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End of GM 3.8l motor


scottie.harris
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I think Pauly would be surprised, maybe even impressed with what you can do with a GM computer! I'm not sure on the newer stuff, but the pre-OBD2 ecm's could control boost with the right OE-based software, stuff that's free for the DIY crowd. The source code is out there for the older stuff, and many people have hacked and tuned it like crazy!

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You said "dollar for dollar". I bet you dollars that the intake' date=' nitrous and exhaust on that [b']3.0 VQ cost far less than the supercharger/turbo setup that's on the Grand Prix.

Maybe... but it's not apples to apples. You'd need to find a turbo VQ or I'd need to find a nitrous 3.8L to get apples to apples. Plus, the GP has more than a couple tenths on the VQ.

Injectors... I don't know if they're upgraded or not, but you'd have to do the same thing for nitrous.

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Your choice I suppose on not running a piggy-back fuel system to support nitrous... not what I'd do, but that's your call.

Cooler charge, more oxygen + same amount of fuel = not a good time for metal bits. Of course now you're getting into different types of nitrous systems (wet vs. dry) and how to meter each of them properly.

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:confused:

What do you think Nitrous does? Nitrous is NOT a fuel, it's an oxidizer. Fuel, or more accurately the capacity to supply it, in a Nitrous application is just as important as a turbo/supercharger app. In fact, some would argue even more-so in a Nitrous application. Sh*t can go wrong real quick at the molecular level when using a oxidizing agent rather than an air compressor on top of another air compressor.

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Flipside' date=' I love imports. Not gonna' deny the snazzy of some of these four-bangers making 300+hp to the front wheels.[/quote']

Fixed.

Fail Wheel Drive FTL.

Now, to fill this thread with moar "import" muscle. Here's my t00ner's ride. 1/2 throttle in 2nd, and 3/4 throttle in 3rd. :)

http://www.youtube.com/watch?v=LqcXZQnW2vs

By "import" muscle I mean LSx block. :D

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I just wanted to see if you were following the thread! :D

oh but of course, I had a small dog in it for awhile. Plus, I still love cars and its one topic I can contribute at least something productive to :D

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Since we are talking 3.8's and GN's here is some info on my uncles 87 GN and a few pics. In the article it says he has run a 10.57, iirc he has run in the low 10.4's since the article was written.

This was from a write up about him on a Turbo Buick site.

"I would hazard a guess that there are not many original owner Grand Nationals (or Turbo T/ T-Types) around 20+ years after they were new. And probably fewer still that are driven the way Buick intended them to be. That, to me, makes Mike’s car that much more special. I asked him home he got into Buicks and this is his story. “I was originally a Chevy guy. I bought a LS-6 Chevelle new in 1970 and raced it every week in 71 before I got married in 72. It ran low 12's and I won a lot of races in 71.” (Isn’t this how Red got started?!?) “After I got married we sold the Chevelle. In 1987 a friend at work took me a ride in his T-Type and that started the fire again for performance. I worked in engineering for GM and drove company cars so I immediately entered a request for a GN to drive as my company car. There were some screw ups in the order system and I almost missed out but I got one of the last ones built in Oct 87. It was one of five GN's that were going to Harrison Radiator Div. in Lockport, NY but had not been assigned. I drove the car until March 88 and then bought it at a very good price. My wife and I agreed that the LS-6 Chevelle had gotten away from us but we would keep the GN and I've been a Buick guy ever since.”

“I didn't take the GN to the track until I think 91 where I met , AKA ‘XCESSIV’” (another original GN owner I believe, who also ran THS in Columbus in 2009), “and a group of Turbo Buick guys at TriState (Dragway in Hamilton, Ohio). I took it to the track in 92 and ran a 13.90 with a Kenny-Bell chip. I've been running it ever since. I was running mid 12's still stock when I blew a head gasket in 96. I then upgraded with Champion heads, a 210-205 cam, and a TE-44 turbo with blue tops and ran this until 2005 when an intake runner cracked at BG spraying water into the # 3 bore leaving a hair line crack. The best I ran with this combo was 11.08 @ 123. I then talked to my very good friend Lee Thompson about helping me build a new combination with the goal of mid 10s.”

“Here is my current combination.

Motor - NA 109 bored to 3.820 with a Weber 3.55" stroker rotating assembly, internal balanced and a girdle installed. The rods and mains have .0015 max clearance. The cam is a 218-224 billet hydraulic roller. The Champion iron heads have T&D 1.5 roller rockers installed. The injectors are 60 lb Motechs and I have a dual M 10 nozzle Razor alky system. The turbo is a Limit TE-45a with a stock location Mark Jackson 20 row intercooler for the stock look. I use the stock computer with a TurboTweak chip.

Transmission - 200 4-R set up to shift at 6000 rpm with Alto Red clutches and intermediate band, with billet servo, input shaft, forward drum & overdrive carrier. The converter is a Precision 5 disc with a 0 pump.

Rear end - Stock with Mosier axles, air bags and HR Parts lower arms.

Front suspension - 90/10s with the sway bar removed.

Exhaust - stock headers with a 3" TH down pipe and an Applied Technologies 2 1/2" dual exhaust.

Tires - M/T 9.0/15-28 ET drags with stock fronts all on Convo Pros.

The car weighs 3750 with me and 1/2 tank of gas and has 39,000 miles.

Best ET 10.54 Best MPH 128.5 @ 25 lbs - still tuning.”

Still has the A/C hooked up, and blows as cold as it did in 87, radio with power antenna, completely stock interior, stock drive shaft, stock rear end gearing.

“The below picture of Mike and his car was taken in Norwalk, Ohio in 2009 on its way to a 10.57 ET.”

87GN-1.jpg

87GN2.jpg

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He runs at Tri-State or Edgewater. He doesn't do many runs at either place anymore, but he'll drive it to the occassional test and tune now and then. We used to go to both places quite a bit a few years back.

Now he'll take it up to Muncie with the Buick Club, or go down to Bowling Green for the Buick Nationals. This past summer he drove it to Nashville iirc, to run with the Hot Rod Power Tour for 2 sessions.

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He runs at Tri-State or Edgewater. He doesn't do many runs at either place anymore, but he'll drive it to the occassional test and tune now and then. We used to go to both places quite a bit a few years back.

Now he'll take it up to Muncie with the Buick Club, or go down to Bowling Green for the Buick Nationals. This past summer he drove it to Nashville iirc, to run with the Hot Rod Power Tour for 2 sessions.

this would've been back around 2005 ish when I lived down in Clifton and would go a bunch with a few buddies who had decent cars

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