Messages

1

General Discussion / Re: Speedo Cable Color

« on: Today at 02:25:58 AM »

 Indy - Yes, Blue Gear....

 DK - If it has the factory set-up GM should have made sure it was accurate. Contact Muncie and work it out.

 Bronze - When the trans was pulled for inspection and clutch install, it looked to have never been opened up. The side cover
 gasket was original. Everything inside was in good original shape. Maybe they pulled it apart at the tail shaft? I believe I am the
 3rd owner and the car sat for almost 30 years. I am going to guess it was never apart. Who knows, I am curious to see what
 happens with some other cars. Maybe I'll post my findings. Just glad it is very accurate now. Thanx for the suggestion on gear 6-
 pack. ... Danny

2

General Discussion / Re: Speedo Cable Color

« on: September 30, 2023, 05:35:56 PM »

Well, I got it figured out. It had a 23 that was WAY off. I tried a 22 and it fixed it by 5MPH. Then I tried a 21 and an 18 and it seemed to go the wrong way. Then 20 tooth and BINGO, DEAD ON. It read perfect from 25 to 65. I was amazed how accurate it was. At 70MPH on the speedo, it read by satellite at 72. That was the only real change. And I won't be going that fast or above that speed. I was mainly concerned from 40 to 60. So if you have a M21 - 3:73 and are running Good Year E70/15's, this would be a good starting point for accuracy. Going to check some of my other cars and see what happens. I am shocked GM missed it by that much. But maybe some things changed in thousands of miles? The internal gear was in nice shape. And the 23 tooth I took out was also perfect?  Danny 

3

General Discussion / Re: 1968 CamaroZ/28 Paint Code KK

« on: September 07, 2023, 05:28:32 PM »

I posted this on CRG in 2015. Punching the VIN up on Google brings up this site ONLY. Here it is again for sale with VERY little info. Just 4 or 5 lines and no important pictures. I didn't save pad pictures, but it seems there were some cause it's talked about. Danny

  https://www.ebay.com/itm/266397907189?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20211130125621%26meid%3D859c7ca4c0d2438b97ba32ddeedbb3d5%26pid%3D101465%26rk%3D1%26rkt%3D4%26sd%3D266397907189%26itm%3D266397907189%26pmt%3D0%26noa%3D1%26pg%3D3650466&_trksid=p3650466.c101465.m3507

4

Decoding/Numbers / Re: Stamping Opinion

« on: September 06, 2023, 07:01:25 PM »

Pics.. It is endless... D

5

Decoding/Numbers / Re: Stamping Opinion

« on: September 06, 2023, 06:58:56 PM »

There is NO reason not to have good clear close-up high-resolution pictures. It's just not that tough to accomplish. SO MANY cars for sale with PERFECT pictures... THEN come the blurry Block/Trans/Rear pictures. ... Danny

6

General Discussion / Re: Speedo Cable Color

« on: September 03, 2023, 02:18:43 PM »

Well, I am looking at that speedo gear number and it says it is for an automatic? Does it matter?... Danny

      GM ACDelco 3987921 Original Equipment Automatic Transmission Speedometer Driven Gear

7

General Discussion / Re: This stamp look ok

« on: September 02, 2023, 03:10:14 PM »

Well, as the original poster, that turned into something I didn't expect. I understand both sides of this discussion. I got hammered for asking about cars too often. And expecting that it only takes 10 seconds to check the DB, I was wrong. So I have and will continue to curtail my requests. I figured the stamp was deeper on the right, like the samples above, and lighter on the left, because the gang holder was held at a slight angle. Maybe that is partially true at times. What I don't understand is what looks like sand blasting, and the removal of the factory broaching for a number's repair/change. Maybe there are some samples of that being done at the factory. I, and it seems MANY other people, had never saw that before. My friend has decided to pass on this car due to the stamp, and partially because of the price. Thanx for all the info that CAN be released. D

8

Decoding/Numbers / Re: Stamping Opinion

« on: September 01, 2023, 01:39:44 PM »

Surface rough then smooth?... Danny

9

General Discussion / Re: Speedo Cable Color

« on: August 31, 2023, 02:32:52 PM »

As far as I know the speedo is functioning properly. I installed a new cable a while back. Since I bought the car I have put about 5,000 miles on it. And the odometer shows that....

Thank you for the gear info, that is EXACTLY the info I was hoping for. I will start my gear experiment soon. D

10

General Discussion / Re: Speedo Cable Color

« on: August 30, 2023, 08:25:28 PM »

WOW.. I would have thought after 80 or 100 MPH it would be off. That's the way those old cars worked. But reading 65 but actual speed is 75, that sucks. Any trick to make it more accurate between 50 and 75?  Less teeth or more teeth? 
Using that tire chart site   373 X 20.2 = 7,534.6   Divided X 26.73 = 28. Only 17 to 24 tooth gears on the chart... SSSOOO? No 28 or 3.73 on that chart... Just thought maybe someone knew that a certain gear with my set-up is more accurate. D

11

General Discussion / Re: Speedo Cable Gear Color

« on: August 30, 2023, 02:00:51 PM »

I forgot the word gear. I don't need the trans gear info. D

12

General Discussion / Speedo Cable Color

« on: August 28, 2023, 09:27:13 PM »

I was told by a friend that I was traveling 75mph. My speedo said 65. He used a satellite application on his cell phone for the speed and pulled up to match my speed. It was EXACTLY 10mph fast. What is the speedometer cable tooth/color. It has a black one I think with 22 teeth in it now.
 Transmission is a 4-speed M21 with 3.73 rear axle gears. Tires are Good-Year Wide Tread GT with 3.73 and only 100 miles on them. I see MANY colors and charts online ALL giving different teeth counts with the same color? ... Danny

13

General Discussion / Re: This stamp look ok

« on: August 28, 2023, 09:19:31 PM »

Mr. Kurt,
 Any reason why the last 3 of the VIN are WAY bigger and WAY deeper? Why is the "M" virtually invisible? Are there other known stamps from this time period that duplicate this? Just trying to learn... D

14

General Discussion / This stamp look ok

« on: August 28, 2023, 05:35:40 PM »

My friend is looking at this car to purchase/restore. He sent me some pictures. I don't have the knowledge. Block looks sand blasted and re-stamped? My luck it's all original and a FACTORY re-stamp. Either way, I don't like it... Opinions... Danny

15

General Discussion / Re: Need Help to ID Fuel Pump

« on: July 29, 2023, 09:45:37 PM »

I appreciate the info. So if it is from the late 70's, ALL it can be is service replacement? I will post some more pic's for fun. D