1970-1972 Cab differences? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bram · 01-05-2004, 04:45 PM

Can anyone tell me the major differences between the 70, 71, and 72 cabs? Was it 71, and 72 that they changed the gas pedal? Was 72 the only year that had the screw up by the vent window on the door? Thanks

**too much stuff** · 01-05-2004, 06:17 PM

71-72 had the different gas pedal. (didn't mount to the floor) 72 was first year for rear view mirror on windshield. 72 doors had the screw hole inside up by wing window.

**CPNE** · 01-05-2004, 06:18 PM

Also, a 71 cab has a unique stamping where the cab rear view mirror mounts above windshield.

Dean · 01-05-2004, 06:41 PM

I noticed the 71 has what I will call a plastic air vent below the driver's door striker plate.

da-burb · 01-06-2004, 12:32 AM

That vent is a 72 thing, posibly a real late 71, but I have only seen them in 72's. It helps with better air flow through the cab. It allows doors to be shut with out really slamming them. In 5 or 10 years when the rockers rust off or a hole develops in the floor it really doesn't do anything anymore.

Hooter · 01-06-2004, 01:05 AM

they worked for the first 10 years though

**too much stuff** · 01-06-2004, 01:31 AM

My 71 cheyenne has the vents in the door jambs. When did the interior light switch show up in the door jamb? Or was it avalaible on the top-of-the-line trucks?

Longhorn Man · 01-06-2004, 01:43 AM

The light switch was an option starting in 69 I believe.

Hooter · 01-06-2004, 03:11 AM

I wasn't aware that the door jamb switch was an option?

Longhorn Man · 01-06-2004, 08:15 AM

Yup, although it came in the CST trucks (and later cheyennes) as part of the package.

Dean · 01-06-2004, 08:45 AM

My two 71s have the door vent. Maybe they are late 71s.

*Gee_Emm* · 01-06-2004, 11:21 AM

The pillar vents are 71-72 things, they go in conjuction with the eec fuel system, 71 and 72 cabs will also have two extra holes in the floor near the gas and there will be lines running half way up the pillar behind the passenger door.

**CPNE** · 01-06-2004, 11:25 AM

Quote:

Originally posted by Longhorn Man
Yup, although it came in the CST trucks (and later cheyennes) as part of the package.

In 71 and 72 door jamb switches was part of the custom comfort and convenience option, so custom deluxes got them too.

01-05-2004, 04:45 PM	#1
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	1970-1972 Cab differences? Can anyone tell me the major differences between the 70, 71, and 72 cabs? Was it 71, and 72 that they changed the gas pedal? Was 72 the only year that had the screw up by the vent window on the door? Thanks __________________ 72CheyenneSuper1ton4x4BigBlock

01-05-2004, 06:17 PM	#2
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,768	71-72 had the different gas pedal. (didn't mount to the floor) 72 was first year for rear view mirror on windshield. 72 doors had the screw hole inside up by wing window. __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

01-05-2004, 06:18 PM	#3
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Also, a 71 cab has a unique stamping where the cab rear view mirror mounts above windshield. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

01-06-2004, 12:32 AM	#5
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	That vent is a 72 thing, posibly a real late 71, but I have only seen them in 72's. It helps with better air flow through the cab. It allows doors to be shut with out really slamming them. In 5 or 10 years when the rockers rust off or a hole develops in the floor it really doesn't do anything anymore. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

01-06-2004, 01:05 AM	#6
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	they worked for the first 10 years though __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

01-05-2004, 06:41 PM	#4
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	I noticed the 71 has what I will call a plastic air vent below the driver's door striker plate.

01-06-2004, 01:31 AM	#7
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,768	My 71 cheyenne has the vents in the door jambs. When did the interior light switch show up in the door jamb? Or was it avalaible on the top-of-the-line trucks? __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

01-06-2004, 01:43 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	The light switch was an option starting in 69 I believe.

01-06-2004, 03:11 AM	#9
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	I wasn't aware that the door jamb switch was an option? __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

01-06-2004, 08:15 AM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Yup, although it came in the CST trucks (and later cheyennes) as part of the package.

01-06-2004, 08:45 AM	#11
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	My two 71s have the door vent. Maybe they are late 71s.

01-06-2004, 11:21 AM	#12
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	The pillar vents are 71-72 things, they go in conjuction with the eec fuel system, 71 and 72 cabs will also have two extra holes in the floor near the gas and there will be lines running half way up the pillar behind the passenger door.

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