520 CI Stroker 440 Engine Problems In 1967 Fury

[Green72]

These guys can help you fix it! The knowledge is here!
GET THEM THE BASIC INFORMATION THAT THEY ARE ASKING FOR!
Post #36 is a start

 

[Orig69]

I know this is a B-body forum… and I already posted this on the C-body forum 6 years ago in 2019, but I figured I would also post this here to get all of your help thoughts and opinions on this to hopefully finally get this car running right. My stepdad has a 1967 Fury II 2-door sedan with only 400 miles on it and a 440 stroked to 520 cubic inch big block built by the late Nick Wilson of Comp-U-Flow 25 years ago; it has aluminum heads, an aluminum intake, aluminum radiator, electric fans, an Edelbrock 750cfm carburetor, phenolic carburetor spacer, roller cam, TTI headers with a complete exhaust system, an Advance Auto Parts electric fuel pump, electronic ignition by Rick Erenburg, and a slightly higher 10.5 compression ratio. The engine has given my stepdad nothing but trouble and has not run right since he installed it in the car. It would run like a bat out of hell when its cold and do great burnouts, then it would get hot and want to stall. First it started with honing out the cylinders because they were too tight, then it was the carburetor, then it was the coil, then it was the distributor. Nothing but a pain in the a$$. My stepdad went through 3 coils and 3 carburetors, and he says everything is new. It ran great, then it didn’t, then it ran great when we put it away last November, and now it won’t run right again. My stepdad took it out yesterday when it was 98 degrees and it seems like we are back to square one again where it idles lopey like it wants to stall then it does wicked burnouts then it stalls again. I just don’t understand it. It runs, then it doesn’t, then it runs, then it doesn’t. My stepdad is a good mechanic and can work on a regular 440 no problem, BUT he is new to high performance stroker engines. I have been told it could be vapor lock on the C-body forum, I have been told it could be ignition, I have been told it could be fuel.

Here are pictures of the car, the engine, and the post I made on the C-body forum. My stepdad spent GOOD money on this engine and he is so fed up with it he is planning to rip it out and put another engine in the car, and I would like to possibly help him out because I would hate for him to rip it out if it is something small and stupid after spending all of that money.

Any help or opinions would be appreciated!

Thank You In Advance.

67 Fury 440 Engine Problems

How many gaskets do you have between the carb and the intake manifold?

 

[BSB67]

Put a fuel pressure gauge connection at/near the carb. Run the line out to the driver side wiper blade. Picture attached.

If you have November fuel in it and recently had the issue, it is potentially due to the winter blend, not the ethanol. The Reid Vapor Pressure for winter fuel is like 13, verses summer blend of 7 or 8.

I have proven time and time again that this is a real issue. Especially if it’s an on-again, off-again issue. The heat will cause either vapor lock, or percolation.

 

[padam]

Not the car no, but the engine if we can’t get it right then yes because he is fed up with it.

I tried to pm you but your in box is full.

 

[66ChargerHI-PO]

I tried to pm you but your in box is full.

Cleared it a bit, PMed you