Mid 80's GNXs

[PxTx]

The GN had an 8.5" ring gear in the rear. If those TA's were 12 second cars out of tge box the wimpy 7.5 rears tgey had under them are probably no longer original in mosy of them. How fast were the GN, high 13 at best I thought.

[old5.0]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">The GN had an 8.5&quot; ring gear in the rear. If those TA's were 12 second cars out of tge box the wimpy 7.5 rears tgey had under them are probably no longer original in mosy of them. How fast were the GN, high 13 at best I thought. </div></div>

Stock cold air GN should go 13.70s. Knock off half a second for GNX/TTA. In ideal conditions with the right driver... yeah, I wouldn't be shocked to see a Trans Am crack 12.99.

[RichSchmidt]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">The GN had an 8.5&quot; ring gear in the rear. If those TA's were 12 second cars out of tge box the wimpy 7.5 rears tgey had under them are probably no longer original in mosy of them. How fast were the GN, high 13 at best I thought. </div></div>

Actually,the Pace cars as well as most GTA's and other 5.7L F cars got the Aussie B/W 9 bolt. Most got 3.27:1 gears,but the Pace car T/A got 3.54's. I swapped one of them into an old 82 Camaro street racer I built years ago. I ran a mild 400 small block on a 125 shot and it would yank the tires high and dry on 10&quot; wide bias ply street tires,and really hit hard when I put the slicks on it. I eventually blew up the 400 small block from running a 225 shot on a stock bottom end,and when I looked under the car while working on it I saw the rear control arm mount pushed up into the back seat footwell(no frame connectors) but guess what didn't blow up? The beat to crap 3.27 geared 9 bolt. [img]<<GRAEMLIN_URL>>/smile.gif[/img]