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01-06-2025, 12:49 PM
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#1 |
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Registered User
Join Date: Jan 2013
Location: 3,018 feet above the SoCal/Mojave Desert region.
Posts: 377
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What's the extra hole in the cluster bezel?
It's on the right side under the wiper-washer.
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01-06-2025, 01:08 PM
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#2 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,041
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Re: What's the extra hole in the cluster bezel?
It’s for a manual throttle
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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01-06-2025, 02:10 PM
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#3 | |
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Registered User
Join Date: Jan 2013
Location: 3,018 feet above the SoCal/Mojave Desert region.
Posts: 377
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Re: What's the extra hole in the cluster bezel?
Quote:
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01-06-2025, 03:08 PM
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#4 |
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All stock and staying that way
  
Join Date: Jul 2003
Location: Elkland, PA
Posts: 1,883
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Re: What's the extra hole in the cluster bezel?
It is a cable operated mechanism that attaches to the throttle linkage that raises and maintains engine speed above idle.
My 1970 Blazer was ordered with it. My dad used it to raise the idle speed up enough to for the alternator to run the all of emergency lights at fire scenes. The knob/mechanism on a 1970 is on the other side of the cluster, under the headlight switch. 1971/72 manual throttle was located under the wiper/washer switch.
__________________
1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion..  1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...  2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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01-06-2025, 09:30 PM
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#5 |
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Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,231
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Re: What's the extra hole in the cluster bezel?
.
I'm wondering if people used this as sort of a poor mans cruise control back in the day...could be a bit dangerous I suppose though. -Kevin
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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Yesterday, 01:07 PM
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#6 |
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Senior Member
Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,444
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Re: What's the extra hole in the cluster bezel?
Wasn't that hole used for manual choke on 67/68 models?
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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Yesterday, 01:49 PM
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#7 |
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All stock and staying that way
Join Date: Jul 2003
Location: Elkland, PA
Posts: 1,883
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Re: What's the extra hole in the cluster bezel?
1967-68 choke location:
__________________
1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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Yesterday, 02:10 PM
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#8 |
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All stock and staying that way
Join Date: Jul 2003
Location: Elkland, PA
Posts: 1,883
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Re: What's the extra hole in the cluster bezel?
1968 with either 327 or 396:
__________________
1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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Yesterday, 05:08 PM
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#9 | |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,750
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Re: What's the extra hole in the cluster bezel?
Quote:
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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Yesterday, 07:40 PM
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#10 |
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How did I get this OLD!
Join Date: Dec 2014
Location: Lamont County, AB, CANADA
Posts: 1,051
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Re: What's the extra hole in the cluster bezel?
You can pull the knob out to lock the RPM or twist it left or right to speed up or slow down. AKA Redneck Cruise Control. Only the brake pedal doesn't disconnect the cruise.
http://67-72chevytrucks.com/vboard/a...1&d=1736293030
__________________
1967 Oshawa built LWB Fleetside. 327,3 OTT, 515 Vermilion, CST, PS, PB, Shoulder Harness, Tach,Vac, Speed Warning, Choke Delete, Manual Throttle, Fawn interior. Dealer installed A/C 04/2015, N34 Rosewood Wheel 06/2023 Members who I have met personally. Metaldoc, chevnkevin, 62 Longbed, 72LHorn, 72MARIO, YBNORML, TBONE1964, Classic Bowties, Chevemall, Dagnabbitt. |
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Yesterday, 08:15 PM
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#11 | |
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Senior Member
Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,528
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Re: What's the extra hole in the cluster bezel?
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On 67/68s, the Wipers and Headlights are on the left, so it could be both. As for the Red Neck Cruise Control -- there used to be a joke about a Middle Eastern Foreign Student [Pre Iranian Islamic Revolution, and way before 9/11/2001] who thought it was just like Autopilot in an airplane, and set it at highway speed to go back into the galley of his big camper and make himself a sandwich. He was surprized when the camper rolled. Most likely an urban legend, as they won't work that high an RPM, we're told.
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; Yesterday at 08:24 PM. |
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Yesterday, 08:33 PM
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#12 | |
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Moderator
Join Date: May 2007
Location: Southern Cal
Posts: 20,041
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Re: What's the extra hole in the cluster bezel?
Quote:
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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Yesterday, 10:03 PM
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#13 | |
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Senior Member
Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,528
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Re: What's the extra hole in the cluster bezel?
Quote:
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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Today, 12:41 AM
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#14 |
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Senior Member
Join Date: Dec 1999
Location: Southern California
Posts: 2,903
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Re: What's the extra hole in the cluster bezel?
I would think a main use of the manual throttle would be to control the engine RPM when a PTO is used. Think not so common to see a PTO on 67-72 truck. Maybe more common on the 40+ series trucks?
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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Today, 05:07 AM
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#15 |
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Junior Member
Join Date: Apr 2023
Location: Edmonton,Alberta, Canada
Posts: 86
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Re: What's the extra hole in the cluster bezel?
My manual chock was there to increase rpm while operating winch.
It doesn't work as a cruise way too slow. I tried it 35 years ago. |
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Today, 04:28 PM
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#16 |
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Registered User
Join Date: Dec 2001
Location: harvard, il. USA
Posts: 395
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Re: What's the extra hole in the cluster bezel?
I was told the throttle rod was to increase RPM to allow the alternator to recharge the battery when my truck had a camper, 5th wheel trailer.
The OP's post of this lever got me to look at pics of my dash. My lever is on the left side, under the head light knob....   Looking close at the 1st pic, it seems like the location of my throttle lever was done as a shade tree fix. Note the black plastic under the bezel. 100%...I dunno but still like my truck. FWIW....I've never tried it, to see if the RPM's increase...Don. |
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Today, 04:46 PM
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#17 | |
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How did I get this OLD!
Join Date: Dec 2014
Location: Lamont County, AB, CANADA
Posts: 1,051
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Re: What's the extra hole in the cluster bezel?
That black plastic place card under the chrome nut is a factory item. They were also use under the manual choke on 68’s and possibly other years.
Quote:
__________________
1967 Oshawa built LWB Fleetside. 327,3 OTT, 515 Vermilion, CST, PS, PB, Shoulder Harness, Tach,Vac, Speed Warning, Choke Delete, Manual Throttle, Fawn interior. Dealer installed A/C 04/2015, N34 Rosewood Wheel 06/2023 Members who I have met personally. Metaldoc, chevnkevin, 62 Longbed, 72LHorn, 72MARIO, YBNORML, TBONE1964, Classic Bowties, Chevemall, Dagnabbitt. |
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