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| | |-+  4053 Carb question.
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Author Topic: 4053 Carb question.  (Read 4071 times)
z28z11
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« Reply #15 on: February 27, 2013, 08:58:24 PM »

"3496" should equate to the 349th day of '86, M6 on the box is probably December '86. Stored in the house since purchase, taking up space in my office until I finally decided to make the swap -   
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1968 Z28 BRG/W
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1969 Z11 L48
firstgenaddict
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« Reply #16 on: February 27, 2013, 09:15:33 PM »

The base plate differences are not so minor... most guys who have restored a higher end Z know the early baseplates don't have re-enforcing and are prone to break an ear. Original baseplates are not all that easy to locate.
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James
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Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
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68camaroz28
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« Reply #17 on: February 27, 2013, 09:53:03 PM »

The base plate differences are not so minor... most guys who have restored a higher end Z know the early baseplates don't have re-enforcing and are prone to break an ear. Original baseplates are not all that easy to locate.
And can be expensive if someone knows what they have......
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Chick
68 Z/28 NOR 01B Orig motor/trans/rear
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z28z11
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« Reply #18 on: February 27, 2013, 11:44:16 PM »

I don't doubt it.

Good thing both of my Z's have good ones. I'm using the repop plate on the 4346 build - it started as a center section only anyway, and visually it looks pretty good. I need to check out the part number cast on the throttle plate to see if it matches the Holley parts listing I have. You do have to look pretty darn close to see the differences -

Regards,
Steve
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1968 Z28 BRG/W
1969 Z28 X77 LeMans/W
1969 X66 L78 Cortez/BVT
1969 Z11 L48
69Z28freak
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« Reply #19 on: March 11, 2013, 01:48:57 AM »

Hi Gary here is a picture of a 4053 I found that has just been restored. I just had it on the dyno and it works great.





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Mike 1969 Grandma Camaro
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« Reply #20 on: March 11, 2013, 02:40:31 AM »

That is the later, thicker baseplate Mike.
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69Z28freak
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« Reply #21 on: March 11, 2013, 03:30:40 AM »

Thanks Steve good to know.  How does the rest of the carb look?
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Mike 1969 Grandma Camaro
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« Reply #22 on: March 11, 2013, 12:30:48 PM »

I can't tell from the pics but is the nipple on the dashpot straight or curved? What really should it be?



Hi Gary here is a picture of a 4053 I found that has just been restored. I just had it on the dyno and it works great.






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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
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« Reply #23 on: March 11, 2013, 10:43:19 PM »

Hey Gary where do I find the nipple on the dash pot?
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Mike 1969 Grandma Camaro
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« Reply #24 on: March 11, 2013, 11:09:33 PM »

Mike. The dash pot is an older mechanics term for the vacuum pull off on the passenger side of the carb. You know...the thing of the thing of the thing where you have the little vacuum hose hook up for the smog stuff?!! On the OEM's it is a curved, and it looks like so far all the replacement and new carbs are straight.

The thing in the middle of the pic. This one is curved.
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GaryC

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« Reply #25 on: March 12, 2013, 01:23:01 AM »

Thanks Gary. I will check tomorrow. I was told it is an original carb that was rebuilt and refinished.
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Mike 1969 Grandma Camaro
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« Reply #26 on: March 12, 2013, 01:58:51 AM »

   New "Curved-neck" Choke Pull-offs are out there, here's one;
http://www.ebay.com/itm/1966-70-CHOKE-PULL-OFF-HOLLEY-CURVED-PIPE-NOS-CHEVELLE-CAMARO-CHEVY-II-FULL-SIZE-/251030805006?pt=Motors_Car_Truck_Parts_Accessories&hash=item3a729a1a0e&vxp=mtr
    These are one "Quick glance" sign to original or not.
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1967 Camaro  LOS  11A
Original Engine   Z - Tribute
Mike C.    NW - Illinois
rszmjt
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« Reply #27 on: March 12, 2013, 10:51:23 AM »

FWIW - Most Later issue repo & service date 4053 carbs also have the wrong accelerator pump body & retainer screws and accellorator pump adjuster bolt/spring setup. Original production ine installed 4053 housings use clutch screws and the adjuster bolt never used a nyloc nut , they had a screw the other way with a t nut setup against the pump housing arm. Also the base idle adjustment screw was a different design.
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1968RSZ28
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« Reply #28 on: March 12, 2013, 11:33:39 AM »

Hey Gary where do I find the nipple on the dash pot?

Thanks Gary. I will check tomorrow. I was told it is an original carb that was rebuilt and refinished.

Mike,

The nipple appears straight in the photos you posted.

Paul
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zman1969
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« Reply #29 on: May 22, 2013, 07:42:36 AM »

FWIW - Most Later issue repo & service date 4053 carbs also have the wrong accelerator pump body & retainer screws and accellorator pump adjuster bolt/spring setup. Original production ine installed 4053 housings use clutch screws and the adjuster bolt never used a nyloc nut , they had a screw the other way with a t nut setup against the pump housing arm. Also the base idle adjustment screw was a different design.
can you show a picture of this please?
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Rich

69 RS/Z DZ302 Daytona bumble bee
69 T/A clone LS6/6sp
69 Nova SS 396
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