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Subject: perf-list-digest V2 #150
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perf-list-digest Saturday, June 19 1999 Volume 02 : Number 150



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Ford Truck Enthusiasts - Performance
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In this issue:

FTE Perf - Electronic ignition conversion - '66 300CID
FTE Perf - Gas Milage and Holleys
RE: FTE Perf - Gas Milage and Holleys
Re: FTE Perf - Gas Milage and Holleys
FTE Perf - Re: Holley "bible"

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Date: Fri, 18 Jun 1999 13:14:51 -0400
From: Dan Rushing
Subject: FTE Perf - Electronic ignition conversion - '66 300CID

I plan to convert my '66 F100, 300 CID in-line six engine to a later
electronic ignition system. I have already acquired the distributor,
coil, wiring harness, etc. from an '84 parts truck, only to discover
that it is computer controlled. I understand the earlier version through
'83 uses a different system including a separate ignition box. Does
anyone have any experience or recommendations for either the 72-83
earlier version or the '84 & later version with the computer. Any
performance advantages to either? How difficult is the '66 retrofit
using the computerized ignition system. My preference would be to use
the later version since I already have the component parts except for
the computer. Also, the under-hood appearance is cleaner with less
clutter, without the ignition box.

In case you were wondering, the engine was recently rebuilt with a 294
degree Crane cam, ceramic coated Clifford intake/headers, and a 500 cfm
Carter AFB-4V. The engine compartment has been cleaned up, repainted and
detailed close to show conditon. The stepside exterior is totally
original, a little tired - so it makes for a good sleeper. It runs great
already, but I'm hoping the ignition conversion will give it a little
extra uumph and dependability. I realize most of you guys routinely
trash the old six shooter in favor of a big block V8, but I have been
pleasantly surprised at the performance of this old "stump puller", an
affectionate term used by Carolina dirt track racers in the sixties. The
best part is the look of surprise when the hood is raised.

I would like to hear from anyone interested in in-line sixes with
information to share or questions.

Henry Mac
Charlotte NC
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Date: Fri, 18 Jun 1999 12:26:52 -0700 (PDT)
From: Bill
Subject: FTE Perf - Gas Milage and Holleys

I have seen all the posts concerning Holley (vrs. the world) carbs...
and have a question...

I have a 3 year old Holly 4160 (80457) 600CFM, electric choke, stock
jets, 31 squirter, standard secondary spring, sittin on a 1970 351W
(Performer 351W manifold, mild RV cam), duel exhaust (69 Mach I cast
iron manifolds, 2.25" exhaust all the way to the back).. this is all
running thru a 1976 C4 into 3.25 rear gears... this is all in a '64
F100 shortbox. Tire size in the rear, P235/75 15" (basically a daily
driver)...

Set the idle mixture using a vacuum gage, get 18.5lbs at idle (albeit
with a very slight fluctuation in idle +-50rpm)..

Engine has about 65K on it, doesn't burn any oil, double roller timing
chain with no noticable slack..

What is this leading to you ask... Gas milage sucks.. 8.5MPG if I even
think about getting in the secondaries, 9.8 babying it.. is this what I
can expect... if so, that is ok, the truck is a blast to drive, if not,
any ideas on what I can do (other than changing rear gear ratios) to
improve the milage??

Thanks,

Bill in Texas
'64 F100 Shortbox (351W/C4)


_________________________________________________________
Do You Yahoo!?

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Date: Fri, 18 Jun 1999 15:10:52 -0500
From: "Baldwin, Dave (CPCP Design)"
Subject: RE: FTE Perf - Gas Milage and Holleys

Bill,

I've never had a 351W, but I had this carb on a larger engine and got over
20MPG--but it wasn't a truck (weighed as much as one though). Rear end
ratio was lower (numerically), so that may have been a factor, but I don't
think it would've made the difference between 20 and 8.5 MPG.

If it's running right, this is puzzling. How is your milage being measured?
Could it be that you're driving different rear gears than the C4 was
originally driving, so your odometer is reporting fewer miles driven than
you are actually driving? It seems that you should be getting twice the
milage that you are. You could get an EGO sensor and see if you are running
way rich--or find a shop that could test it for you.

Dave Baldwin
Dallas, TX

> -----Original Message-----
> From: Bill [mailto:gypsybilll yahoo.com]
>
> I have a 3 year old Holly 4160 (80457) 600CFM, electric choke, stock
> jets, 31 squirter, standard secondary spring, sittin on a 1970 351W
> (Performer 351W manifold, mild RV cam), duel exhaust (69 Mach I cast
> iron manifolds, 2.25" exhaust all the way to the back).. this is all
> running thru a 1976 C4 into 3.25 rear gears... this is all in a '64
> F100 shortbox. Tire size in the rear, P235/75 15" (basically a daily
> driver)...
>
> Set the idle mixture using a vacuum gage, get 18.5lbs at idle (albeit
> with a very slight fluctuation in idle +-50rpm)..
>
> What is this leading to you ask... Gas milage sucks.. 8.5MPG
> if I even
> think about getting in the secondaries, 9.8 babying it.. is
> this what I
> can expect... if so, that is ok, the truck is a blast to
> drive, if not,
> any ideas on what I can do (other than changing rear gear ratios) to
> improve the milage??
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Date: Fri, 18 Jun 1999 15:53:30 -0700
From: "Danger"
Subject: Re: FTE Perf - Gas Milage and Holleys

Bill in Texas wrote...

> I have a 3 year old Holly 4160 (80457) 600CFM, electric choke, stock
> jets, 31 squirter, standard secondary spring, sittin on a 1970 351W
> (Performer 351W manifold, mild RV cam), duel exhaust (69 Mach I cast
> iron manifolds, 2.25" exhaust all the way to the back).. this is all
> running thru a 1976 C4 into 3.25 rear gears... this is all in a '64
> F100 shortbox. Tire size in the rear, P235/75 15" (basically a daily
> driver)...
>
> Set the idle mixture using a vacuum gage, get 18.5lbs at idle (albeit
> with a very slight fluctuation in idle +-50rpm)..
>
> Engine has about 65K on it, doesn't burn any oil, double roller timing
> chain with no noticable slack..
>
> What is this leading to you ask... Gas milage sucks.. 8.5MPG if I even
> think about getting in the secondaries, 9.8 babying it.. is this what I
> can expect... if so, that is ok, the truck is a blast to drive, if not,
> any ideas on what I can do (other than changing rear gear ratios) to
> improve the milage??
>
> Thanks,
.......

I'd guess you're running a rich mixture if that's a stock carb on a 351,
and if you're not right at sea level then altitude adjustments might also be
neccesary

FYI: I just bought the same carb and when I removed the primary float bowl
to change the PV and main jets, I found a deffective main jet!


Danger



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Date: Fri, 18 Jun 1999 21:52:55 -0700
From: "Steven Salas"
Subject: FTE Perf - Re: Holley "bible"

Danger asked : Does your "bible" have an ISBN #? No it doesn't .
This book is what most parts counter people would have in their "catalogue
rack" for them to be able to order indivdual parts for Holley carbs. It does
however have a Holley part #. So theoretically you could order one from a
Holley dealer. Part #36-51-7 Illustrated parts and Specs. My book is about
ten years old now so the suffix on the part # may have changed. Best
Regards, Steve Salas



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