Spid Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Already Gone** · 12-26-2011, 06:05 PM

I found this truck for sale and the owner sent me pic of the spid. I see the code for "Manual Throttle" and my question is, by 1971 didn't all the trucks have an automatic choke on them? With that being said maybe a "Manual Throttle" was available because, depending on what you wanted to do with the truck, you may need it to stay revved up for sustained periods.

blkcorvair · 12-26-2011, 06:24 PM

Maybe was that like a throttle lock? Didnt they have some type of cruise control option?

**DANTIP** · 12-26-2011, 06:56 PM

I like to call it poor man's cruise control. As explained it is a dash controlled cable that will maintain a set throttle position. I would use it like cruise (the speed would just go up and down depending on hills, wind etc.). Cool Option!

**too much stuff** · 12-26-2011, 07:20 PM

The manual throttle had nothing to do with the choke. For some reason i have seen quite a few manual throttles on blazers. And yes, it just held the throttle at a certain rpm.

71 super · 12-26-2011, 11:58 PM

My 72 4x4 has the manual throttle. Farmers used them because it turned feeding the livestock into a one man job. Set the throttle, put trans in low gear and throw hay bales as truck eased down the feed line.

Longhorn Man · 12-27-2011, 12:18 AM

They were also common on trucks that carried campers. It would be used to chearge up the battery(s) and/or to keep the coolant heated up if the owner added a second heater run off the engine cooling system. This truck looks like it may have been optioned for camper duty.
Posted via Mobile Device

**70cst** · 12-27-2011, 12:41 AM

Quote:

Originally Posted by Longhorn Man

They were also common on trucks that carried campers. It would be used to chearge up the battery(s) and/or to keep the coolant heated up if the owner added a second heater run off the engine cooling system. This truck looks like it may have been optioned for camper duty.
Posted via Mobile Device

Good info LHM

MagmaJct · 12-27-2011, 12:57 AM

The option is discussed in my `71 owner's manual.

**Already Gone** · 12-27-2011, 01:38 AM

Quote:

Originally Posted by MagmaJct

The option is discussed in my `71 owner's manual.

I have a 71 owners manual downstairs, I'll look it up.
Posted via Mobile Device

**Already Gone** · 12-27-2011, 01:46 AM

Quote:

Originally Posted by Longhorn Man

They were also common on trucks that carried campers. It would be used to chearge up the battery(s) and/or to keep the coolant heated up if the owner added a second heater run off the engine cooling system. This truck looks like it may have been optioned for camper duty.
Posted via Mobile Device

Its been family owned since 1973, and do not think it has seen much Camper Duty. Apparently it had been parked in a barn since 1982 and was taken out last spring where all the fluids were changed and the gas tank removed and cleaned. and it has been driven around daily since then. If I buy it i wanted to drive it home but because of the long sitting (even though its being daily driven ) I will have it shipped the 1200 miles to here.
Posted via Mobile Device

bobs409 · 12-27-2011, 07:27 AM

I would think most anything that has a PTO should have one.

My wrecker of all things did not come with one but had one added when it was converted to a wrecker by that company. (truck was a cab/chassis from factory)

12-26-2011, 06:05 PM	#1
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,139	Spid Question I found this truck for sale and the owner sent me pic of the spid. I see the code for "Manual Throttle" and my question is, by 1971 didn't all the trucks have an automatic choke on them? With that being said maybe a "Manual Throttle" was available because, depending on what you wanted to do with the truck, you may need it to stay revved up for sustained periods. Attached Images __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

12-26-2011, 06:24 PM	#2
blkcorvair Registered User Join Date: May 2011 Location: Long Island NY Posts: 787	Re: Spid Question Maybe was that like a throttle lock? Didnt they have some type of cruise control option?

12-26-2011, 06:56 PM	#3
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,889	Re: Spid Question I like to call it poor man's cruise control. As explained it is a dash controlled cable that will maintain a set throttle position. I would use it like cruise (the speed would just go up and down depending on hills, wind etc.). Cool Option!

12-26-2011, 07:20 PM	#4
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,768	Re: Spid Question The manual throttle had nothing to do with the choke. For some reason i have seen quite a few manual throttles on blazers. And yes, it just held the throttle at a certain rpm. __________________ 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

12-26-2011, 11:58 PM	#5
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,081	Re: Spid Question My 72 4x4 has the manual throttle. Farmers used them because it turned feeding the livestock into a one man job. Set the throttle, put trans in low gear and throw hay bales as truck eased down the feed line. __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

12-27-2011, 12:18 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Spid Question They were also common on trucks that carried campers. It would be used to chearge up the battery(s) and/or to keep the coolant heated up if the owner added a second heater run off the engine cooling system. This truck looks like it may have been optioned for camper duty. Posted via Mobile Device

12-27-2011, 12:57 AM	#8
MagmaJct Registered User Join Date: May 2008 Location: Mesa, AZ Posts: 281	Re: Spid Question The option is discussed in my `71 owner's manual. __________________ I own 3 classic vehicles. 1971 LWB C10 Deluxe. 1974 VW Super Beetle. 1971 VW Fastback. The C10 and the Super Beetle run, the Fastback is just not there yet! Please visit my Super Beetle and Fastback profile on TheSamba.

12-27-2011, 07:27 AM	#11
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	Re: Spid Question I would think most anything that has a PTO should have one. My wrecker of all things did not come with one but had one added when it was converted to a wrecker by that company. (truck was a cab/chassis from factory) __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.