Car stalling question

[wedgerton]

Originally Posted by wedgerton

Hello,

I have a 347 Stroker Engine with street/race cam and a Holley 4 barrel 650. I have a problem which I don't know what's causing it. Under normal driving I have no problems, but if I do a very strong stop, hard braking, the engine dies. It sounds as though it's loading up. Here's the engine I have from Proformance Unlimited. 347 Sroker, 331 Crate Engines, Ford Stroker Engines, Ford Performance Engine
Anyone else experienced this problem?

Wayne Edgerton
Flower Mound, TX

Ok I'm back, finally, and the problem has been fixed. I have been working with AED Performance who put together my carburetor for the guys who built my engine. AED Performance Racing Carburetors, Holley Carburetors, and Performance Holley Carburetor Parts These are some really nice folks who went out of their way to help me solve the problem and didn't charge me. I can’t say enough good things about them. But we went through several iterations to get there.

As I posted previously the first thing they had me do was put on rear jet extenders, which didn't solve the problem. They then decide to work with their engineers and fabricated me some parts to slide over the rear jets. Below is a link to the parts and what they looked like. They sent me a new smaller float so that their new part would work and two items to slide over the jets.

https://picasaweb.google.com/1166402...2G-bqros6C1gE#

I put them on and gave it a try and it still didn't work. They had me remove the carburetor and sent it to them. They said they found the spring was too tight on the new float, not my doing, and they made it not so tight. They then sent the carb back to me and I reinstalled it. It worked, but still was threatening to stall. They had me adjust the rear mixtures 1/4 turn leaner and had me lower the float 1/2 turn. They also had me raise the RPM up from 750 to 900.

That seemed to fix the problem. There's still a slight tendency to sound like it's going to stall out on a hard break but it quickly picks it back up. I can't get it to stall now. I'm not sure which one of those was the real hero but I guess it's working now so what the hey

Wayne Edgerton