67-72 vs.73-87 ways to tell chassis apart - The 1947 - Present Chevrolet & GMC Truck Message Board Network

XLR8N · 04-04-2005, 06:11 PM

if you look in the 4 x 4 post under rrrrrrrrrrrrrrrrrrr you will see i had a hard time of installing a new lift on my truck over the weekend. 67-72 front 4 x 4 leaf springs im told are 42'' (unloaded) and 73-87 are 47'' eye to eye. then he tells me that 67-72 rear u-bolts are square and 73-87 are rounded. (mine are round) so now im all messed up on what year truck i have. I have a 67 cab with a 70-72 front clip. is there a way on the frame to be sure of chassis year. i am going to drop some money in this truck and it would make for less headaches on the weekends and having to buy things twice while they hold my money

any help in this area would be great!!!!!!!!

**402Bowtie** · 04-04-2005, 06:30 PM

someone correct me if I'm wrong, but I believe on the passenger side of the frame, right under the door, there are some numbers stamped on the frame. At least that is the way my '72 is. Perhaps those numbers could be used to tell what year the frame is. Maybe they have some correlation to the vin#?

XLR8N · 04-04-2005, 06:57 PM

Quote:

Originally Posted by 402Bowtie

someone correct me if I'm wrong, but I believe on the passenger side of the frame, right under the door, there are some numbers stamped on the frame. At least that is the way my '72 is. Perhaps those numbers could be used to tell what year the frame is. Maybe they have some correlation to the vin#?

i will go look-thanks for the help, any info is more than i got at this point

XLR8N · 04-04-2005, 07:31 PM

you are correct, under my drivers door is a stamp 9/22/73

04-04-2005, 06:11 PM	#1
XLR8N Registered User Join Date: Jan 2005 Location: SARASOTA,FLORIDA Posts: 67	67-72 vs.73-87 ways to tell chassis apart if you look in the 4 x 4 post under rrrrrrrrrrrrrrrrrrr you will see i had a hard time of installing a new lift on my truck over the weekend. 67-72 front 4 x 4 leaf springs im told are 42'' (unloaded) and 73-87 are 47'' eye to eye. then he tells me that 67-72 rear u-bolts are square and 73-87 are rounded. (mine are round) so now im all messed up on what year truck i have. I have a 67 cab with a 70-72 front clip. is there a way on the frame to be sure of chassis year. i am going to drop some money in this truck and it would make for less headaches on the weekends and having to buy things twice while they hold my money any help in this area would be great!!!!!!!! __________________ The Garage 1970 stepside 4 x 4 2005 caddy deville 1998 dodge 2500 diesel 2006 h-d street glide 1948 h-d rigid

04-04-2005, 06:30 PM	#2
402Bowtie Registered User Join Date: Sep 2003 Location: Wichita, KS Posts: 3,735	someone correct me if I'm wrong, but I believe on the passenger side of the frame, right under the door, there are some numbers stamped on the frame. At least that is the way my '72 is. Perhaps those numbers could be used to tell what year the frame is. Maybe they have some correlation to the vin#? Last edited by 402Bowtie; 04-04-2005 at 06:31 PM.

04-04-2005, 07:31 PM	#4
XLR8N Registered User Join Date: Jan 2005 Location: SARASOTA,FLORIDA Posts: 67	you are correct, under my drivers door is a stamp 9/22/73 __________________ The Garage 1970 stepside 4 x 4 2005 caddy deville 1998 dodge 2500 diesel 2006 h-d street glide 1948 h-d rigid



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