Nick Muzzio
Wheeler
Reged: 09/04/02
Posts: 239
Loc: BC, Canada
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Hey guys thought i would make a cool post for all you people who want more horsepower. I wanted to get some opinions on a few things and share some information that I have come across so fare.
First let me put up some links of some relevent cases as well as some brands:
This is a whole very dedicated site to a 3.4L blown blazer, very good!!
http://home.earthlink.net/~micfly/s-series.htm
Here are some companies which I would consider to purchase from:
Inline Aire Filter (great to use with snorkels
http://www.prmracing.com/
Air Bonnet (carb cover, throttle body hat)
http://www.superiorairflow.com/extreme_velocity.htm
Powerdyne BD-11A Supercharger:
http://www.proficientperformance.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=powerdyne&Product_Code=A10148-111
Vortec Superchargers:
http://www.vortechsuperchargers.com/products/units/
Thats good for now I'll add some more urls later.
Some things I would like to know personally about the whole subject in general.
Is a Supercharger with oil lines better or worse then a oiless design?
What is involved in connecting oil lines?
Opinions on buying used superchargers?
Opinions on brand names and performance?
Pretty much I'm just trying to brainstorm a plan together for producing more power out of the V6's and trying to keep it under the 800-1200$ budget.
SO fair I have found that u need at the bair minimum these things:
-supercharger, w/tubes for intake & proper pully
-supercharger bracket (probably the most fabrication needed)
-a new belt for the pully
-Inhance Fuel delivery, usually with fuel regulator
-recomended blow off valve
-recomended ECM tunning
-optional intercooler
Other then that and finding room for all this stuff it should be pretty simple to do, especually if one uses an oiless design.
All thoughts & comments welcome.
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91 Trooper LS, 5 Speed Manual
3.4L Engine w/4.3L Throttle Body
Snorkel, 31" Pro Comp MT Tires, 2"lift,
ProComp ES9000 shocks and steering stabilizer
http://members.cardomain.com/sun_thief
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CPOM
Body Damage is Cool
Reged: 10/19/02
Posts: 2285
Loc: Boston (roslindale)
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Read Dan's site for a lot of insight.
http://www.houlster.com/amigo/performance.htm
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CHRIS
98 Amigo, 92 Pup
need a pickup 1st gen fuel level sender
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CPOM
Body Damage is Cool
Reged: 10/19/02
Posts: 2285
Loc: Boston (roslindale)
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http://614streets.com/2.8.html
http://614streets.com/Fageol.html
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CHRIS
98 Amigo, 92 Pup
need a pickup 1st gen fuel level sender
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Nick Muzzio
Wheeler
Reged: 09/04/02
Posts: 239
Loc: BC, Canada
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Oh very cool! I had no idea that any company made a pull through supercharger kit for GM V6!!! SO now I'm getting some more options. It looks like one needs a whole new intake manifold for the Fageol supercharger kit and a lot of fab work. Looks a little tall to fit under the hood but I'll do some research on it.
Curious? WHat are the benifits of a pull through supercharger compaired to a blow throw supercharger?
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91 Trooper LS, 5 Speed Manual
3.4L Engine w/4.3L Throttle Body
Snorkel, 31" Pro Comp MT Tires, 2"lift,
ProComp ES9000 shocks and steering stabilizer
http://members.cardomain.com/sun_thief
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CPOM
Body Damage is Cool
Reged: 10/19/02
Posts: 2285
Loc: Boston (roslindale)
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From what I have read on that site, the IM is included with the blower. It is a low profile IM to make up more space.
The one clear advantage of pull through is not having to deal with gas-charged air spewing out of every orifice of the TB/carb since the pressure is not added until after the throttle blades. There is also half as much plumbing involved.
The flip side is that pull through SCs have to deal with fuel in the air, so they are designed with different seals to compensate. Blow through SCs pressurize air, no gas added yet.
That's just what I know, I'm sure there are more important differences.
I would figure out which setup is going to produce power in the the part of the torque curve where you will be spending most of your time: pull through, blow through, SC vs. TC. Size, spool-up speed vs. lag. That is where you should spend some research.
All the work will be for naught if you design some system that sees huge power gains at 7000 RPM and lags beforehand.
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CHRIS
98 Amigo, 92 Pup
need a pickup 1st gen fuel level sender
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Nick Muzzio
Wheeler
Reged: 09/04/02
Posts: 239
Loc: BC, Canada
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Well I went and looked up the price of the kit for the s-10 and was pretty upset to see the pull through design is about the same price as the blow through design. The thing is that I can find some used blow though design superchargers for less then 1000$ on ebay and I cant find any pull through designs except for V8's on ebay. So It looks like I would like to focus on the blown through designs.
A question that I would like to know is looking at the S-10 Blazer that has a superchargersetup on the link I first posted, he has the supercharger on the A/C compressors side. Now My trooper I would imagine has about the same hood size as a blazer (please let me know if u know for sure!) and It looks like the only thing that would get in my way is my oil lines from my oilcooler. Now I was thinking its almost perfect because if I get a oil driving supercharger my oil lines would be right there right???
I also read a couple places that one needs to change the compression ratio of their engine for the forced air to around 9:1 compression ratio. But isnt that what the 3.4L has stock?
Also if I were to do this fun project I think I would have to mess with the ecm a bit to deal with the extra air. I know I would need a 2 BAR MAP sensor so it could sense the extra pressure. What else would be needed? Could the stock computer be modified to adjust? What about a msd ignition, the ones with the built in retard fuction for turbos?
Any thoughts?
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91 Trooper LS, 5 Speed Manual
3.4L Engine w/4.3L Throttle Body
Snorkel, 31" Pro Comp MT Tires, 2"lift,
ProComp ES9000 shocks and steering stabilizer
http://members.cardomain.com/sun_thief
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chasespeed
Body Damage is Cool
Reged: 10/09/03
Posts: 1318
Loc: Monson, MA
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Nick, you have raised some great questions..but they can only be answered by you...
The centrifigal S/C(the one that looks kinda like a turbo), has several advantages fro you setup..
It has the ability to cool the charge air(intercooling / aftercooling)adn be mounted in a relatively more conveient location.
But, you have to worry about pressureizing you throttle body, (and in some cases the carb).
And welcome to the joys of GMs "Speed density" fuel mapping. You will need to take the truck to a facility that does reprogramming, and preferably has a chassis dyno to tune it.
The other more common type os S/C, is the Roots Blower. You know, those big 'ole lungs on top of old muscle cars..
They are much simpler, but can be rebuilt much easier, adn made more effecient. But, you cant easily cool the charge air...
You will have some common problem with them both though.
What is your compression ratio, and what do you want to run in bosst? If you have a 9:1 CR, I would try to saty below 4 psi. Yuo are going to have to make the fuel injection meet the demands of the S/C, or you will run lean, and fry rings.
Yes, the MSD 6AL, w/ Boost timming master, is a definate help in the ignition department.
Oh, and S/C are not "oiless", they are just self contianed. The self contained ones just dont get oil lines drilled into the pan.. But, I see no problem wiht a self contained one either, as roots blowers have been doing that for as long as the have been around..'
HTH, and hope I didnt leave anything out...
Chase
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Chase
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