help! correct carb for a 1971 c10 auto 402

[yote1234]

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]

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]

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]

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

[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.

[Mike's money pit]

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]

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]

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]

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