perf-list-digest Tuesday, January 5 1999 Volume 01 : Number 193



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Ford Truck Enthusiasts - Performance
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In this issue:

FTE Perf - A question concerning heads...
FTE Perf - Re: 96 F150 Horsepower Figures
Re: FTE Perf - Re: 96 F150 Horsepower Figures
FTE Perf - Pushrods 429/460
RE: FTE Perf - Pushrods 429/460
FTE Perf - ADMIN: TruckTough.com
FTE Perf - Inline six NEED HELP!!!!!!

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Date: Mon, 04 Jan 1999 06:59:49 -0500
From: The Neighbors
Subject: FTE Perf - A question concerning heads...

I have followed with some interest a thread on this list concerning
getting more power out of a 460, which seemed for a while at least to
concentrate on the heads. Now I have my own question, but not for a 460.
I have a couple of sets of heads off a 239 Y-block and a 256 Y-block,
both truck versions of those engines. While both heads are similar,
there are differences. The 239 heads have the smaller combustion
chambers (I think. I haven't cc'd these heads), but also have small
valves and ports. The 256 has larger valves, ports and combustion
chambers. I need an opinion on which of those heads will give me a bit
more performance over the already very modest performance I currently
have. My big concern is that the 256 heads will lower my compression
ratio.
- --
Don Neighbors
'54 F250 Named Grover

"Any dropped tool or part will automatically fall into the most
innaccesible part of the vehicle."

grover ford-trucks.com
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Date: Mon, 4 Jan 1999 07:19:19 EST
From: FLR150 AOL.COM
Subject: FTE Perf - Re: 96 F150 Horsepower Figures

Yes, Sleddog, you are correct in that they can be modified but only on the
upper. The lower manifold on the trucks is similar in flow rates to the GT40
or Cobra intakes. BUT the truck upper is severely limited. Just from changing
back over to the truck intakes (GT40 was too open, lost GOBS of low end) I saw
from the gasket lines going from upper to lower that there was a lot of room
to open up the ports on the upper to match the lower. So I sent off another
upper that I had and had Extrude Hone gasket match the upper to the lower and
VOILA instant horsepower gain (10-15 hp rear wheels) and still had my low end.
But then again I haven't had a chance to see if the GT40 would work better
with my present combo. I had that done when I was just starting the
performance mods on my 5.0 truck. It may work better now that the ported truck
manifold but I already sold it to pay for the porting work on my stock
one....sigh! Oh well I am still pumping out over 300 hp now in a 6000 LB
Supercab. And I haven't yet been able to eat any NEW BOWTIE CARS off the mark,
but the older RS models and IROC models have been flagged and tagged by my
Flareside on many occasions. I wont even talk about the trucks as they just
don't even come close. They all swear I'm on the giggle gas, But one swift
flick of the hood lever and I send them back to the machine shop! Just
think..if I ever do add the gas or a huffer.....maybe they'll reconsider their
original purchase and go BIG BLUE? If wishes were horses, beggars would ride.
Then again, if they could have anything they wished for they'd be driving
Blown Lightnings!
Just my . 02,
Wayne Foy
'94 Flareside Supercab
http://www.ford-trucks.com//lc/lc.php?action=do&link=http://members.aol.com/flr150/auto/index.htm
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Date: Mon, 04 Jan 1999 13:01:17 -0500
From: Garr&Pam
Subject: Re: FTE Perf - Re: 96 F150 Horsepower Figures

FLR150 AOL.COM wrote:
>
> Yes, Sleddog, you are correct in that they can be modified but only on the
> upper. The lower manifold on the trucks is similar in flow rates to the GT40
> or Cobra intakes. BUT the truck upper is severely limited. Just from changing
> back over to the truck intakes (GT40 was too open, lost GOBS of low end) I saw
> from the gasket lines going from upper to lower that there was a lot of room
> to open up the ports on the upper to match the lower. So I sent off another
> upper that I had and had Extrude Hone gasket match the upper to the lower and
> VOILA instant horsepower gain (10-15 hp rear wheels) and still had my low end.
> But then again I haven't had a chance to see if the GT40 would work better
> with my present combo. I had that done when I was just starting the
> performance mods on my 5.0 truck. It may work better now that the ported truck
> manifold but I already sold it to pay for the porting work on my stock
> one....sigh! Oh well I am still pumping out over 300 hp now in a 6000 LB
> Supercab. And I haven't yet been able to eat any NEW BOWTIE CARS off the mark,
> but the older RS models and IROC models have been flagged and tagged by my
> Flareside on many occasions. I wont even talk about the trucks as they just
> don't even come close. They all swear I'm on the giggle gas, But one swift
> flick of the hood lever and I send them back to the machine shop! Just
> think..if I ever do add the gas or a huffer.....maybe they'll reconsider their
> original purchase and go BIG BLUE? If wishes were horses, beggars would ride.
> Then again, if they could have anything they wished for they'd be driving
> Blown Lightnings!
> Just my . 02,
> Wayne Foy
> '94 Flareside Supercab
> http://www.ford-trucks.com//lc/lc.php?action=do&link=http://members.aol.com/flr150/auto/index.htm
> == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html


The GT-40s on the Lightnings don't seem to take away yhte low end grunt!
I have heard though that the regular F150 intake can be extrude honed to
flow just as well as the GT-40....I my self want a Cobra upper intake
for my Lightning.
It is fun watching people when they get whooped by a truck, including
the should be fast trucks V8 Dakotas(5.2 or 5.9) and 454 SS to go along
with the Mustangs and Crapmaros...less alone those morons with thier
CRXs or Z24 who don't know any better. I get a thrill just looking at
thier faces when they can't figure out why they lost! Or even better
yet..if they pull up next to you at the next light(most don't) the
stories(excuses) they tell you.
Wouldn't you like to have a blown Lightning...the 99s are blown form the
factory! I wish I had a blower!

94 Lightning #381
NLOC #238
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Date: Mon, 4 Jan 1999 14:31:51 -0500
From: am14 daimlerchrysler.com
Subject: FTE Perf - Pushrods 429/460

Happy New Year All.

When mixing and mismatching heads on the 429/460 series engines, which
pushrods do I use??
The ones that were stock with the block, or the ones that were stock with
the heads??? I tend to want to use the ones that were stock with the block
(since it is the block height that changed), but I want others opinions..
I am having some problems getting 2 different engines to run smoothely, and
I have found that I have two (2) different lengths pushrods in both of
them. (Yeah I know -- foolish mistake).

Azie
Ardmore, Al.


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Date: Mon, 4 Jan 1999 15:00:00 -0500
From: Sleddog
Subject: RE: FTE Perf - Pushrods 429/460

afaik all stock 460's with stamped steel rockers, nonadjustable, and
hydraulic lifters have the same length pushrod.

so, did you swap different rockers? or was one a early adjustable head
with guide plates but stamped rockers?

CJ heads are raised i think and have a longer pushrod length, but since i
never had a set of these heads i am not sure if that is true.

i would pull all of them out of both engines first. then sort them by
size.

try both sizes in one engine and check the geometry when properly adjusted.
find the size that fits and go from there.

also, if the heads have been to a valve grinder, they may be deeper in the
heads, or the end trimmed shorter. if there ever was a performance build
on the heads they have longer valves in them already for better springs.
are CJ valves longer? i do not know.

sleddog

ps-you may find you have multiple sizes, not just 2. if this is the case,
you should be looking at getting a pushrod length checker (expensive 50-60
bucks) and find the right length. sometimes people use cut to length
pushrods to correct poor geometry (just like the FE or other engines)
cuased by wear or poor machining/assembly.

- ----------
From: am14 daimlerchrysler.com[SMTP:am14 daimlerchrysler.com]
Sent: Monday, January 04, 1999 2:31 PM
To: Perf-list ford-trucks.com
Subject: FTE Perf - Pushrods 429/460

Happy New Year All.

When mixing and mismatching heads on the 429/460 series engines, which
pushrods do I use??
The ones that were stock with the block, or the ones that were stock with
the heads??? I tend to want to use the ones that were stock with the block
(since it is the block height that changed), but I want others opinions..
I am having some problems getting 2 different engines to run smoothely, and
I have found that I have two (2) different lengths pushrods in both of
them. (Yeah I know -- foolish mistake).

Azie
Ardmore, Al.


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Date: Mon, 04 Jan 1999 21:51:05 -0500
From: Ken Payne
Subject: FTE Perf - ADMIN: TruckTough.com

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Date: Mon, 4 Jan 1999 22:29:52 EST
From: SpyderLv81 AOL.COM
Subject: FTE Perf - Inline six NEED HELP!!!!!!

I have a 84 F-150 with a carburated 4.9l. I am rebuilding this engine and was
going to put a 4 barrel carb and intake on. Since the new carb wont have all
the sensors I guess I will need to disconnect the computer also. I need this
truck to be able to pass smog in Nevada. Any comments would be appreciated.
The sooner the better I will have the block ready to put back in the truck in
a week or so.

Spyder
84' F-150
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