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Car Forum / Chevrolet / Chevrolet Trucks / May 2005

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installed an Edelbrock 10" air cleaner.. WHAT A DIFFERENCE!!

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Bret Chase - 13 May 2005 02:53 GMT
today I took my B-day money and picked up a 10" Edelbrock air
cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
TBI350.  I took it and found the biggest 10" air filter the store had
(Fram CA126.. I think, about 4" tall).  I removed the PCV spacer on
the throttlebody and set the  air cleaner base directly on the TB
itself.  the injectors were finally where they should be... in the air
cleaner, not shrouded by the PCV spacer.
I ran the truck after.. holy sh.t what a difference!  I'd have never
thought it would have made that much of a difference!.

I've got pics on my livejournal

http://www.livejournal.com/users/bretsk2500

I'm now plotting my next move... I'm thinking either the Flowtech
afterburner headers, Y pipe and new honeycomb cat (still have the
original monolithic), or an Edelbrock TBI intake and 1.6 rockers.  

I'm not currently running any muffler.  The truck sounds awesome, and
isn't really that loud at all, I'd say the restrictive monolithic cat
is quieting it down alot

new heads are out of the question as I can't afford either new Vortec
heads with the GMPP TBI intake or junkyard Centerbolt TPI corvette
heads.

any thoughts?

-Bret
\ - 13 May 2005 05:09 GMT
> today I took my B-day money and picked up a 10" Edelbrock air
> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>
> -Bret

Bret,

That's the exact same air cleaner I've been running for 4 years on my 88'
C1500 and I'd never go back to a closed-element factory aircleaner again.
There is one drawback.................you'll be changing air filters every
time you chain oil!  They get dirty pretty fast.............

Exhaust is next for me as well.  Hooker has a nice set of super comp headers
and true duals (pre-bent) for under $400 for the set (including turbo
mufflers).  I can give ya part numbers if interested.

Doc
Bob - 13 May 2005 05:16 GMT
>> today I took my B-day money and picked up a 10" Edelbrock air
>> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 32 lines]
> There is one drawback.................you'll be changing air filters every
> time you chain oil!  They get dirty pretty fast.............

So what's the problem? If they flow a lot of air but stop most of the dirt
it sounds like a win, win situation. Beats the hell out of K&Ns crap which
flows well but doesn't stop anything smaller than a rat turd from getting in
the engine. Air filters are cheaper than engines
                                   Bob
Bret Chase - 13 May 2005 21:24 GMT
>:|Bret,
>:|
[quoted text clipped - 8 lines]
>:|
>:|Doc

are you using that tiny 2" tall filter or did you get a taller one
like I did?

-Bret
\ - 13 May 2005 22:20 GMT
>>:|Bret,
>>:|
[quoted text clipped - 17 lines]
>
> -Bret

I got a 4" element like you have..................Purolator Filter, can get
the P/N if you'd like.

Doc
Bret Chase - 13 May 2005 23:59 GMT
>:|"Bret Chase" <nunya@business.net> wrote in message
>:|news:o63a81panqedu6cj7mpvpsnc2giqnj1b26@4ax.com...
[quoted text clipped - 27 lines]
>:|
>:|Doc

the Fram CA192 I'm using is only 3.5" tall..... it interchanges to a
Purolator  A30067... is that what you're using?  I'd like to find one
that is truly 4" tall, but I was pressed for time when I was at the
parts store.  

-Bret
burntkat@gmail.com - 14 May 2005 06:15 GMT
Hey Doc, Bret, others- LTNT!!

Doc, would appreciate the PN's for the edelbrock unit, and to know if
you're using the K&N filter still with it <PN for that, too?>

I'm thinking it will work well with the Blazer's 4.3 <till I put a 350
in her> as it uses the same TBI unit your SBC does.

The Blazer will soon be getting that SAS I've been planning and
gathering parts for over the past 5 years. Finally got a house, and now
have a garage to work in. I'm thinking the wife will actually be HAPPY
to see me working on it and taking up most of the garage for a little
while, as it'll mean getting at least 1 of the 3 axles, 4 tires and
rims, and a host of small parts out of the back yard... ;) >

Doc wrote:

> >>:|Bret,
> >>:|
[quoted text clipped - 22 lines]
>
> Doc
Bret Chase - 14 May 2005 12:44 GMT
>:|Hey Doc, Bret, others- LTNT!!
>:|
[quoted text clipped - 10 lines]
>:|while, as it'll mean getting at least 1 of the 3 axles, 4 tires and
>:|rims, and a host of small parts out of the back yard... ;) >

it's the Edelbrock 10" Pro-flo chrome aircleaner. I got it for $24.95
at Autozone.  I don't (nor Doc) uses a K&N.  I've got a Fram CA192 in
mine, I'll replace it with a purolator or a WIX (hopefully a litle
taller one) before too long.

-Bret

>:|Doc wrote:
>:|> "Bret Chase" <nunya@business.net> wrote in message
[quoted text clipped - 34 lines]
>:|>
>:|> Doc
\ - 14 May 2005 15:36 GMT
> Hey Doc, Bret, others- LTNT!!
>
[quoted text clipped - 10 lines]
> while, as it'll mean getting at least 1 of the 3 axles, 4 tires and
> rims, and a host of small parts out of the back yard... ;) >

Where the hell have you been hiding bud!?  Good to see yer' still kickin'!
BTW, Bret's responses are exactly what I would have said............10"
Pro-Flo (Edelbrock PN 1208), hell no to K&N, running a Purolator filter,
will get the number later today as I'm headin' out to tinker with my nitor
trucks in a few.

Doc
burntkat@gmail.com - 14 May 2005 16:12 GMT
nitro trucks, eh? What sort-- I just got my Nitro MT and TMaxx back out
the other week...
\ - 15 May 2005 05:49 GMT
> nitro trucks, eh? What sort-- I just got my Nitro MT and TMaxx back out
> the other week...

Megatech Gladiator 1/10 scale.

Doc
I'm Right - 13 May 2005 15:12 GMT
stop smoking crack

it makes MORE NOISE its not one bit faster

> today I took my B-day money and picked up a 10" Edelbrock air
> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>
> -Bret
Bret Chase - 13 May 2005 21:23 GMT
>:|stop smoking crack
>:|
>:|it makes MORE NOISE its not one bit faster

well I'm not going to argue with you about it.  it's no more noisy
than the factory air cleaner, except at throttle tip in.

-Bret
Rich B - 14 May 2005 02:15 GMT
You might want to check out CFM Technologies; they have some excellent
products.  I have the injector tower spacer installed on my 1990 350ci
Suburban and I can honestly say that it works as advertised.  I also
installed the spacer on my son-in-law's tired old 1987 Suburban 350 and
you could even feel the difference on it.   All it does is raise the
injectors up higher in the TBI, which increases air flow and widens the
spray pattern.
http://www.cfm-tech.com/catalog/air_intake_-_injector_spacer_549426.htm


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~

Climbing into a hot car is like buckling on a pistol.  It is the great
equalizer.  ~ Henry G. Felsen 1964 ~
Bret Chase - 14 May 2005 02:31 GMT
>:|You might want to check out CFM Technologies; they have some excellent
>:|products.  I have the injector tower spacer installed on my 1990 350ci
[quoted text clipped - 12 lines]
>:|Climbing into a hot car is like buckling on a pistol.  It is the great
>:|equalizer.  ~ Henry G. Felsen 1964 ~

I've had their website bookmarked for a long time.  IMHO, by
unshrouding the injectors w/ the edelbrock air filter, I accomplished
the same thing as the injector spacer, if not better.

-Bret
\ - 13 May 2005 22:21 GMT
> stop smoking crack
>
> it makes MORE NOISE its not one bit faster

Uh huh, tell that to my rear tires, which wouldn't lite up with the facotry
airbox, but will lite up on command with the Edlebrock unit and huge filter.

Doc

///////////////////////////////////////////////////////////////////////////////

>> today I took my B-day money and picked up a 10" Edelbrock air
>> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>>
>> -Bret
Todd Copeland - 14 May 2005 00:45 GMT
> > stop smoking crack
> >
> > it makes MORE NOISE its not one bit faster
>
> Uh huh, tell that to my rear tires, which wouldn't lite up with the facotry
> airbox, but will lite up on command with the Edlebrock unit and huge filter.

I'd have to agree somewhat with "I'm Right"... a non-high performance
vehicle might gain about 5hp from a change in an air filter alone. There is
just no way for anyone to feel an increase of 5hp. On the same note, my
truck runs _much_ better just after having been washed and wax. Go figure.

At best, a vehicle migth gain 15hp but this is only in the highest of
performance stock vehicles. Even then, it's rare.
Hairy - 15 May 2005 06:20 GMT
> > stop smoking crack
> >
[quoted text clipped - 4 lines]
>
> Doc

Correct me if I'm wrong, but I think I remember you saying, many times, that
the stock airbox will flow way more air than a stock engine can use. In any
case, the open air filter would only make a difference at WOT when the
engine is really sucking air. How much time do you spend at WOT?
H
\ - 15 May 2005 15:26 GMT
> Correct me if I'm wrong, but I think I remember you saying, many times,
> that
[quoted text clipped - 3 lines]
> engine is really sucking air. How much time do you spend at WOT?
> H

You've misquoted me.  I have said many times that the stock air FILTER (not
airbox) will flow more air than the engine can use.  Put that filter in a
restrictive OEM airbox and it can't perform to potential.

You fellas are missing some other key points here as well:

Lowering the filter element by removing the PCV shroud effectively puts the
injectors directly in the flow of incoming air and promotes better
atomization.

Using an air filter with a smaller diameter but greater height changes the
direction air enters the throttle body and passes by the injectors; it is
pretty much on a straight downward course as opposed to traveling sideways
thru the filter then making a 90 when it hits the vacuum of the intake
stream.  This increases air velocity and also helps with proper atomization.

Doc
Bret Chase - 15 May 2005 19:53 GMT
>:|> Correct me if I'm wrong, but I think I remember you saying, many times,
>:|> that
[quoted text clipped - 21 lines]
>:|
>:|Doc

I'm going to go outside and take a picture of the factory air intake
on my truck... maybe then they'll se why it makes such a difference.

-Bret
Whitelightning - 15 May 2005 22:42 GMT
> You fellas are missing some other key points here as well:
>
[quoted text clipped - 9 lines]
>
> Doc

My memory aint what it once was, but it seems to me we used to place 2-4
inch high  "velocity" stacks between the air filter housing and the carbs to
increase horsepower and torque.  The idea being to give the air a chance to
start flowing in a smooth downward direction.  and also speed the air flow
up through the carb.  So removing the base adaptor in favor of a flat floor
air cleaner housing seems to go counter to that line of thinking.
Given how hot under hood temperatures are, not using a snorkel system of
some sort seems counter productive as well.  will agree the stock ones in
most cases are too small, and modifying them to use two hoses such as Buick,
Olds and Chrysler did back in the day (as well as others) would be the way
to go coupled with a 4" velocity stack.
As to Harry's question about WOT, I put Brett between 17 and 24 closer to
17, so I would say the poor rig spends considerable time at WOT.

Whitelightning
Bret Chase - 16 May 2005 00:07 GMT
>:|> You fellas are missing some other key points here as well:
>:|>
[quoted text clipped - 27 lines]
>:|
>:|Whitelightning

actually I'm 31

-Bret
Bret Chase - 16 May 2005 00:58 GMT
>:|My memory aint what it once was, but it seems to me we used to place 2-4
>:|inch high  "velocity" stacks between the air filter housing and the carbs to
>:|increase horsepower and torque.  The idea being to give the air a chance to
>:|start flowing in a smooth downward direction.  and also speed the air flow
>:|up through the carb.  So removing the base adaptor in favor of a flat floor
>:|air cleaner housing seems to go counter to that line of thinking.

removing the PCV adapter is to get the injectors and fuel pressure
regulator out of the way.

which if you look at
http://home.gwi.net/~amychase/images/shrouded_injector.jpg

you'll see that they take up more than half of the area allowed by
the PCV spacer.  carburators don't have to worry about injectors or
FPR's.  the only thing in the bores are the annular boosters and they
take up less than 10% of the area. this is why *in this application* a
flat bottomed aircleaner with a tall element is better than a velocity
stack.

the bigger problem is illustrated by:
http://home.gwi.net/~amychase/images/snorkel1.jpg
and
http://home.gwi.net/~amychase/images/snorkel2.jpg

the snorkel, which is over 2 feet long is a meager 1"X4" on the
outside and makes 3-90 degree turns.  so giving the pipe an internal
area of 2.8sq in (assuming a wall thickness of .125".  of course the
throttle bores have a combined area of 4.4 sq. in. aka a loss of more
than 36% of flow potential.

>:|Given how hot under hood temperatures are, not using a snorkel system of
>:|some sort seems counter productive as well.

no one said it wasn't.  all I ever said was the open air cleaner *in
this application* is better than the *stock* configuration

will agree the stock ones in
>:|most cases are too small, and modifying them to use two hoses such as Buick,
>:|Olds and Chrysler did back in the day (as well as others) would be the way
>:|to go coupled with a 4" velocity stack.

well with a 4" stack, the stock air box would be sticking through the
hood.

>:|As to Harry's question about WOT, I put Brett between 17 and 24 closer to
>:|17, so I would say the poor rig spends considerable time at WOT.
>:|
>:|Whitelightning

I love how these always devolve into "you're some dumb punk kid who
doesn't know sh.t".  I'm a 31 year old happily married father of 3 and
my truck sees WOT about 2% of the time, if it's even that high.

-Bret
Whitelightning - 16 May 2005 04:36 GMT
> I love how these always devolve into "you're some dumb punk kid who
> doesn't know sh.t".  I'm a 31 year old happily married father of 3 and
> my truck sees WOT about 2% of the time, if it's even that high.
>
> -Bret

I'll admit to making a bad assumption on the age based on the wording of the
first post.
It sounds like a 17 year old whose parents gave him a decent chunk of change
for his birthday.

Whitelightning
\ - 16 May 2005 05:01 GMT
>> I love how these always devolve into "you're some dumb punk kid who
>> doesn't know sh.t".  I'm a 31 year old happily married father of 3 and
[quoted text clipped - 10 lines]
>
> Whitelightning

The air cleaner is $24.95 at Autozone..........you define that as a decent
chunk of change?

Doc
Elbert - 13 May 2005 23:10 GMT
>today I took my B-day money and picked up a 10" Edelbrock air
>cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>
>-Bret

got a similar truck  92 version k1500 350 TBI

what did you do with the pvc plumbing?

is the 10" the largest in diameter that will fit on that
style engine?

also saw you guages on your web site moutned on the A-pillar...
what did you use to adhere the pod mount to the a-pillar?

Thanks, Elbert
---
Elbert Clarke
elbert.clarke@**adelphia.net
remove ** to email
Bret Chase - 14 May 2005 01:19 GMT
>:|got a similar truck  92 version k1500 350 TBI
>:|
>:|what did you do with the pvc plumbing?

on the bottom of the Edelbrock air cleaner there is a port for a PCV
breather hose.  I removed the spacer ring and ran a 1/2" hose from
that port to a shortened section of the factory hard pipe to the
grommet in the valve cover.  I'm planning on getting the Edelbrock
#4410 breather with nipple to replace the black plastic hard pipe.
on my LJ, in the picture of the base, the port is directly under my
thumb.

>:|is the 10" the largest in diameter that will fit on that
>:|style engine?

yes and no...

if you can find a 14" air cleaner with a flat bottom, it'll fit.

>:|also saw you guages on your web site moutned on the A-pillar...
>:|what did you use to adhere the pod mount to the a-pillar?

it's an autometer gauge cage that comes with 4 plastic fasteners that
you drill holes for and push them in.

-Bret
Elbert - 14 May 2005 02:40 GMT
>>:|got a similar truck  92 version k1500 350 TBI
>>:|
[quoted text clipped - 7 lines]
>on my LJ, in the picture of the base, the port is directly under my
>thumb.

>>:|is the 10" the largest in diameter that will fit on that
>>:|style engine?
[quoted text clipped - 10 lines]
>
>-Bret

Ok I figured as much on the pvc plumbing...

I believe what we use to call plastic rivits would work
on what you are talking about on the guage pod.

I don't care for the OEM PVC air cleaner extension either

I'm a fan of the old style "hot-rod" type air clearners but they do
pull in all the hot underhood air. I think the factory setup that
pulls air from the RH fender well is a pretty good idea. I removed the
hot air intake section from the OEM  air cleaner and that heat
operated valve becuae I no longer could tell it was opening up all the
way. I cut some sheet metal and rivited it across the gap where the
valve use to be. I don't see the need for the hot air intake from the
exhaust manifold  on a fuel injected engine anyway.

Elbert

---
Elbert Clarke
elbert.clarke@**adelphia.net
remove ** to email
Bret Chase - 14 May 2005 12:51 GMT
>:|Ok I figured as much on the pvc plumbing...
>:|
[quoted text clipped - 13 lines]
>:|
>:|Elbert

if you look, air isn't actually drawn from the fender well, the air
is drawnfrom directly behind the passenger side headlights and routed
through the fender opening before making a 90deg turn to get through
the inner fender.  I had had the TAC disabled for a long time, as mine
no longer functioned at all... it was like my truck was trying to get
air through a straw.  the theory behind the TAC is to help warm the
air to prevent fuel from sticking to the cold sides of the intake
manifolds.  in this respect a TBI motor and a carbed motor are no
different.  

I've also got the rubber fender liners removed so I could get better
cooling (old radiator was marginal) so it doesn't get all that hot in
the engine compartment.  I'd like to make or buy a functional cowl
induction hood.. but time will tell.

-Bret
Elbert - 15 May 2005 16:09 GMT
>>:|Ok I figured as much on the pvc plumbing...
>>:|
[quoted text clipped - 30 lines]
>
>-Bret

you're right on the air intake path.... I had never bothered to verify
exactly where the point of entry was located. guess thats the pickup
version of a "cold-air-intake".  

I do like the sound of the open element air filter though.  

I can't say if my truck runs better with the open style air filter
in comparison with the OEM setup, but I do like the looks, and
simplicity / sound of the "old-school" edelbrock air filter assembly.
I did find about a 3" tall air filter to fit the 10" air cleaner, I
believe a 4" tall filter would be about perfect. Anyone know a part
number for a reliable filter let me know.

Elbert
---
Elbert Clarke
elbert.clarke@**adelphia.net
remove ** to email
I'm Right - 14 May 2005 15:31 GMT
friday night Test n Tune at the Local dragstrip would prove just how wrong
you are.

stock 3 passes that are consistant
then swap on that 10" air cleaner
then run again, 3 passes that are consistant

whats the difference?

0.02 of a second? , that would be the weight of the fuel burnt.

> today I took my B-day money and picked up a 10" Edelbrock air
> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>
> -Bret
\ - 14 May 2005 15:37 GMT
> friday night Test n Tune at the Local dragstrip would prove just how wrong
> you are.
[quoted text clipped - 6 lines]
>
> 0.02 of a second? , that would be the weight of the fuel burnt.

If you'll pay for it I'll run the dynos dude.............

Doc

>> today I took my B-day money and picked up a 10" Edelbrock air
>> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>>
>> -Bret
Todd Copeland - 14 May 2005 19:18 GMT
> If you'll pay for it I'll run the dynos dude.............

It's been done and on high performance engines it yields about 15hp. On any
other engine it yields about 5hp, less then anyone can tell by driving it.
Rich B - 14 May 2005 21:52 GMT
>Group: alt.autos.4x4.chevy-trucks Date: Fri,
>May 13, 2005, 9:31pm From:
[quoted text clipped - 4 lines]
>same thing as the injector spacer, if not better.
>-Bret

I think I should clarify my statement.  While installing a higher
flow-rate air cleaner will increase the flow to the TBI unit or carb.,
This spacer will lift the inectors out of the bore effectively
increasing the airflow capacity of the TBI unit (it's like enlarging the
throat of the TBI unit.   High pro air cleaners work but you can't flow
more air than will pass through the unit and that (flow capacity) is
dependent upon the size of the TBI or carb bore.  

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~

Climbing into a hot car is like buckling on a pistol.  It is the great
equalizer.  ~ Henry G. Felsen 1964 ~
Shades - 15 May 2005 03:56 GMT
I am just gonna put my 2cents in...

   It has been proven for years that a cold air intake will clearly
outperform an open element once under hood temps rise above exterior temps.
The problem with 90% of the factory air intakes, is that they are designed
for looks and sound deadening FIRST, and flow second.

   I fabricated a dual snorkel setup on my 'Burban and gained a handful of
tenths in average MPG. Slightly noticeable gain in performance especially
going down the freeway. I also had ALLOT better drivability for stop and go
driving!

   I always ran a 10inch open element filter with 2 4inch(or so)Fram
elements stacked on top of each other. Sick of always having a filthy
element after ANY off-road excursion and sick of replacing them every oil
change(as was mentioned), I installed a closed element filter from a late
'80's Chevy(tall element type) and routed  the tubing to a fairly open area
of the radiator support. I immediately felt a difference in performance. and
lost track of how many miles were on the element with hardly any dirt. I
also got 2-3 MPG better!

Just my 2cents...

> today I took my B-day money and picked up a 10" Edelbrock air
> cleaner.. the 14" has too deep of a dish to work on my '88 K2500,
[quoted text clipped - 25 lines]
>
> -Bret
 
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