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#1 |
Registered User
Join Date: Feb 2005
Location: Saskatoon, SK
Posts: 97
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Bend in drivers side frame rail?
I'm still getting to know these trucks so I'm not sure if this is a 'thing'.
Story: My truck has a bit of a bend in the lower flange of the drivers side frame rail. It doesn't concern me much but there doesn't seem to be any damage or marks or any explanation of why its there. I was recently browsing a thread about transmission crossmembers and noticed a picture of the same thing. Post #11 Here's a picture from the other thread (I don't have one of my own): ![]() Mine never had a catalytic converter but I see what kind of looks like a heatshield above this area in this picture. Anyone got an explanation or is this just a weird coincidence? |
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#2 |
Diggin The SquareLife
Join Date: Dec 2010
Location: garland,tx
Posts: 1,933
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Re: Bend in drivers side frame rail?
its normal
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#3 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: Bend in drivers side frame rail?
What year is your truck ?Some one could have removed the cat from it.
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#4 |
Registered User
Join Date: Feb 2005
Location: Saskatoon, SK
Posts: 97
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Re: Bend in drivers side frame rail?
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#5 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: Bend in drivers side frame rail?
in 75 trucks under 6k gvw got a cat,78 gm changed the frame to fit the cat better,And in 79 all got cats up to a 8500 gvw on them.Yours should have had a cat on it,But when they clogged up or stopped working some people did remove them if they didn't have smog testing.
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#6 | |
Registered User
Join Date: Feb 2005
Location: Saskatoon, SK
Posts: 97
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Re: Bend in drivers side frame rail?
Quote:
I'm not saying you're wrong but if someone removed the cat then they would have changed the entire Y pipe as well. Mine also doesn't have a heatshield like in the picture. I also had a '79 almost 10 years ago and it had no signs of a cat either. Now I want to dig into this a bit! Last edited by oldpurple; 05-07-2016 at 10:48 AM. |
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#7 |
Registered User
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,227
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Re: Bend in drivers side frame rail?
My Canadian-market '77 has the bend in the frame, and originally came with a cat.
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1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate |
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#8 |
Registered User
Join Date: Jul 2007
Location: Ontario Canada
Posts: 1,006
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Re: Bend in drivers side frame rail?
It's factory
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![]() 1985 C10 2004 Avalanche |
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#9 |
Registered User
Join Date: Jun 2014
Location: Longmont, Colorado
Posts: 252
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Re: Bend in drivers side frame rail?
Got a 79 with the same bend, I always figured my Grandpa hit something with it on his Farm. Good thing I never got around to "straightening" it out.
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Folks that throw dirt on you aren't always trying to hurt you, and folks that pull you out of a jam aren't always trying to help you. |
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#10 |
Registered User
Join Date: Dec 2014
Location: Coal City, IL
Posts: 695
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Re: Bend in drivers side frame rail?
My '85 Canada built C/10 was the same way. I corrected it during my frame off build. I thought it was damaged, so I put it on a frame table and fixed it.
If they are all like that, I guess I didn't need to do anything with it. Too late
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Tony Nicholas @ Midwest Metal Masters 1953 Chevy 3100 392 Hemi w/727 & 9” Ford 1985 Chevy C/10 6.0L 4L80 373 locker |
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#11 |
Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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Re: Bend in drivers side frame rail?
http://67-72chevytrucks.com/vboard/s...d.php?t=281521
http://67-72chevytrucks.com/vboard/s...ad.php?t=60525 http://67-72chevytrucks.com/vboard/s...d.php?t=403972
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Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed |
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#12 |
Registered User
Join Date: Jul 2011
Location: SW Ontario
Posts: 1,204
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Re: Bend in drivers side frame rail?
Canadian emmisions equipment and cat use on trucks is all over the map, especially around 1980. Just as an oddball non-truck example, a 1979 Chrysler LeBaron (Dodge Diplomat, Plysmouth Caravelle) MIGHT not have had a cat from the factory. Wish I could remember the details, but it was a specific engine and carb option. It is not well documented outside factory literature since the general rule of thumb has been cats on all passenger cars since 1977, but there are a few exceptions to the rule. Trucks even more-so. Its also one reason I suspect why Ontario never included anything older than 1981 when they went to e-testing early in the 2000's.
Other useless emmisions trivia: 1983 is a common year for US cars to get into the feedback carb, here in Canada a 1983 Camaro still had a non-feedback carb. Same for trucks, you guys got the full feedback carb and computer a couple three years before it showed up here. My old '83 C10, 305 4bbl, no air pump, standard carb. Just EGR and a Cat My '81 C1500, same thing. Certain models where also Cat free. Alex. Last edited by Axle; 05-08-2016 at 12:20 PM. |
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#13 | |
Registered User
Join Date: Feb 2005
Location: Saskatoon, SK
Posts: 97
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Re: Bend in drivers side frame rail?
Quote:
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#14 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: Bend in drivers side frame rail?
Quote:
We wouldn't proliferate frames to have cat vs non cat part numbers. K
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#15 |
Registered User
Join Date: Feb 2005
Location: Saskatoon, SK
Posts: 97
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Re: Bend in drivers side frame rail?
Yes I understand that. I'm mostly referring to the comment in post #5
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#16 |
Registered User
Join Date: May 2015
Location: Parma, Ohio
Posts: 35
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Re: Bend in drivers side frame rail?
Yup, my 79 has same bend as well. I almost bought another frame when I started my build then noticed both frames had same bend.
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