Carburetor match

442 · 02-24-2008, 05:33 PM

Hi all,
I have a carb # 7040257 (W-33 Police package option on 70' Delta 88?) that I have been told is identical to the correct carb # 7040258 that I need for the correct restoration of my 1970 442 W-30 convertible Auto trans. car excepting the carb #. Does anyone no if this is accurate info?

Thanks,
Richard.

J-(Chicago) · 02-24-2008, 05:42 PM

7040257 455 442 A/T with or without A/C, and W-33

J-(Chicago) · 02-24-2008, 05:46 PM

Yours is a w33 carb
here's the w30 carbs:

455 W-30 M.T. (6) 7040256 7002658 - 7033655- "AU"
455 W-30 A.T. 7040258 7031969 7040701- "52C" 7033655- "AU"

52c are the primary rods and AU the secondarys

If you have an automatic, yours is a match to a 442.
a w-30 442....maybe not.

442 · 02-24-2008, 05:57 PM

Not sure what the 7040257 was off of originally. My car is an auto trans. with AC. Should have the 7040258 carb from the factory I think. I've been told these are mechanically the same carb. just different numbers. Any thoughts?

Thx,
Richard.

J-(Chicago) · 02-24-2008, 06:08 PM

Quote:

Originally Posted by 442

I've been told these are mechanically the same carb. just different numbers.

You're probably right. you can always crack it open and find out.

02-24-2008, 05:33 PM	#1 (permalink)
442 70' W-30 Convertible Join Date: Mar 2007 Location: Virginia Posts: 11	Carburetor match Hi all, I have a carb # 7040257 (W-33 Police package option on 70' Delta 88?) that I have been told is identical to the correct carb # 7040258 that I need for the correct restoration of my 1970 442 W-30 convertible Auto trans. car excepting the carb #. Does anyone no if this is accurate info? Thanks, Richard.

02-24-2008, 05:42 PM	#2 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 1,588	7040257 455 442 A/T with or without A/C, and W-33 __________________ I'd rather have a numbers matching poker hand.

02-24-2008, 05:46 PM	#3 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 1,588	Yours is a w33 carb here's the w30 carbs: 455 W-30 M.T. (6) 7040256 7002658 - 7033655- "AU" 455 W-30 A.T. 7040258 7031969 7040701- "52C" 7033655- "AU" 52c are the primary rods and AU the secondarys If you have an automatic, yours is a match to a 442. a w-30 442....maybe not. __________________ I'd rather have a numbers matching poker hand.

02-24-2008, 05:57 PM	#4 (permalink)
442 70' W-30 Convertible Join Date: Mar 2007 Location: Virginia Posts: 11	Not sure what the 7040257 was off of originally. My car is an auto trans. with AC. Should have the 7040258 carb from the factory I think. I've been told these are mechanically the same carb. just different numbers. Any thoughts? Thx, Richard. Last edited by 442 : 02-24-2008 at 06:11 PM.

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