Holley carb question

[mazspeed]

Ok, one of the first times I was in my car and went to stop very fast the car died and my hydroboost lost pressure and just about lost the ability to stop. I was lucky. Now the car is back in the shop with a completely different set up yet this still very much bugs me in the back of my mind. It's a holly carb set up, and would like to be able to run the car as fast as I like and have the ability to stop quickly without it shutting off, making my brakes useless. What can we do to fix this? Will a mechanical pump help with this Jody?

[69bird]

How's your float level.

[mazspeed]

Originally Posted by 69bird

How's your float level.

It was at the stock setting, whatever that was at the time. Now the motor is boosted with a hat, so I don't know if this will hurt it or help it.

[camcojb]

are you using a mechanical or electric fuel pump?

Jody

[mazspeed]

Originally Posted by camcojb

are you using a mechanical or electric fuel pump?

Jody

That's being changed, I think it was a Holley as it was LOUD. With the return line and other fuel stuff with the supercharger, we are putting another one in. From what I understand, fuel slosh in deceleration is causing fuel to jump out and pop back in the carb opening causing it to stall at idle engine speeds. I believe this too be true, but I don't what this happening again. Very scary.

[69bird]

I have a 69 firebird procharged. Only ran it with the carb for a short time. Could never get it to run right. Went to f.i. and never looked back. I know alot of people are running carbs with no problems. Did you send your carb out to be modded? Csu is the best I hear.

[mazspeed]

Originally Posted by 69bird

I have a 69 firebird procharged. Only ran it with the carb for a short time. Could never get it to run right. Went to f.i. and never looked back. I know alot of people are running carbs with no problems. Did you send your carb out to be modded? Csu is the best I hear.

The carb is being lightly modded at Campbell Auto, but nothing over the top or anything. I was thinking of going with a Holley ultra, but the carb tuning is going to be key. As far as the stalling, I'm still worried about it.

[69bird]

What did they do to the carb? If you go to turbomustangs.com you can down load directions to mod it. It's pretty involved. Thats what I did with mine.

[mazspeed]

Originally Posted by 69bird

What did they do to the carb? If you go to turbomustangs.com you can down load directions to mod it. It's pretty involved. Thats what I did with mine.

That's a big site, you have a link?

[69bird]

http://www.hangar18fabrication.com/blowthru.html
Here you go. I would start there so you can be sure your carb is done right to start. That could be your problem. Do you have a a.f. gauge to check on w.o.t pulls?