Frame differences between 67 and 71 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tutt · 02-03-2009, 12:46 PM

I am selling a guy a 67 frame so he can make his 71 a SWB. He is keeping his big block. What problems is he going to run into? i know he will have to notch the top of his frame for the exhaust. Is there anything else? It seems like there was something about where the power steering box mounted.

oldno7 · 02-03-2009, 02:24 PM

I don't think the 67 had big blocks, I'm thinking the area around the mounts need trimed on the 67frames.

67ChevyRedneck · 02-03-2009, 02:46 PM

A 67 frame doesn't have the "dimple" for the power steering box that 68-72 frames had. It can be cut out from the newer frame, heated and dimpled, or the PS box can be shimmed.

**Shock_Me** · 02-03-2009, 03:03 PM

He'll have to use the 67-68 rad support rubber mounts, because they made them bigger from 69 to 72 and they won't fit into the smaller holes on your 67 frame.

Pete

truckintexas · 02-03-2009, 04:21 PM

This is exactly my set-up as well, and the responses so far are right on. My frame, suspension, and all chassis components are complete, so next is mounting the cab, bed, and front clip.

He must remember that "frame mount" items may or may not be different between 67 and 71. He should consider this every time he buys a part. One such item is the frt bumper brackets. 71-72 were different from 67-70. Also, the brake line going from a long bed to a short bed needed to be modified.

It can be done, it's just something that he will have to stay aware of constantly.

Ont67shortbox · 02-03-2009, 04:47 PM

I have a 67 and the frame is dimpled for power steering and it has power steering, did I get an odd frame or was it later in 67 when they changed and added the dimple?

Tutt · 02-03-2009, 04:58 PM

thanks guys! anything else?

67ChevyRedneck · 02-03-2009, 05:14 PM

Quote:

Originally Posted by Ont67shortbox

I have a 67 and the frame is dimpled for power steering and it has power steering, did I get an odd frame or was it later in 67 when they changed and added the dimple?

It's possible you got a late model 67 that came off the line with the newer style frame/power steering right before the 68 model year trucks began running down the line.

The reason the vast majority of '67 frames are straight is because GM used a ram assisted power steering set up and there was no need for the dimple.

*project 67 sub* · 02-04-2009, 03:51 AM

my 67 burb frame is dimpled for power steering to

Longhorn Man · 02-05-2009, 05:43 PM

the core support mounts are the same 67 - 72

**Shock_Me** · 02-15-2009, 07:25 PM

Quote:

Originally Posted by Longhorn Man

the core support mounts are the same 67 - 72

Really? I think if you look closely you'd see that the holes in the mounts are smaller on 67-68 frames. Also the rubbers have different part numbers on most vendors sites.
I have a 68 C-10 with a 72 frame. When I ordered the 67-68 core support rubbers, they slipped right through the core support holes.
Maybe I was installing them incorrectly...

Pete

Longhorn Man · 02-15-2009, 07:41 PM

sorry... the rubbers are the same. as soon as I saw this (10 days later) I realized I misspoke.

**Shock_Me** · 02-15-2009, 08:38 PM

no worries Longhorn,

Any idea why GM made them different? Just seems like a strange thing to change.

Pete

02-03-2009, 12:46 PM	#1
Tutt Registered User Join Date: Dec 2005 Location: Houston TX Posts: 77	Frame differences between 67 and 71 I am selling a guy a 67 frame so he can make his 71 a SWB. He is keeping his big block. What problems is he going to run into? i know he will have to notch the top of his frame for the exhaust. Is there anything else? It seems like there was something about where the power steering box mounted.

02-03-2009, 02:24 PM	#2
oldno7 Registered User Join Date: Jan 2007 Location: Ill. Posts: 584	Re: Frame differences between 67 and 71 I don't think the 67 had big blocks, I'm thinking the area around the mounts need trimed on the 67frames. __________________ Hi everyone, It's nice to know there's other people just as crazy about these old trucks as I am. oldno7

02-03-2009, 02:46 PM	#3
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Frame differences between 67 and 71 A 67 frame doesn't have the "dimple" for the power steering box that 68-72 frames had. It can be cut out from the newer frame, heated and dimpled, or the PS box can be shimmed. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

02-03-2009, 03:03 PM	#4
Shock_Me Senior Member Join Date: May 2005 Location: New Brunswick, Canada Posts: 591	Re: Frame differences between 67 and 71 He'll have to use the 67-68 rad support rubber mounts, because they made them bigger from 69 to 72 and they won't fit into the smaller holes on your 67 frame. Pete

02-03-2009, 04:21 PM	#5
truckintexas Registered User Join Date: Jul 2004 Location: Weatherford, TX Posts: 225	Re: Frame differences between 67 and 71 This is exactly my set-up as well, and the responses so far are right on. My frame, suspension, and all chassis components are complete, so next is mounting the cab, bed, and front clip. He must remember that "frame mount" items may or may not be different between 67 and 71. He should consider this every time he buys a part. One such item is the frt bumper brackets. 71-72 were different from 67-70. Also, the brake line going from a long bed to a short bed needed to be modified. It can be done, it's just something that he will have to stay aware of constantly.

02-03-2009, 04:47 PM	#6
Ont67shortbox Registered User Join Date: May 2003 Location: Ontario Posts: 279	Re: Frame differences between 67 and 71 I have a 67 and the frame is dimpled for power steering and it has power steering, did I get an odd frame or was it later in 67 when they changed and added the dimple?

02-03-2009, 04:58 PM	#7
Tutt Registered User Join Date: Dec 2005 Location: Houston TX Posts: 77	Re: Frame differences between 67 and 71 thanks guys! anything else?

02-04-2009, 03:51 AM	#9
project 67 sub Account Suspended Join Date: Mar 2007 Location: san bernardino ca. everywhere Posts: 3,938	Re: Frame differences between 67 and 71 my 67 burb frame is dimpled for power steering to

02-05-2009, 05:43 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Frame differences between 67 and 71 the core support mounts are the same 67 - 72

02-15-2009, 07:41 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Frame differences between 67 and 71 sorry... the rubbers are the same. as soon as I saw this (10 days later) I realized I misspoke.

02-15-2009, 08:38 PM	#13
Shock_Me Senior Member Join Date: May 2005 Location: New Brunswick, Canada Posts: 591	Re: Frame differences between 67 and 71 no worries Longhorn, Any idea why GM made them different? Just seems like a strange thing to change. Pete

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