Street Racing & Kill Stories Basic Technical Questions & Advice

2002 Z28, Heads/Cam/100 Shot vs 1986 Grand National, 72mm Turbo

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Old 08-04-2010, 06:41 AM
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Originally Posted by itsslow98
I bet hes making 650+rwtq the way it sits. They dont take much stall like LSX's hes prolly got a 3000 or 3200 stall max in that car.
I'm not sure what the stall speed is, but it made around 500 rwtq. The guy who tuned it said that another one with a smaller turbo and different torque converter made 538/600, so it's all in the total setup. I'm sure the modding isn't done, we don't kid ourselves
Old 08-04-2010, 10:04 PM
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lol i hear ya, yea my brother made 600tq with a 57mm and a stock blue stall(like 2200 factory)
Old 08-05-2010, 08:49 AM
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I haven't been able to get the new dyno sheet for the GN, but this is the one that he got when he bought it from the previous owner. This was on race gas. He now runs meth so he runs a similar boost level, but on pump gas. This dyno is of the uncorrected numbers, but he said his new dyno sheet is ver similar, just about 10 hp higher and a little more torque.


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Old 08-05-2010, 12:21 PM
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Nice vid and that rolling burnout was SICK!! That GN is no joke, but it would have been nice to get a roll with both taking off same time.

Gotta admit the sound of this GN kinda suck..
Old 08-05-2010, 05:55 PM
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Nice runs for sure. Love that GN
Old 08-05-2010, 09:50 PM
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Thats the same shop thats done all the work on my brothers its about 30 minutes from my house. They have gotten pretty bad lately with there work though(ALL GN, typhoon and scylone work). Somethin isnt right if hes only make that kinda power with a 72mm. My brother made a little over 400 with a 57mm on lower boost like 22-23.
Old 08-06-2010, 07:32 AM
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The previous owner had the work done, probably about 5 years ago or more. The shop that retuned it and installed the meth kit is up here in CT. The tuner at this shop said that with a bigger exhaust, well matched converter, and 67mm ball bearing turbo, the car would probably make 600 without a problem. From my understanding, it's all in the total combination, not just the size of the turbo, but I could be wrong since I know nothing about turbos. Beyond that I don't know what else to tell you.
Old 08-08-2010, 01:29 PM
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7am to go race, lol!! Good video and thread.




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