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  #41  
Old 07-27-2014, 11:34 AM
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Thank Aaron. Yes there is a lot to consider for sure. I just looked at 2 all out time slips, 1 @ 300ft and 1 @ 6300ft. I ran 3 MPH faster in the back @ 6300ft Sound like Mike is on to something with fuel. But I do still feel like it is lazy the first 40ft.

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  #42  
Old 07-27-2014, 12:29 PM
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Gary - There are so many variables as you know. If I had to guess, based on the changes I have made with my combos, a 4.30 gear change will help your 60' only slightly but will not be worth the minor change in ET. Your current mph of 151 and et of 8.8 seem well optimized. If it were me I would call Hughes (or your converter company) and run it by them as there may be more in a converter swap than a gear change. I'm always hestitant to turn more RPM's in the lights as its just more wear/tear on everything for small gains.
Tree'd... x2

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  #43  
Old 07-27-2014, 12:36 PM
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Have you made a pass with a vacuum gauge hooked up to see what it reads at full throttle/rpm?

Easy way to check if carb is too small or big.


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  #44  
Old 07-27-2014, 01:22 PM
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Thank Aaron. Yes there is a lot to consider for sure. I just looked at 2 all out time slips, 1 @ 300ft and 1 @ 6300ft. I ran 3 MPH faster in the back @ 6300ft Sound like Mike is on to something with fuel. But I do still feel like it is lazy the first 40ft.
I know with my rig drivers ability to hit the shift point consistently can have a big impact on mph too lol

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Old 07-27-2014, 01:44 PM
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I know with my rig drivers ability to hit the shift point consistently can have a big impact on mph too lol
It is air shifted & 6800.

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  #46  
Old 07-27-2014, 01:47 PM
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Have you made a pass with a vacuum gauge hooked up to see what it reads at full throttle/rpm?

Easy way to check if carb is too small or big.
No vacuum gauge off carb only for vacuum pump.

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  #47  
Old 07-27-2014, 02:08 PM
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Variability of fuel? You mentioned E85... unless you're buying race spec or brewing your own percentage the pump % swing will push you rich/lean just like the DA and altitude variations.

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  #48  
Old 07-27-2014, 02:23 PM
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I buy it from 1 station only here in town, and they blend it them selves. The owner is a very environmental freak and has very sophisticated machinery. Plus I test it my self to make sure.

Thank you all for the opinions & comments I appreciate all of them, keep them coming please. I am only answering them with what I have and am doing. Hope I don't come off wrong.

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  #49  
Old 07-28-2014, 10:17 AM
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Well the first thing I an going to do is lower my carb down 1"

My throttle stop is 2" I am going to take it off and put my 1" super sucker spacer on.

I run a air pan but my carb is only 1 1/2 to 2" away from my hood.

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  #50  
Old 07-28-2014, 11:23 AM
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Did you call John?

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  #51  
Old 07-28-2014, 01:26 PM
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Just got off the phone with him, super nice guy. He says my pump is to small and wants me to get info on the reg. as far as all the lines go I am good. He want to see how your car runs with the new pump and me get the reg info first then we'll see where to go from there. Thanks!

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  #52  
Old 07-28-2014, 01:35 PM
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No problem

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  #53  
Old 07-28-2014, 02:36 PM
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I tried to get info ( Needle & Seat diameter ) and they just told me it big enough..SMH
So I call John back and he is sending me out one of his. He want's to start there. Hope it does what your did Out of curiosity what pump has been on your car?
Oh and after talking to him, we know a lot of the same people. In fact My good friend that did the body & paint on my car live 15 mile from Johns shop & John knows him quite well. Small world!

Last edited by XSIVPWR; 07-28-2014 at 02:54 PM.
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  #54  
Old 07-28-2014, 02:59 PM
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I tried to get info ( Needle & Seat diameter ) and they just told me it big enough..SMH
So I call John back and he is sending me out one of his. He want's to start there. Hope it does what your did Out of curiosity what pump has been on your car?
Oh and after talking to him, we know a lot of the same people. In fact My good friend that did the body & paint on my car live 15 mile from Johns shop & John knows him quite well. Small world!
Let us know what you come up with. I'm running the bigger Product Engineering pump with a Magnafuel 2 port regulator. My hunch is the AFB style carbs on mine are the restriction.

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  #55  
Old 07-28-2014, 04:16 PM
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Let us know what you come up with. I'm running the bigger Product Engineering pump with a Magnafuel 2 port regulator. My hunch is the AFB style carbs on mine are the restriction.
Will do. John is a really cool guy. Find out what the needle & seat size on your Magnafuel reg (if they will tell you..lol) and call him, he'll tell you if it is a restriction or not. The guy is sharp!

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  #56  
Old 07-28-2014, 04:42 PM
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Been running a bg 400 pump

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  #57  
Old 07-28-2014, 04:51 PM
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And regulator? Before Johns.

Last edited by XSIVPWR; 07-28-2014 at 05:00 PM.
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  #58  
Old 07-28-2014, 05:53 PM
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And regulator? Before Johns.
BG 4 port. a $250 regulator....I was convinced it was not fuel system related..... .2 and 5 mph

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  #59  
Old 07-28-2014, 06:12 PM
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BG 4 port. a $250 regulator....I was convinced it was not fuel system related..... .2 and 5 mph
If it works out like this for me, I will be stoked!! Then I will do the pump.

I will also have 2 pumps & a regulator for sale...LOL

Can't wait to hear how you car runs, Good luck!

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  #60  
Old 09-28-2015, 07:51 PM
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How did this turn out?

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