Messages

46

General Discussion / Need Help to ID Fuel Pump

« on: July 28, 2023, 05:45:28 AM »

This is a double embossed AC pump. It has 2 -1/4" fittings. The numbers I could find on it are 280R40510... Then on the bottom can S942 and 4701. Appreciate any help... Danny

47

General Discussion / Info on VIN

« on: July 26, 2023, 06:54:38 PM »

Found a '68 BY Z/28. Or what I THINK might be a Z/28. Cowl tag shows 07C NOR169687. Anybody have any info available for this VIN 124378N468661. Thanx... Danny

48

General Discussion / Re: Oil Pan Plug Gasket

« on: July 16, 2023, 01:15:10 AM »

Thanx for that number. I located one NOS for $25.. I may go with Dorman for now... D

49

General Discussion / Oil Pan Plug Gasket

« on: July 15, 2023, 12:46:10 AM »

This could be a dumb question. 
 
 Are the oil pan plug gaskets all the same for small block and BB? I saw some for sale online and the application said only fits a certain BB engine. I need 3 or 4 for small block. Anyone have a part number or supplier that has a direct replacement that we know looks like the originals? Danny

50

General Discussion / Re: Holley Carb Issues

« on: June 30, 2023, 09:23:27 PM »

NOPE, still need one.. 134-103  D

51

General Discussion / Re: Holley Carb Issues

« on: June 30, 2023, 08:40:03 PM »

I think I found one... D

52

General Discussion / Re: Holley Carb Issues

« on: June 30, 2023, 07:46:09 PM »

I think I figured it out. I was cleaning the needle and seat and noticed 2 or 3 baby threads. I put a new one in and set it. Wouldn't start. I went back to check it and it was sticking up 1/4" past where I set it. I can move the needle and seat up and down in the bowl by hand. Female threads are stripped out! I need a bowl. I contacted Summit, Jeg's, classic car parts places no go. Even Holley won't have any until 8/04/23. They should have 100 available, ridiculous!! 

  Anybody have a front primary bowl for a List 4053 / 4150 Series 780cfm Vacuum Secondary? HELP!!! ... Danny

53

General Discussion / Re: Holley Carb Issues

« on: June 30, 2023, 12:54:50 AM »

Finally got some time. Pulled the carb. Pulled it apart part way. Cleaned it all up and sprayed it down with carb cleaner and blew it out. ALL the holes on both metering plates BOTH sides. Installed new blue gaskets. Set new gaskets with light greasing on intake. Starting hooking things up. Went to put the throttle rod C-Clip on with a screwdriver push and it went flying into the cowl vent. Found a small thin baby magnet and fished it out. Good Times!! Fired it up and had a couple bowl leaks. Tightened them up and a few seconds later... cha cha . cha... cha   chug   chug     chug      chug       chug   and dies. EXACTLY what the hell it did before. It ran approximately 35 to 40 seconds. Gave it a little gas and tried to start it, and it turned over like wildfire, all-the-time trying to start but didn't/wouldn't. I will pull it again and check the needle and seat, as I forgot to do that. After that I am sending it out? NOTE: The throttle rod dripped on the left side, but only while the car wasn't running. Never leaked a drop there before when it used to run great... D

54

General Discussion / Re: 1968 Z/28 Pistons Value

« on: June 18, 2023, 07:46:25 PM »

$350... D

55

General Discussion / Re: 1968 Z/28 Pistons Value

« on: June 17, 2023, 10:15:25 AM »

Well, I took a guess on the price and sold them... Danny

56

General Discussion / Re: Holley Carb Issues

« on: June 13, 2023, 02:26:29 PM »

Ed,
 I didn't realize that thank you. I may pull that phenolic spacer and try the Holley one. If I can get some heat insulation AND better sealing, I am in!

 I pulled a couple plugs, and they were dry as a bone and light brownish. No sign of any fouling. My friend said set the carb on the intake with NO gasket and see if it rocks. I will check the base for flatness. I drilled/installed the backfire valve/ball to help things out if it does backfire. But no backfire issues even while trying to keep it running. It sure seemed like it wanted to backfire bad, but never did. That's why I feel it is a fuel idle circuit issue. And not an ignition issue. I am burned out on it for now. I'll get to it in the coming days. Meanwhile car #1 is still running good with car #2 carb. So I am going to just leave it be.

QUESTION... Should I run the 2 slot or 4 slot power valves?... Does it make a difference?... Also, do we know who make the best quality Valve? D

57

General Discussion / Re: Holley Carb Issues

« on: June 11, 2023, 10:33:08 PM »

Thanx...That bad-boy looks pretty thick. Probably seal up well. Problem is, I already have a 1/4" Phenolic spacer to help prevent fuel in bowls from boiling. I am almost flush with thread height. I think I need one between the 2 that is not too solid. I don't want to install longer studs if I can help it. I better do some more research. Keep the ideas coming. D

58

General Discussion / Re: Holley Carb Issues

« on: June 11, 2023, 05:00:55 PM »

That gasket would seem to be too thin and not as forgiving. It seems rigidish? I think I would be more comfortable with a slightly thicker cushy gray one. I actually think I have that one in my carb box. I'll check it out, thanx... D

59

General Discussion / Re: Holley Carb Issues

« on: June 11, 2023, 02:06:19 AM »

We are getting mixed up. Just to clarify. The carb didn't function properly on car #1 so I took it off. I THEN took a known functioning carb from car #2 and installed it on car #1 and it ran great for 140 miles driving with NO other adjustments. So I KNOW it's the first carb that has the issue. First carb is now sitting on the bench awaiting work.
I will now take it and install it on car #2 that is now without a carb, and try the carb cleaner in the air bleeds. BUT, I will make sure to use a thicker gasket. Anyone have brand/model # of gasket that they like to use. Thanx for all the info so far!! ... D

60

General Discussion / Re: Holley Carb Issues

« on: June 10, 2023, 10:39:46 PM »

Something I forgot to mention. When I pulled the carb, the back quarter of the gasket was dark colored I assume from fuel. When I put it all back together and tried it that second time, then pulled it off for the swap, almost the whole entire gasket but the front right corner was lightly gas wet. Is that possibly the vacuum issue? Would that cause the gas to be PULLED out? Ironically the second time, I overtightened the carburetor bolts a little just to try to seal what I previously saw. That's when it was even worse. Maybe the bottom plate needs a light surface? Then start with a fresh gasket? Any recommendations on good sealing gaskets? D