Carburetor match

442 · 02-24-2008, 06:33 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, 06:42 PM

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

J-(Chicago) · 02-24-2008, 06:46 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, 06:57 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, 07:08 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, 06:33 PM	#1 (permalink)
442 70' W-30 Convertible Join Date: Mar 2007 Location: Virginia Posts: 27	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, 06:42 PM	#2 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 1,856	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, 06:46 PM	#3 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 1,856	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, 06:57 PM	#4 (permalink)
442 70' W-30 Convertible Join Date: Mar 2007 Location: Virginia Posts: 27	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 07:11 PM.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
CARBURETOR IDENTIFICATION	J-(Chicago)	Other	13	01-10-2008 05:42 PM
Carburetor issues	Gaz Hog	Big Blocks	11	10-17-2007 08:26 AM
Carburetor Gasket	TheRuss	Other	14	07-25-2007 02:22 PM
Does 1965 Olds Jetstar 88 match with other GM and olds of the same year?	hoppers69	Eighty-Eight	2	05-09-2006 09:36 PM
74 Hurst Olds numbers match, cheap	Deepsouthauto	Cars For Sale	2	03-20-2006 05:14 AM