CRG Discussion Forum

Camaro Research Group Discussion => Originality => Topic started by: Ron C. on April 18, 2007, 04:04:38 PM

Title: 67 Z/28 WATER PUMP
Post by: Ron C. on April 18, 2007, 04:04:38 PM

I know we have talked about this before with different opinions, I have a waterpump with a number on the front 3858326, is this the correct pump for a 03b z/28? I want to make sure before I send it out to get rebuilt.thanks Ron.

Title: Re: 67 Z/28 WATER PUMP
Post by: 1968RSZ28 on April 18, 2007, 05:56:44 PM

Ron -

The 3858326 casting number is correct for the '67 and '68 Z/28 per Jerry MacNeish's book.  Just make sure the date code on it is correct for your 03B car.  Other casting numbers were also used.  For example, my '68Z's water pump has casting number 3859326 on it.  Good luck.   :)

Paul

Title: Re: 67 Z/28 WATER PUMP
Post by: Ron C. on April 18, 2007, 06:31:41 PM

Thanks Paul.  ;D

Title: Re: 67 Z/28 WATER PUMP
Post by: Jerry@CHP on April 19, 2007, 01:21:50 AM

There are variations on the NPT hole in the water pump and both are acceptable.  Some factory cars had a 3/4" NPT reducer to adapt the 1/2" NPT bypass fitting.  More on this in the new 4th edition Z28 book out soon,

Jerry

Title: Re: 67 Z/28 WATER PUMP
Post by: JohnKY on April 08, 2023, 01:31:32 AM

Quote from: Jerry@CHP on April 19, 2007, 01:21:50 AM

There are variations on the NPT hole in the water pump and both are acceptable.  Some factory cars had a 3/4" NPT reducer to adapt the 1/2" NPT bypass fitting.  More on this in the new 4th edition Z28 book out soon,

Jerry

Sorry to resurrect an old old thread. Was the reducing bushing in the top of the water pump the hex head type, or a face bushing? Face bushing = threads only, no hex drive.
Using the hex bushing seem to raise the outlet ell a little to high to meet the intake fitting.

Title: Re: 67 Z/28 WATER PUMP
Post by: JohnKY on April 08, 2023, 04:27:09 AM

And interfere with the A.I.R pump. With the height of bypass ELL due to the hex head bushing.

Title: Re: 67 Z/28 WATER PUMP
Post by: 169INDY on April 08, 2023, 04:35:38 AM

Bushing Straight Reducing Adapters
Low-Pressure Pipe Fitting, Galvanized Steel, Bushing Adapter, 3/4 Male x 1/2 Female NPT
Mcmaster-Carr
PN    4638K357