help! correct carb for a 1971 c10 auto 402 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**yote1234** · 01-18-2014, 03:25 PM

i have spent 2 hours looking for the correct number for a correct carb for a 1971 c10 auto, 402 2wheel drive. the best i can do is
70412???

can anyone help? thx,dave

Mike's money pit · 01-18-2014, 03:44 PM

Hi Dave,

I believe my 71 402 has the original carb. It is a 7041209 IM. Here is a picture. Hope this helps you out,

Mike

70LonghornCST · 01-18-2014, 03:53 PM

For an automatic transmission 49 state non-CA or non-high altitude Chevy truck it should be one of the following:
7041202
7041204
7041206
7041208
7041212
7041214
7041216
7041218
7041222
7041224
7041226
7041228

For a manual transmission 49 state non-CA or non-high altitude Chevy truck it should be one of the following:
7041203
7041205
7041207
7041209
7041213
7041215
7041217
7041219
7041223
7041225
7041227
7041229

For an automatic transmission CA or high altitude Chevy truck it should be one of the following:
7041502
7041504
7041506
7041508
7041512
7041514
7041516
7041518
7041522
7041524
7041526
7041528

Hello Dave!

For a manual transmission CA or high altitude Chevy truck it should be one of the following:
7041503
7041505
7041507
7041509
7041513
7041515
7041517
7041519
7041523
7041525
7041527
7041529

SS Tim · 01-18-2014, 04:14 PM

Easiest place to start is the factory manuals. Then refine from there.

Mike's money pit · 01-18-2014, 05:46 PM

Let me first admit that I am a complete novice with these trucks. I recently bought a 1971 big block truck that was built in Atlanta. Just judging from the dates I have pulled, I believe the truck is very original. It even still had a set of dry rotted bias ply tires on the rear with a good bit of tread remaining. My transmission, engine, rear-end, and intake are all dated early May of 1971. I am giving all this background to say my info is strictly based on what is on my truck which I think is original to the truck. My carb is a 7041209 (pictured above). If I am interpreting the date code correctly, it was built on April 13, 1971 (103rd day of 1971). I assume this would be a correct date for my truck since it is about a month before my engine assembly date.

I pulled another page ( the next page, page 452) out of the 71 C10 manual that is linked in SSTim's signature. That info specifies a 7041209 for both automatic and manual transmission trucks.

Mike's money pit · 01-18-2014, 05:49 PM

Tim,

I don't know why mine posted as a link. Would you mind posting an image of the next page from the manual (page 452)?

Thank you

**yote1234** · 01-18-2014, 08:13 PM

FIRST OF ALL !!! great responce!!! thats why i have been with this site for over 11 years. every one here is like a wherehouse of information!!! i love it. ..... now, so the 7041209 is correct even for an automatic? thats wild! now. anyone have one for sale? im looking! thanx again everyone. this site and everyone in it rocks!.

dave

**yote1234** · 01-18-2014, 08:25 PM

Quote:

Originally Posted by Mike's money pit

Let me first admit that I am a complete novice with these trucks. I recently bought a 1971 big block truck that was built in Atlanta. Just judging from the dates I have pulled, I believe the truck is very original. It even still had a set of dry rotted bias ply tires on the rear with a good bit of tread remaining. My transmission, engine, rear-end, and intake are all dated early May of 1971. I am giving all this background to say my info is strictly based on what is on my truck which I think is original to the truck. My carb is a 7041209 (pictured above). If I am interpreting the date code correctly, it was built on April 13, 1971 (103rd day of 1971). I assume this would be a correct date for my truck since it is about a month before my engine assembly date.

I pulled another page ( the next page, page 452) out of the 71 C10 manual that is linked in SSTim's signature. That info specifies a 7041209 for both automatic and manual transmission trucks.

hi mike..is yours automatic?

Mike's money pit · 01-18-2014, 10:04 PM

Quote:

Originally Posted by yote1234

hi mike..is yours automatic?

Yes, my truck is an original 1971 402 with the automatic transmission. From what I have read, the even number for auto / odd number for manual transmission is not a hard and fast rule. If you can pull up the adobe link in my other post, it clearly show automatic/manual listed by the 7041209 carb in the assembly manual.

Hope this helps,
Mike

**yote1234** · 01-20-2014, 11:11 AM

thx.... thats the one i need! thx,dave

**Joesjunk** · 01-20-2014, 12:34 PM

Did you buy another big block truck Dave?

**yote1234** · 01-20-2014, 02:22 PM

Quote:

Originally Posted by Joesjunk

Did you buy another big block truck Dave?

umm.. yea... will get pics of it soon.

**Joesjunk** · 01-20-2014, 09:24 PM

Cool! Must have pics!! BTW, the blue shorty is going to be in the world of wheels in KC next month

**yote1234** · 01-21-2014, 05:47 PM

Quote:

Originally Posted by Joesjunk

Cool! Must have pics!! BTW, the blue shorty is going to be in the world of wheels in KC next month

thats great!!!! that truck needs to go on a "show " curcut! or in a musieum! beautifull.

01-18-2014, 03:25 PM	#1
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,406	help! correct carb for a 1971 c10 auto 402 i have spent 2 hours looking for the correct number for a correct carb for a 1971 c10 auto, 402 2wheel drive. the best i can do is 70412??? can anyone help? thx,dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

01-18-2014, 03:44 PM	#2
Mike's money pit Registered User Join Date: Nov 2012 Location: Atlanta Posts: 553	Re: help! correct carb for a 1971 c10 auto 402 Hi Dave, I believe my 71 402 has the original carb. It is a 7041209 IM. Here is a picture. Hope this helps you out, Mike Attached Images

01-18-2014, 03:53 PM	#3
70LonghornCST Moderator Join Date: Jun 2008 Location: Modesto, CA Posts: 5,775	Re: help! correct carb for a 1971 c10 auto 402 For an automatic transmission 49 state non-CA or non-high altitude Chevy truck it should be one of the following: 7041202 7041204 7041206 7041208 7041212 7041214 7041216 7041218 7041222 7041224 7041226 7041228 For a manual transmission 49 state non-CA or non-high altitude Chevy truck it should be one of the following: 7041203 7041205 7041207 7041209 7041213 7041215 7041217 7041219 7041223 7041225 7041227 7041229 For an automatic transmission CA or high altitude Chevy truck it should be one of the following: 7041502 7041504 7041506 7041508 7041512 7041514 7041516 7041518 7041522 7041524 7041526 7041528 Hello Dave! For a manual transmission CA or high altitude Chevy truck it should be one of the following: 7041503 7041505 7041507 7041509 7041513 7041515 7041517 7041519 7041523 7041525 7041527 7041529 Attached Images __________________ 2018 Chevy Crew Cab 2006 Impala SS 1965 Plymouth Sport Fury 1970 Chevy Longhorn Bucket Seats Shoulder Belts Front Tow Hooks Factory Air Factory Speedwarning, Tach & Vaccum Factory Tilt CST Package AM/FM Radio Bumper Guards Richard 70 Longhorn CST Build Adding an AM/FM Decal

01-18-2014, 04:14 PM	#4
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: help! correct carb for a 1971 c10 auto 402 Easiest place to start is the factory manuals. Then refine from there. Attached Images __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

01-18-2014, 05:49 PM	#6
Mike's money pit Registered User Join Date: Nov 2012 Location: Atlanta Posts: 553	Re: help! correct carb for a 1971 c10 auto 402 Tim, I don't know why mine posted as a link. Would you mind posting an image of the next page from the manual (page 452)? Thank you

01-18-2014, 08:13 PM	#7
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,406	Re: help! correct carb for a 1971 c10 auto 402 FIRST OF ALL !!! great responce!!! thats why i have been with this site for over 11 years. every one here is like a wherehouse of information!!! i love it. ..... now, so the 7041209 is correct even for an automatic? thats wild! now. anyone have one for sale? im looking! thanx again everyone. this site and everyone in it rocks!. dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

01-20-2014, 11:11 AM	#10
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,406	Re: help! correct carb for a 1971 c10 auto 402 thx.... thats the one i need! thx,dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

01-20-2014, 12:34 PM	#11
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,705	Re: help! correct carb for a 1971 c10 auto 402 Did you buy another big block truck Dave? __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

01-20-2014, 09:24 PM	#13
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,705	Re: help! correct carb for a 1971 c10 auto 402 Cool! Must have pics!! BTW, the blue shorty is going to be in the world of wheels in KC next month __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale



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