Author Topic: 8-second Street Legal Notchback  (Read 3880 times)

James

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8-second Street Legal Notchback
« on: October 25, 2010, 10:01:30 PM »
One of my best friend's project the last few years.  Started out as a demo car from Vortech and came with a S-trim, built AOD, and a somewhat built 327 SBF running mid 10's or so.  Two rebuilds and a lot of time, sweat, and late nights of wrenching, cutting, and grinding it has really come along.


Small frame 76mm turbo kit swapped in place of the S-trim.



Later upgraded to a medium frame GT76 (de facto turbo for 1000hp single turbo Supras).



Around the same time the engine was rebuilt with a Dart block and a 331 inch rotating assembly along with fuel, transmission, rear end, suspension, and ignition upgrades.  On this setup my friend made a point to drive the car nearly an hour to the nearest track to prove a point with some others who claimed they had fast street cars yet trailered them in.  He later drove home on fuel that was siphoned from an acquaintance's generator and got more than 20 mpg on the way back.

Some vids.

9.60's
http://www.youtube.com/watch?v=I6k59HUGswQ

9.37
http://www.youtube.com/watch?v=d6MnAwDd34Y

8.97 @ 156
http://www.youtube.com/watch?v=gs2dXqLyBqg

8.61 @ 164 (sorry about the commentator)
http://www.youtube.com/watch?v=BABoI2deUU4



Think the best so far is an 8.56 @ 167 before a rod let go early this year.  Has a 347 with a much bigger turbo now... ;D  Probably have it up and running within the next few weeks.

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Gael

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Re: 8-second Street Legal Notchback
« Reply #1 on: October 28, 2010, 02:19:28 PM »
Hawt.

When you say small frame 76mm turbo, then medium frame GT76, what do you mean? What's the difference?

Also, was the GT76 a GT42-76, if so, what size downpipe was he running?

Thanks brah.
Gael

James

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Re: 8-second Street Legal Notchback
« Reply #2 on: October 28, 2010, 02:47:58 PM »
Basically the bearing section, compressor major diameter, and exhaust wheel and housing size.  Both are 76mm if measured across the compressor tips but the GT4276 can support a lot more power, mainly because it can flow much more exhaust.  4 inch down pipe.




Now it has a GT4788.
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Gael

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Re: 8-second Street Legal Notchback
« Reply #3 on: October 28, 2010, 03:03:49 PM »
In that picture, what 2 turbos are you comparing?

I'll have to turboquiz you at some point in the future.. thanks for your answers though.

Sweet that it's a legit street car, vs the trailer queens.
Gael

slo svo

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Re: 8-second Street Legal Notchback
« Reply #4 on: October 28, 2010, 03:40:55 PM »
Looks like a Turbonetics HP76 and whatever the smaller frame 76 was on the car before...
LS1 Camaro Z28: TC76 turbo/T56/MWC 9"
FC Mazda RX7: LSX/T56
E34 525i: S50/Precision 6266
E39 540i/6 Sport

JD

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Re: 8-second Street Legal Notchback
« Reply #5 on: December 06, 2010, 12:32:15 PM »
Really cool.

That truck in the last video leaves like a sonofabitch!

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James

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Re: 8-second Street Legal Notchback
« Reply #6 on: December 06, 2010, 10:04:40 PM »
I think at the time that truck had a single 88mm and nitrous.  Now it has something around a 104mm and tuned for E85.
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