Help with PB rear notch install - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jmedero · 07-10-2010, 11:35 PM

Well tore my burb down getting ready to install the notches. My question is what are the referance points for cutting the frame? I hold it up and can eyeball it but was just wondering how the other guys measured and cut. Pics would be great.
Thanks

**lolife99** · 07-11-2010, 08:28 AM

Do you have the new "mild drop" notch?

Innovation By Design · 07-11-2010, 08:31 AM

plum bob.....

jmedero · 07-11-2010, 08:53 AM

No it's the weld in step notch.

vgate71 · 07-11-2010, 09:41 AM

As per Nate, the centerline is supposed to be 29" back from the rear-most rivet centerline of the flat box mounting bracket. This is measured along the top of the frame. I have attached a pic of my mockup as well, which Nate said looked correct. The triangular group of rivet holes is where the axle bump-stop used to be.
I know things look kinda wonky in the pic in regards to the axle centerline, but it all works out in the end!

Hope this helps! Or at least was remotely coherent!

Jason

jmedero · 07-11-2010, 02:55 PM

That's perfect!! Thanks for the pics, now time to let the sparks fly!!!

jasonhall · 07-12-2010, 01:22 PM

Would the notch be in the same place on the short beds also?

07-10-2010, 11:35 PM	#1
jmedero Registered User Join Date: Jun 2008 Location: pensacola fl Posts: 3,073	Help with PB rear notch install Well tore my burb down getting ready to install the notches. My question is what are the referance points for cutting the frame? I hold it up and can eyeball it but was just wondering how the other guys measured and cut. Pics would be great. Thanks __________________ 68 BB burb build thread Scott's super slam front/rear http://67-72chevytrucks.com/vboard/s...d.php?t=378084

07-11-2010, 08:28 AM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,703	Re: Help with PB rear notch install Do you have the new "mild drop" notch? __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

07-11-2010, 08:31 AM	#3
Innovation By Design Registered User Join Date: Jul 2010 Location: Mustang Oklahoma Posts: 29	Re: Help with PB rear notch install plum bob.....

07-11-2010, 08:53 AM	#4
jmedero Registered User Join Date: Jun 2008 Location: pensacola fl Posts: 3,073	Re: Help with PB rear notch install No it's the weld in step notch. __________________ 68 BB burb build thread Scott's super slam front/rear http://67-72chevytrucks.com/vboard/s...d.php?t=378084

07-11-2010, 09:41 AM	#5
vgate71 Registered User Join Date: Jun 2003 Location: Manitoba Posts: 57	Re: Help with PB rear notch install As per Nate, the centerline is supposed to be 29" back from the rear-most rivet centerline of the flat box mounting bracket. This is measured along the top of the frame. I have attached a pic of my mockup as well, which Nate said looked correct. The triangular group of rivet holes is where the axle bump-stop used to be. I know things look kinda wonky in the pic in regards to the axle centerline, but it all works out in the end! Hope this helps! Or at least was remotely coherent! Jason Attached Images __________________ '71 Chevy LWB - Awaiting Porterbuilt F+R, LS3, t56 "68 Chevy LWB - To be stock w/250 -6, ps, pb

07-11-2010, 02:55 PM	#6
jmedero Registered User Join Date: Jun 2008 Location: pensacola fl Posts: 3,073	Re: Help with PB rear notch install That's perfect!! Thanks for the pics, now time to let the sparks fly!!! __________________ 68 BB burb build thread Scott's super slam front/rear http://67-72chevytrucks.com/vboard/s...d.php?t=378084

07-12-2010, 01:22 PM	#7
jasonhall Registered User Join Date: May 2008 Location: Stillwater Oklahoma Posts: 829	Re: Help with PB rear notch install Would the notch be in the same place on the short beds also?



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