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  #76 (permalink)  
Old 02-28-2013, 01:26 AM
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Well i guess the experts are now saying you need a different carb or that it might be a problem, I mentioned a simple cam change (along with some others) to "simplify" the WHOLE combo you have, You have spent 6 pages & haven't done anything tuning related, I will say good luck 2 you!!

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  #77 (permalink)  
Old 02-28-2013, 03:21 AM
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Quote:
Originally Posted by LJM97Z View Post
Well i guess the experts are now saying you need a different carb or that it might be a problem, I mentioned a simple cam change (along with some others) to "simplify" the WHOLE combo you have, You have spent 6 pages & haven't done anything tuning related, I will say good luck 2 you!!
The simple cam change your right.Unless there is something different,as for me,stick a fork in it,I'm done.
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  #78 (permalink)  
Old 02-28-2013, 04:59 AM
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Quote:
Originally Posted by painted jester View Post
http://www.hotrodders.com/forum/atta...1&d=1362026797


This is what your running now? with a little research: Summit is base lining their carbs. with (F)77, (R)79 jetting and a 9.5 PV on the primary side. That 9.5 PV is for a very stock engine!

Jester
I switched it to a 4.5 pv b4 I put it on
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  #79 (permalink)  
Old 02-28-2013, 07:43 AM
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The on the left is 780 CFM 3310-1. The one the right is 750 CFM 3310-2 on up.
Basic Holley Carburetor Information
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  #80 (permalink)  
Old 02-28-2013, 11:45 AM
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I'm joining the others who have said adiós. Listening to poor advice might be an expensive lesson- but hopefully you will at least learn something. Good luck.

Last edited by cobalt327; 02-28-2013 at 11:54 AM.
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  #81 (permalink)  
Old 02-28-2013, 12:42 PM
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Originally Posted by 90caprice408 View Post
here are two pics i have in my phone.....car is like 30 miles from me so i don't get to work on her often due to my work schedule
I haven't read the whole thread, but two thoughts based on the pictures:
1. Your lack of pcv can hurt power since the pistons are working against the built up pressure.
2. That is a very aggressive fan to be direct drive. I'd put a clutch on that. Just think how much wind resistance it's causing at just 2000rpm.
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  #82 (permalink)  
Old 02-28-2013, 01:49 PM
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Can you post a video of the car accelerating. So we can hear the exhaust sound. It can give us a clue of what it's doing.
Also i see you have a pressure reulator. It has one inlet and 2 outlets but it looks as if your carb is single feed. Where does the other line go? Is there a pressure gauge? What's it set to?
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  #83 (permalink)  
Old 02-28-2013, 02:06 PM
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The other line is the return line back to the tank....I have the regulator set at 6psi
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  #84 (permalink)  
Old 02-28-2013, 02:12 PM
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Originally Posted by 90caprice408 View Post
The other line is the return line back to the tank....I have the regulator set at 6psi
Cap the return line and see what happens. I dont think it's meant to have a return, especially if you're running a mechanical pump. I have the same style regulator and i plugged the other outlet. You might not be getting enough fuel.
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  #85 (permalink)  
Old 02-28-2013, 02:24 PM
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He's not running the Holley in the pic he posted hes running the summit carb now!! Like the discontinued Holley 4110

http://www.hotrodders.com/forum/atta...1&d=1362086660

Jester
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  #86 (permalink)  
Old 02-28-2013, 03:01 PM
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Originally Posted by bigdog7373 View Post
Cap the return line and see what happens. I dont think it's meant to have a return, especially if you're running a mechanical pump. I have the same style regulator and i plugged the other outlet. You might not be getting enough fuel.
I'm not running a mechanical fuel pump....the car came equipped with tbi so I am using the electric fuel pump that came with the car
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  #87 (permalink)  
Old 02-28-2013, 05:09 PM
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Never thought of that...
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  #88 (permalink)  
Old 02-28-2013, 05:26 PM
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Fuel starvation was my first thought. F-bird is right the tbi pump was made to support like 200hp. You're making way more than that on a bugger engine.
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  #89 (permalink)  
Old 02-28-2013, 05:59 PM
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that could be part of my problem right there.....I just assumed that it would be enough being that i read the factory pump had around 13psi and all a carb needed to run was around 6 psi
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  #90 (permalink)  
Old 02-28-2013, 06:15 PM
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Quote:
Originally Posted by 90caprice408 View Post
that could be part of my problem right there.....I just assumed that it would be enough being that i read the factory pump had around 13psi and all a carb needed to run was around 6 psi
Pressure and volume are two different animals.
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