Carb question/Hot start Problem
Thread Starter
Racer
Joined: Sep 2008
Posts: 434
Likes: 1
From: Charlotte NC
Carb question/Hot start Problem
I have a Edelbrock 1411 750 cfm carb on my car.
the car have high compression pistons and a mild comp roller cam.
Question is: How can I tell if the carb is to much for the car?
I'm having hot start problems where it will flood very easily when the car is hot.
Thanks in advance!
the car have high compression pistons and a mild comp roller cam.
Question is: How can I tell if the carb is to much for the car?
I'm having hot start problems where it will flood very easily when the car is hot.
Thanks in advance!
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
I have a Edelbrock 1411 750 cfm carb on my car.
the car have high compression pistons and a mild comp roller cam.
Question is: How can I tell if the carb is to much for the car?
I'm having hot start problems where it will flood very easily when the car is hot.
Thanks in advance!
the car have high compression pistons and a mild comp roller cam.
Question is: How can I tell if the carb is to much for the car?
I'm having hot start problems where it will flood very easily when the car is hot.
Thanks in advance!
Pro
Joined: Mar 2008
Posts: 716
Likes: 1
From: Albuquerque New Mexico
My experience with the Edelbrock carbs is that since the fuel is stored at the base of the carb it gets hotter and more commonly results in hot-start issues vs. a holley which has the float bowls hanging off to the side with more air cooling going on. I've noticed this and also that with the Edelbrock carbs they will require more pedal pumping after they sit overnight to start. Never had this problem with Holley. Not saying that edelbrock carbs are inferior just a few things I've noticed while I've run both brands and various sizes over the years. You can improve the fuel heating issue by installing a phenolic spacer (assuming you have enough hood clearnance) to provide insulation between carb base and manifold - $20. I agree that your engine would run much better with the 600-650cfm Edelbrock. I had what sounds more HP 350 build than you're describing several years ago and found it ran significantly better with the 600cfm than the 750 and also better mpg so the 750 really makes no sense for a medium-build 350.
Intermediate
Joined: Apr 2008
Posts: 36
Likes: 0
From: Glendale AZ
I live in Phoenix and during the summer the gas in my '68 327 w/ Q-jet will 'percolate' and dribble into the carb when it's hot outside and I've been driving the car hard, then shut it off. I don't know if this happens with Edelbrock carbs, but I thought I'd mention it because from what I understand it is not uncommon these days with the belnded fuels that are out there for reduced emissions.
Pro
Joined: Jan 2005
Posts: 535
Likes: 0
From: Southaven MS
I have the exact same carb on a small block 385, and was having the same issue in the summer. I have very limited hood clearance so I bought an edelbrock insulating spacer and a shorter air filter. This pretty much resolved the issue.
Just an FYI:
Just an FYI:
Drifting
Joined: Nov 2002
Posts: 1,687
Likes: 200
From: Loveland, CO
I agree with SH-60B. I had a tremendous load up problem after trying a hot start on my '73 BB with 4781 carb and the replacement 770 Street Avenger that replaced it. Someone on the Forum suggested not touching the gas pedal upon restart. That solved my problem.
Ralph.
Ralph.
