351 V6 - Running too Rich?

[AndrewJoey]

Any advice on tuning up my 351? I'm new to working on engines, it runs and drives, but seems to backfire when I get on the gas. My father in law said it might have a carb issue or maybe a distributor issue because he thinks it's getting too much gas.
http://i1119.photobucket.com/albums/k640/AndrewJoey/DSCN0294_zps4a59a9c2.jpg

[AndrewJoey]

Any ideas what the carb rebuild kit number is, or the carb #? All I could find was -
"Bendix Stromberg Model WWC"

http://i1119.photobucket.com/albums/k640/AndrewJoey/E7C53B74-1D15-4685-83AD-40D38DF71B83-6195-00000515730F1594_zps141870c9.jpg
http://i1119.photobucket.com/albums/k640/AndrewJoey/6A4C7F19-49FE-45F1-A70E-4B74FB384296-6195-000005158C8727BA_zpsf177cd9c.jpg

[Funky61]

RockAuto still has kits listed or do the Holley conversion and there is one ebay already rebuilt

http://www.ebay.com/itm/1969-GMC-carburetor-v6-351m-401M-478mm-/380660582946?pt=Vintage_Car_Truck_Parts_Accessorie s&hash=item58a1238a22&vxp=mtr
stromberg 23-228 381270, 381285 carburetor with manual choke

1968 GMC C25/C2500 PICKUP 5.7L 351cid V6 : Fuel/Air : Carburetor Repair Kit Price



GUARANTEED PARTS Part # 96154
Carburetor Kit 2 BBL,STROMBERG EQPD; Engine Code 351 [Wholesaler Closeout -- 30 Day Warranty] (Only 4 Remaining)

$4.26


STANDARD MOTOR PRODUCTS Part # 429 {Click Info Link for Alternate/OEM Part Numbers} Hygrade Jiffy Kit for STROMBERG #23-184
Carburetor Kit 2 BBL,STROMBERG EQPD; Engine Code 351

Choose:

$5.62



STANDARD MOTOR PRODUCTS Part # 526A For Stromberg 2 Bbl. Carb.
Carburetor Kit 2 BBL and E ENG CODE,STROMBERG EQPD; Engine Code 351

[FetchMeAPepsi]

On a stupid phone - sorry 4 spelling .
My build has a complete teardown & rebld . It's called "slow dd build Cecilia" . Walks you rt thru it step by step
GL!

[AndrewJoey]

Thanks bro. So if I get a carb rebuild kit with this number, I'll be good to go!
23-228 381270

[Funky61]

Here is the direct link to those part numbers.

http://www.rockauto.com/catalog/x,carcode,1494365,parttype,5964

Those were just some of the numbers listed; follow that link to double check.

[AndrewJoey]

Here is the direct link to those part numbers.

http://www.rockauto.com/catalog/x,carcode,1494365,parttype,5964

Those were just some of the numbers listed; follow that link to double check.

All done, rebuilt the carb, new ignition, coil, runs great, sounds great.
Just seems to be a cold starter, have to use a quick shot of starting fluid.
http://i1119.photobucket.com/albums/k640/AndrewJoey/F9319179-5A64-4343-8DB4-F841FC06CBA9-785-000000F69C9D09C7_zpse3908499.jpg