Re: Darg Racing - Not pulling at top of gear

[mike creglow <mcreglow@xxxxxxxxx>]

hi don,
from your description, it sounds like a fuel problem.  some questions:
- on the dyno, was your motor still making power at 6300 rpm?  or was
the HP dropping off precipitously?  did you have the electric fuel
pump on during the dyno?
- where did you put your electric fuel pump?  should be as close to
the tank as possible as it is easier to push fuel then pull fuel.
- did you remove your mech fuel pump?  if removed, what regulator are you using?
- does your e-fuel pump require a return flow back to the tank?
- do you have enough amps to run the e-fuel pump?

a fuel pressure gauge is critical to understand where you stand.

mike



On Sun, Jun 3, 2012 at 7:32 AM, Donald Gallimore <dongallimore@xxxxxxx> wrote:
> During my last two trips to the drag strip with my 440 powered '65 Belvedere,
> I'm getting no acceleration at the top of each gear.  It's around 5500 RPM.
> This is an engine that has gone over 6300 RPM on the chassis dyno a few years
> ago and I have been shifting at 5700-5800 in the past.  Just seems to stop
> accelerating kinda like you put your hand over the carb.  Seems a little worse
> at the end of first gear. I installed a Carter electric fuel pump between trips.
> I do not have a fuel pressure gauge.
>
>
> Someone suggested I needed a larger carb.  It's a 850 CFM AED 4150 carb which
> would seem large enough.  I did check the clearance between the hood and the
> carb top and it's 2" which would seem adequate, too.
>
> The car is running 12.35 at 108mph at 3800#.
>
> Any suggestions on where to look for a cause and solution to this issue?
>
> Akron Don Gallimore

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