Guest Posted January 24, 2001 Share Posted January 24, 2001 HI, i would like to know if a 6spd tranny from a new firechicken fit a 1987 GN? <P>also would this improve top end speed as well as launch?<P>Thanx in advance<P>-Gabe Link to comment Share on other sites More sharing options...
Guest Posted January 24, 2001 Share Posted January 24, 2001 No, the newer RWD cars use a chevy bolt pattern, while the older Buicks used a BOP pattern. I think though that a Manual in a GN would actually hurt more than help, as far a drag racing goes. You need to build boost to lauch. You can do this by powerbraking a auto, without hurting it too much. The only way to do this on a manual is to drop the clutch, which would self-desturct really quick.<P>-T Link to comment Share on other sites More sharing options...
Guest Posted January 26, 2001 Share Posted January 26, 2001 so what tranny could i use for top end speed? a 5spd manual from a 82-92 style comaro? or any suggestions please! i wanna know if this is possible to have top end speed with a good launch Link to comment Share on other sites More sharing options...
The Old Guy Posted January 26, 2001 Share Posted January 26, 2001 How fast do you want to go? The 87 GN with a 3.42 axle and the 200-4R trans ( which has a .66 overdrive ) with a chip change will probably run 140 mph . They are electronically limited to 118 from the factory , but change the prom and hang unto your A** Link to comment Share on other sites More sharing options...
Guest Posted January 26, 2001 Share Posted January 26, 2001 Im talkin about 160+ if possible with the 3.8L Link to comment Share on other sites More sharing options...
Guest Posted January 26, 2001 Share Posted January 26, 2001 Not to rain on your parade, but I'm not sure 160+ would be a good idea for a GN. I have heard that one of the reasons for the limiting for the speed was the fact that the G-body design just couldn't handle speeds over it very well. Meaning that handling and such went downhill at those speeds.It was just a limitation in that body design. I suppose if one added many mods to the body, that it could be made to handle such high speeds possibly. Link to comment Share on other sites More sharing options...
Guest Posted January 27, 2001 Share Posted January 27, 2001 So you want to go real fast in your GN. 160+ equates to 8 second quarter mile passes. If you are looking for that type of performance, I suggest you dig deep into that wallet and pay close attention to the GN websites. If you want to go 160+ out on the open highway, put in a set of highway gears (2:73 or lower), run tall tires (28" +), utilize an overdrive transmission, and make sure you have enough horsepower to get you there. Thats real fast if you've never been there before. There is a formula on the GSCA website that will give you all the specifics on what you need to do this. Whatever you do, be safe doing it. Link to comment Share on other sites More sharing options...
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