fordtrucks80up-digest Friday, February 6 1998 Volume 02 : Number 050

Ford Truck Enthusiasts - 1980 And Newer Trucks Digest
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In this issue:

FW: speedo gear...revisited [Sean Winters ]
RE: Which MSD ["Smeins, Larry" ]
Re: Radio ["Casey Vandor" ]
Re: Forever to fill ["Casey Vandor" ]
MSD mileage increase []
MSD ["Jram" ]
Re: be thankful it's only $30.00 []
bronco II, modifications ["Brian J. Paisley" ]
Re: Radio []
RE: speedo gear and fuel tank ["Beaman, James" ]
Re: Lifts []
horsepower [Jake ]
HP [Jake ]
Brain burp...dualies []
Re: Super 21 Snake Oil/im240 []
re: popping noise ["Randy Kindler" ]



Date: Thu, 5 Feb 1998 16:34:28 -0600
From: Sean Winters
Subject: FW: speedo gear...revisited

> Speaking of speedometers...
> I replaced the 3sp column shift tranny in my 82 with a 4OD floor
> shift. The speedometer worked fine before the swap. The new one had a
> different cable end on the transmission side. No big deal. Went to
> Ford, bought a new one along with a new gear. Put everything back in
> paying careful attention to the path of the old cable (no extreme
> bends, etc.). Now the speedo flutters wildly, going between 5-35 mph
> no matter what the actual speed is and sometimes does not work at all.
> When it does not work, you can stomp the accelerator and it will
> sometimes bump up to around 25 mph and then fall back down.
> Steps I have taken:
> 1. Pulled the cable back out and oiled it.
> 2. Bought another speedo gear (the one I bought at first was not
> correct for my axle ratio.
> 3. Double-checked the connections at both the speedo and the
> transmission.
> None of these things effected any change.
> I can have my son sit in the drivers seat while I disconnect the cable
> from the trans and spin it with my hand and it is registering.
> Any ideas???
> Thanks!
> Sean Winters
> >
> > Walt,
> >
> > Where and how do you fix the speedo. I've heard there some =
> > sort of little gear in the end of the speedo cable?
> >
> > John Cassis
> > The Danger Ranger
> John,
> On my 85 F-150 4x4 I just crawled under the truck, looked at the end
> of
> the speedo cable where it goes into the tranny, removed the one screw,
> pulled out the cable, the plastic gear followed(no clip or anything,
> it
> just comes right out), popped in a new one, plugged the cable back in,
> put the screw in and it was done. Took me less than a minute.
> I picked up my new gear ahead of time, I went from the stock P235-15's
> to 31x10.50 and I had to go with a gear that had one less tooth. They
> actually come in different colors but the number of teeth are what is
> important. I calculated the percentage difference in rolling
> distance
> with the new tires and determined I needed to drop 5 % for the speedo
> and odo to be accurate. I went to Ford, they told me my stock green
> gear
> had 20 teeth and gave me a pink gear with 19 teeth. They had it in
> stock, say they get calls for them all the time. Cost me less than $6
> bucks with tax. It now records like a charm. It was the easiest thing
> I
> ever replaced on the truck.
> I would imagine that your Ranger would be very, very similar.
> Hope this helps.
> Walt
> +-------------- Ford Truck Enthusiasts - 1980 and Newer
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Date: Thu, 5 Feb 1998 15:49:01 -0700
From: "Smeins, Larry"
Subject: RE: Which MSD

Have you hit the limiter yet? I'm curious how it works. I invented a
limiter back in the 70s that dropped every other cylinder and worked
very smoothly. When you hit limit the engine just wouldn't go any
faster instead of shutting down like most limiters I've seen. I
incorporated this limiter idea in an ignition I did for Indy cars but we
never got it into a race. The engine man didn't like new electronics
and the driver blew the engine by overrevving when he blew a
transmission during time trials. I published the idea and wonder if MSD
picked up on it. Maybe I should have gotten a patent.


>Date: Thu, 05 Feb 1998 08:44:56 -0600
>From: Gary Spradley
>Subject: re: which msd?


>I'm just curious Gary, unless yer drag racin, what good
>is the rev limiter gonna do you? (hopin you don't come
>up with a good reason, cuz I already got the 6a :)

>Should I have consulted with you first? hehe

>I bought the 6AL because on occasion I run my Windsor pretty hard.
>Wouldn't you if your Windsor put out 385 hp and 413lbs or torque
>It's a nice ride with 4.10's and limited slip on both ends.
>Although a 4X4 should never be used as a drag truck, I am entitled to a
>little fun every once in awhile.

>To me, $40.00 was worth a piece of mind.

>Gary Spradley 84 F150 4X4 359 Windsor


Date: Thu, 5 Feb 1998 15:14:11 -0900
From: "Casey Vandor"
Subject: Re: Radio

Well I unhooked the alternator and ran the radio with the truck on and it
is crystal clear. Problem is I can't find what I need to put in the system
to block it out. Any suggestion on how to eliminate noise from the

>>>>>Date: Wed, 04 Feb 1998 18:25:26 -0600
From: "David J. Baldwin"
Subject: Re: be thankful it's only $30.00

Casey Vandor wrote:

> You should be happy if two tanks is only 30.00! It costs me on average
> 55-60! I see your point about the extra money though.
> Casey

Ugh! Glad I don't live where you do.

How are you coming with that radio? You have any luck with the buzzing?


Date: Thu, 5 Feb 1998 15:19:34 -0900
From: "Casey Vandor"
Subject: Re: Forever to fill

I don't know if this is the same on a truck, full size bronco, but my
friends BII had the inlet line inside of the breather tube. We simply
pryed open those two little vents furhter than they already were. After
that, enough air was able to get out quick enough so the pump wouldn't shut

>>>>I hate it when that happens!!!
I have the same problem on my '87 F-250 and I go thru it TWICE w/each
fill. I have not noticed a pattern, but sometimes it works just fine,
and others not at all. I though that maybe there was too much fume
build up in the tank, but I don't notice any rushing air while
removing the cap. It must be these Cleveland/NE Ohio stations, I
swear. Of course it happens when I'm in the biggest hurry. I've
tried it w/the nozzle shoved all the way down into the stinkin' tank
itself and even just far enough in to hold the flap open so gas
doesn't spray on me. Nothing seems to work. Here I though I was the
only one suffering....let's start a support group....
Let me know what you come up with,


Date: Thu, 5 Feb 1998 19:40:02 EST
Subject: MSD mileage increase

ran out of steam about 3000-3500 rpm. with the MSD it is
engine when you reach the higher revs.

added a K&N filter, just the panel filter. And removed the
cat back. >>

Did you really get a 3-4 MPG improvement with just those changes?? I
would gladly spend the money for an MSD & a K&N if I got even a 2 MPG
Thanks! Bob


Date: Thu, 5 Feb 1998 18:43:47 -0600
From: "Jram"
Subject: MSD

Someone asked for a good reason to have a rev limiter on a 4x4 and I have a
great one. Mud and hills. When off roading my friends sometimes zing their
engines pretty good. Floating valves and one guy even cracked a piston just
to get to the top. I dont use MSD but I have a Unilite ignition system and
I am sure that the revlimiter has saved me a bundle in engine repairs while
off roading in the mud.
'81 F-150 4x4
94 F-150
88 Lincoln MKVII


Date: Thu, 5 Feb 1998 18:10:11 EST
Subject: Re: be thankful it's only $30.00

Hey Casey
I think you are missing the cost/treatment? 1mL treats 1 gal. A quart treats
1000 gal. so you need to do the math figuring an increase in fuel economy of
say 20%. That's 200 gal. saved by using a quart of SUPER 21. If the cost of
fuel is averaged out across the country, you'd find it is about $1.40 gal.
200 times 1.40 is $280. If the retail price of the quart is SUPER 21 is $160,
that is about $120 isn't it? Nearly twice the cost!

So, the tailwind doesn't need to be quite 200 mph!

Besides, a 200 mph tailwind will put you past all the rest stops!!

Kind Regards,


Date: Thu, 05 Feb 1998 18:30:26 -0500
From: "Brian J. Paisley"
Subject: bronco II, modifications

i am new to this ford digest, and i have a question. I am doing a lot of
things to my 84 Bronco II with the small v6. it's not fuel injected, and i
have upgraded it with an offy dual port intake, and a holley 390cfm carb.,
i also unhooked the computer (no emmissions here) and put on a dual point
mallory distributor and mallory promaster coil. i have heard a lot about
cat back exhaust, but i really don't understand what it is. i am going to
get it custom fitted for dual exhaust, but if cat back is good and
relatively inexpensive, that could be an option. But i want it to sound
tough. man it's hard to find performance parts for the 2.8 v6, i got all
these parts at racer walsh, maybe you've heard of it. any helpful comments
or anyone who has done what i'm doing and could steer me in a particular
direction would be greatly appreciated.


Date: Thu, 5 Feb 1998 20:19:38 EST
Subject: Re: Radio

sorry i didnt get in this conversation from the start, but is this a stock
radio? if its not then the easiest solution to get rid of altenator whine is
to move your ground wire.....


Date: Thu, 05 Feb 1998 14:43:45 -0600
From: "Beaman, James"
Subject: RE: speedo gear and fuel tank

Mike Johnson wrote:

> On my 86 f-150 I also went from the stock P235-15's to 31x10.5
> about 30,000 miles ago. I never changed the speedo gear.
> Does going to a larger tire size make my odometer and speedometer
> read higher or lower? By what percent is my milage off? Do I actualy
> have more or less miles than the 185,000 my odometer reads?
Doing the math, the difference in circumference seems to be about 6%.
So John's comment about registering 55 for an actual speed of 58 is
about right. Your gasoline mileage will seem to be less but actually
might be better depending on what the lower numerical "gear ratio" puts
you on your torque curve. If your odometer reads 185,000 and you
changed tires 30,000 miles ago on your now slightly inaccurate odometer,
your actual mileage will be about 183,200 miles. Remember also that for
the same throttle setting, your acceleration will be 6% slower and for
the same brake pedal pressure, stopping distance will be 6% further.
All other things remaining equal, of course.

James Beaman
Houston, Texas


Date: Thu, 5 Feb 1998 22:00:48 EST
Subject: Re: Lifts

I bought these coil spring expanders for my Ranger and they don't work too bad
but I don't know if that's good to put that kinda stress on the stock springs.
Any of you think I should just buy a 2 inch lift with new springs? I would
much rather just leave these in because it sure is less expensive and I don't
have all the money in the world.



Date: Thu, 05 Feb 1998 22:26:49 +0000
From: Jake
Subject: horsepower

I have a 1987 351w and would like to get a few more horses out of it. I
have headers but they are pretty trashed. I have a high rev carb $
barrel. and a mild cam. I don't know what kind of horses I am getting
now but I could use a little more to turn my mud Tires on the trails
around me. Any info on some quick horsepower would be greatly




Date: Thu, 05 Feb 1998 22:56:03 +0000
From: Jake
Subject: HP

I have been looking for the horsepower ratings for a stock 1987 HO
351W. If anyone knows were I can find these or could tell me what it is
I would be grateful.


Jake Everly


Date: Fri, 6 Feb 1998 01:25:38 EST
Subject: Brain burp...dualies

Sorry, but every now and then I get these brain burps...awhile ago when you
guys were talking about towing I thought someone mentioned dualies bring down
the towing cpacity. Is this true, and if so why?



Date: Fri, 6 Feb 1998 01:32:08 EST
Subject: Re: Super 21 Snake Oil/im240

In a message dated 98-02-05 16:53:17 EST, you write:

Baseline 0.0868 2.1109 371.9243 0.1712
With Super 21 0.0524 1.4753 372.4785 0.0901
% change -40% - 30% - -48%

C. 1995 Ford Taurus
Baseline 0.0220 0.2118 388.8413 0.0223
With Super 21 0.0005 0.3229 388.6041 0.0012
% change -98% +35% - -95%

Why the increase in carbon gases for those two? (monoxide for Taurus, dioxide
for Escort)


Date: Thu, 5 Feb 1998 22:20:43 -0700
From: "Randy Kindler"
Subject: re: popping noise

Hi, John.
Do you have auto hubs. I've occasionally had the same thing happen on my '95
F150. Usually, it happens when making a tight turn. One of the hubs will
lock, and I get a popping noise. It usually only locks for a couple minutes.
Once, I had to stop and back up to get it to unlock. Its only happened 3 or
4 times in three years, and doesn't seem to have damaged anything.... yet.


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