C Notch Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Already Gone** · 12-19-2003, 02:51 PM

Being new to this Chevy truck world and learning the applicable terminologies it is nice to see pics posted so I now know exactly what "C Notching " means. Now for my question. I have a 72 Long box with coil springs and I want to do a 4inch drop on the rear and 2 1/2 in the front. If I do not C Notch the frame will my axle hit the frame all the time.

**Already Gone** · 12-19-2003, 03:52 PM

I forgot to mention that I have 235/75 r15 tires on 15 x 8 stock Chevy rallye rims and plan to run 17 inch tires with about the equivalent width and high or slightly taller and wider.

Slammed67 · 12-19-2003, 04:24 PM

Well, tire/wheel size is really irrelevant regarding your question. You'll be fine with a 4" drop and no c-notch. Some guys are running 6" rear drop without a c-notch with no problems.

Hotrod70C10 · 12-20-2003, 03:12 AM

Well, I have a 4 inch rear drop and I have only hit the bumpstop on the frame once... Well I actually rode on the bumpstop

I had 20 8 foot treated 4x4 posts in the back of my truck. I had to do it for a job I was doing. But to answer you question you will be fine with a 4" drop. Slammed67 is right there are a few guys running a 6" drop with out a notch in the frame and, they haven't had any problems.

**Already Gone** · 12-21-2003, 12:37 PM

Thanks for the help and advice. I'll try it without and if it becomes a problem deal with it then.

jamis · 12-21-2003, 03:11 PM

I have a 7" drop and did a c-notch, I dont know if a really need it. But since I'm doing a frame off, I thought this would be the best time to do it incase I want to go a little lower later.
So if you have your truck already apart like mine it might not be a bad idea to do it now while its easy.

12-19-2003, 02:51 PM	#1
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,126	C Notch Question Being new to this Chevy truck world and learning the applicable terminologies it is nice to see pics posted so I now know exactly what "C Notching " means. Now for my question. I have a 72 Long box with coil springs and I want to do a 4inch drop on the rear and 2 1/2 in the front. If I do not C Notch the frame will my axle hit the frame all the time.

12-19-2003, 03:52 PM	#2
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,126	I Forgot I forgot to mention that I have 235/75 r15 tires on 15 x 8 stock Chevy rallye rims and plan to run 17 inch tires with about the equivalent width and high or slightly taller and wider.

12-19-2003, 04:24 PM	#3
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	Well, tire/wheel size is really irrelevant regarding your question. You'll be fine with a 4" drop and no c-notch. Some guys are running 6" rear drop without a c-notch with no problems. __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

12-20-2003, 03:12 AM	#4
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	Well, I have a 4 inch rear drop and I have only hit the bumpstop on the frame once... Well I actually rode on the bumpstop I had 20 8 foot treated 4x4 posts in the back of my truck. I had to do it for a job I was doing. But to answer you question you will be fine with a 4" drop. Slammed67 is right there are a few guys running a 6" drop with out a notch in the frame and, they haven't had any problems. __________________ 70' C-10 LWB Fleetside 4.5/6 drop

12-21-2003, 12:37 PM	#5
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,126	Thanks Thanks for the help and advice. I'll try it without and if it becomes a problem deal with it then.

12-21-2003, 03:11 PM	#6
jamis F.A.S.T. president Join Date: Sep 2003 Location: Florida Posts: 1,883	I have a 7" drop and did a c-notch, I dont know if a really need it. But since I'm doing a frame off, I thought this would be the best time to do it incase I want to go a little lower later. So if you have your truck already apart like mine it might not be a bad idea to do it now while its easy.



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