. I have about the same clearance as you from axle housing to puck. With your OEM stops trimmed, you should seldomly connect. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

02-18-2019, 08:58 AM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: How much clearance is needed between bump stop and rear axle. I know only 1", such as 6" rear coils, 'can' bottom out. I think a couple inches should be good. Doing what Mike suggested will get you there. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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