New best yesterday.

[rafael vasquez]

good job mike for sure my favorit GN!!!!!!!!!!!!!!!!!!

 

[Dusty Bradford]

If I do blow the tires off, it seams to do it on the 1/2 shift. With the 3.73 gear out back for streetability, the 1/2 shift comes on real quick. Last time out the car did a 1.50 short time on a 5 lbs launch.

Car has 1" lower (and stiffer) springs at all four corners with Bilstein shocks. Rear has HR boxed LCAs, and Metco adj uppers. Air bags have 8 psi left, and 12 psi on the right. 275/60/15 MT DRs run aprox 20 psi.

For track duty, I throw on the 90/10 drag shock on the front and loose the sway bar. And that's about it.

I'm sure that a looser spring up front would transfer the weight better, but I don't want to give up the way it handles on the street to do that. Can't seem to remember what I set the pinion angle at.

So, does the converter slippage in the upper RPMs look like it's not too bad?

Thanks Mike B.

Converter slippage doesn't look bad. 13% isn't considered awful by any means. When I first saw you were at 6000+ in the traps, I thought it was terrible but the 3.73 gear is the reason for that.

I do see you have some room for improvement. This 9.5 non lock can easily get you under 8% so it should definately see some gains. The old AC converters are good quality pieces and can get some great slip #'s but it takes around 6500-6700 rpm to couple them more efficiently. The 6000 rpm and lower motors usually do respond well to the 9.5 unit.

 

[John Wilde]

Mike,

Great pass congratulations.
The converter is ok, but you could pick up a PTC 9.5 NL from Dusty that could drop the slip to the 5-8% range.

 

[John Wilde]

Damn, Dusty treed me...

 

[SPOOLFOOL2]

Cool!

Thanks Dusty. That's what I wanted to hear. I think that the 3.73 gear also lets me get away with a little tighter stall and still be good in stop and go stuff.

Mike B.

 

[SPOOLFOOL2]

good job mike for sure my favorit GN!!!!!!!!!!!!!!!!!!

Thanks.

The most relaxing thing I get to do is work on my car.

Guess I've been chillin quite a bit lately.

Mike B.

 

[Blazer406]

My hat is off.... most people "loose sight" of it being a street car.... and way over turbo it.... and spend money they don't need to be spending..... and usually won't have near as streetable of a car. The 62 turbo has impressed me (I assume this is the billet 62 with those numbers on that low of a boost). The fact that you can run 10's at such a low boost is awesome. It also shows your heads are flowing nicely. I agree with others... a converter change might net some measureable gains..... but hey..... what you got is working pretty well.... or you wouldn't have got that 10 sec slip.... especially on that low of a boost.

Congrats! I hope to join the 10 sec club soon.....

 

[TURBOLICKER]

OK how did you kill the exhaust drone? I've tried both pypes mufflers,aerochambers, dynomax ultra flows and nothing does the job???

 

[SPOOLFOOL2]

OK how did you kill the exhaust drone? I've tried both pypes mufflers,aerochambers, dynomax ultra flows and nothing does the job???

Didn't kill it. just minimized it. A drone is not just a laud exhaust. It's the exhaust "note" hitting a certain frequency inside the exhaust pipe. Different combo of headers, turbo, down pipe, cat, mufflers and piping can readjust this frequency to minimize the drone, and move it to a rpm that you wont be at in cruz. Every combo is different. For me, my drone went from bad to worse when I took off my gutted cat, and put on one of those streight pipe with the three bolt plate to open your exhaust. This drone was right at cruz rpm too. So for long trips (like to the store and back) it felt like it was going to vibrate my fillings out of my head. The fix was simple. I had my local muffler shop cut off the three bolt dump, and weld it back up as just a streight pipe with no dump. Doing this, changed the frequency of the exhaust. Like changing the length of a tunning fork. It made the drone about 1/3 of what it was, and lowered it about three hundred rpms out of where I cruz at. I also had the muffler shop tack weld the shell of my cat around this pipe to look legal beagle.

Happy spooling.
Mike Barnard