4053 Carb question.

[z28z11]

"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 -   

[firstgenaddict]

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.

[68camaroz28]

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......

[z28z11]

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

[69Z28freak]

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.

[woodsman1172]

That is the later, thicker baseplate Mike.

[69Z28freak]

Thanks Steve good to know.  How does the rest of the carb look?

[69Z28]

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.

[69Z28freak]

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

[69Z28]

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.

[69Z28freak]

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

[MyRed67]

   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.

[rszmjt]

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.

[1968RSZ28]

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

[zman1969]

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?