perf-list-digest Friday, June 26 1998 Volume 01 : Number 007



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Ford Truck Enthusiasts - Performance
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In this issue:

FTE Perf - New member intro
RE: FTE Perf - got more parts
RE: FTE Perf - 460 roller cam was: FE cam
RE: FTE Perf - Distributors
Re: FTE Perf - Rod and Piston weights
FTE Perf - Balancing Rods
FTE Perf - balancing
Re: FTE Perf - New member intro
FTE Perf - FE Cam
Re: FTE Perf - FE Cam

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Date: Thu, 25 Jun 1998 12:41:38 -0700
From: "Darryl A. Regan"
Subject: FTE Perf - New member intro

Hello all. I just joined the list a couple of minutes ago. Thanks George for
turning me onto this list and Kieth for the instructions!! Anyway I own a 78
Bronco with a decently built 460. 86 motor, stock heads, edelbrock performer
intake, edelbrock 750 carb with electric choke, DUI ignition system and a
somewhat mild cam. Future plans are a set of 1968 heads waiting to be
rebuilt. Have the cleveland size valves (Milodon) and a set of harland Sharp
roller rockers sitting at home. That's enough for now. Look forward to hearing
from everyone.


dar6 jps.net
78 Bronco Ranger XLT (460 powered)
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Date: Thu, 25 Jun 1998 16:23:51 -0400
From: Sleddog
Subject: RE: FTE Perf - got more parts

blue thunder cast iron heads with the CJ ports, not the BB chevy ports.

they are ported and flow enough that the previous owner ran over 9000 rpm
with 500+ cubes. the intake is also ported and flowed on the bench to flow
within 2% of each runner (hard to do with long/short runners like the p-o-s
has.

sleddog

ps-where are you located? in PA/NJ area?

- ----------
From: maga55[SMTP:maga55 ix.netcom.com]
Sent: Thursday, June 25, 1998 2:24 PM
To: perf-list ford-trucks.com
Subject: Re: FTE Perf - got more parts

Good lookin rigs. What iron heads?

- -----Original Message-----
From: Sleddog
To: 'perf-list ford-trucks.com'
Date: Thursday, June 25, 1998 9:53 AM
Subject: RE: FTE Perf - got more parts


>460 for truck pulling- check out my homepage:
>http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.geocities.com/MotorCity/Downs/7273/
>for more info. there is info regarding my previous truck and my new
buildup.
>
>sleddog
>
>----------
>From: maga55[SMTP:maga55 ix.netcom.com]
>Sent: Thursday, June 25, 1998 10:12 AM
>To: perf-list ford-trucks.com
>Subject: Re: FTE Perf - got more parts
>
>What engine are these goodies going to enhance?
>
>
>
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>

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Date: Thu, 25 Jun 1998 16:25:40 -0400
From: Sleddog
Subject: RE: FTE Perf - 460 roller cam was: FE cam

264/272 at 0.050

sleddog

- ----------
From: maga55[SMTP:maga55 ix.netcom.com]
Sent: Thursday, June 25, 1998 2:40 PM
To: perf-list ford-trucks.com
Subject: Re: FTE Perf - 460 roller cam was: FE cam

What duration are we talking at those stratospheric lifts?

>
>the cam i have, ultradyne (perhaps the best cam company) told me it is a
>mild street cam. that is with almost .700 lift!



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Date: Thu, 25 Jun 1998 16:26:28 -0400
From: Sleddog
Subject: RE: FTE Perf - Distributors

no, the mallory uses a light, and the msd is magnetic. i personally don't like mallory's design.

sleddog

- ----------
From: maga55[SMTP:maga55 ix.netcom.com]
Sent: Thursday, June 25, 1998 2:25 PM
To: perf-list ford-trucks.com
Subject: Re: FTE Perf - Distributors

Is that pickup anything like the Mallory Unilite?

- -----Original Message-----
From: Sleddog
To: 'perf-list ford-trucks.com'
Date: Thursday, June 25, 1998 9:52 AM
Subject: RE: FTE Perf - Distributors


>ford duraspark will work into that range. the msd billet destributer i use
>on my 460 for pulling has no vac advance, and i locked out the mech. adv.
>to use a timing computer. i really like this one, but the pickup inside
>did fail once. msd replaced for free.
>
>the msd is expensive, and the ford is not, why not just run the ford one
>with the big cap?
>
>sleddog
>
>----------
>From: Jim Craig[SMTP:jcraig nations.net]
>Sent: Thursday, June 25, 1998 12:41 AM
>To: perf-list ford-trucks.com
>Subject: FTE Perf - Distributors
>
>Hey I would like to upgrade my electronic dist. I am currently running it
>with a Jacobs ignition (which is Great!) Any suggestions? I am wondering
>what the little grey ignition box is for. When I rewired my truck, I hated
>tying into that box! Accel advertises one of their distributors with no
>external control box. Hey y'all, what you think of this?!
>
>I am looking for an accurate one to at least 6000RPM. I have only owned
>ones with vacuum advances, any preferences?
>
>
> Jimbo
> '77 Supercab 460
>
>
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>
>
>
>
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>

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Date: Thu, 25 Jun 1998 18:11:39 -0400
From: Barry
Subject: Re: FTE Perf - Rod and Piston weights

Keith Srb wrote:
>
> Somewhere, I heard or read that you should try and match up the rods to the
> pistons by weight. If I remember right, the purpose of this was to try and
> maintain about the same weight, of rod and piston together, between each
> cylinder. Is there any truth to that?
>
> Thanks
>
Not exactly. If I remember correctly, what you want to do is match the
rods and pistons so that they are all within a few grams or ounces of
each other. The purpose for this is to cut down or eliminate vibration.
This is part of the blue printing and balances process for racing
engines. The example I like to give is, it is the same principle as
evening out a load in a washing machine, you get two much weight on one
side and it makes a terrible noise. Same principle for an engine. Or at
least thats what my wife kept telling me.
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Date: Thu, 25 Jun 1998 17:52:36 -0500
From: "wild.bunch"
Subject: FTE Perf - Balancing Rods

We know this and are just using a short cut term, but balancing rods
involves balancing all of the big ends and then balancing all of the small
ends. The total rod weights match also after this process, but that is an
incidental result of matching all 8 big ends and matching all 8 small ends.
When the parts are hauled down to the balancer, they view the big end as
rotating weight and the small end as reciprocating weight. Reciprocating
weight includes pistons, rings, and pins also. When the balance shop puts
the bob weights on the journals, the value of the weights equals two rod big
ends and one reciprocating weight assembly. This is because most
reciprocating engines balance only 50% of the reciprocating weight. Some
high RPM engines may find a 52% balance better, but no piston engine can be
in theoretically perfect balance (unless it is opposed and the pistons are
not offset with respect to each other) so the 50% figure is a compromise.

wild.bunch

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Date: Thu, 25 Jun 1998 22:55:51 -0400
From: Sleddog
Subject: FTE Perf - balancing

found an interesting article on balancing. it is about VW engines, but applys to all engines in some ways.

http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.type2.com/sermons/liturgy/free_horsepower.html

sleddog

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Date: Thu, 25 Jun 1998 20:15:20 -0700 (PDT)
From: Steve & Rockette
Subject: Re: FTE Perf - New member intro

At 12:41 PM 25/6/98 -0700, you wrote:
>Hello all. I just joined the list a couple of minutes ago. Thanks George for
>turning me onto this list and Kieth for the instructions!! Anyway I own a 78
>Bronco with a decently built 460. 86 motor, stock heads, edelbrock performer
>intake, edelbrock 750 carb with electric choke, DUI ignition system and a
>somewhat mild cam.


I hate to tell you this, the 86 heads are a better choice for a big time
port and polish job than the earlier heads. Check the archives for the
article I wrote to sleddog, about a year ago, or I can try to find the
original story in Super Ford mag, but that might take a while....

Steve & Rockette...Lifes a beach
'63 F100 Longbox
'94 Taurus SHO - SWMBO's new car!!
and since most are listing all thier cars:
'72 Capri - Rockette's Toy, aka - SWMBO
'73 Capri - My Toy / Daily Driver
'73 MGB-GT Our Toy
'70 Torino GT My "New" Car


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Date: Thu, 25 Jun 1998 22:06:47 -0600
From: dcbeatty
Subject: FTE Perf - FE Cam

I called the guy at Competition Cams. He recommended the following for a 390 4v in a truck with 3.54:1 gears:

Lift valve: .494 intake, .494 exhaust

Duration of 218 degrees at 50 (fifty what I don't know).

110 degree lobe separation, 48 deg. overlap.

What would 2 steps over this be?

Thanks for the help again. Sorry I'm not more knowledgeable on camshafts, but I'm willing to learn.

Drew
dcbeatty rmi.net

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Date: Thu, 25 Jun 1998 23:07:32 -0700
From: "Dave & Debby Anderson"
Subject: Re: FTE Perf - FE Cam

>Lift valve: .494 intake, .494 exhaust
>
>Duration of 218 degrees at 50 (fifty what I don't know).
>
>110 degree lobe separation, 48 deg. overlap.



They've recommended a 268H from their High Energy series. I tend to think
of these as RV grinds but I don't know if Competition Cams would call them
that or not. I don't have a full catalog but it looks like the 270 and 280
Magnum would be one and two steps up.

Generally cam manufacturers will list two duration figures for a cam. One
is so-called "advertised" duration and the other is a measurement of
duration between opening and closing taken at .050 of lift at the lobe.
It's an attempt of sorts to provide some measure of comparability between
cams. Here's what I could find about specs for the two cams:

270 Magnum
adv. duration 270
duration .050 224
lift at valve 0.519
lobe separation 110
deg of overlap 50

280 Magnum:
adv. duration 280
duration .050 230
lift at valve 0.530
lobe separation 110
deg of overlap 60

It's already been said that manufacturers have an annoying tendency to
recommend small cams; me and the way-too-small cam in my 460 play motor can
vouch for that. In this case though I think they may have come pretty
close to what you need. A friend of mine had the 280 magnum in a 460
powered '78 F150 4x4 and although the truck ran fine once underway he said
it was a little soggy right off idle. His motor sounds similar to yours:
9.75:1 cr, Performer intake, small Holley, cast iron exhaust manifolds and
duals and a stock torque converter. Others may disagree but if you don't....


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