When Nissan switched to the 300 instead of the 280 it then had 200hp, the 83 280 only had about 175 or so, it was fast for it's time but was still beat by the 5.0's and SVO's of the same era.
The GN will not slow down as much at altitude as a N/A car because of the turbo, I think it will still do 14.3-14.5 in the 1/4.
A lot of people mistake Buick T-Types as grand nationals and report 15 second 1/4's but the real deal GN's are good for 14.0 or better @ sea level and the GNX's do low 13's.
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F4TE 351w block 393 stroker: Scat 3.85" crank, scat H beams, Probe SRS pistons, Proformed 750 DP holley, Vic jr intake, AFR 205's, Buddy Rawls hydraulic roller cam, Crane 1.6 Gold race rockers, Powerforce SFI balancer, centerforce steel flywheel. Kooks 1 3/4" headers, Spec stage III clutch, Dr. Gas 3" x-pipe, spintech pro streets, TKO-600, Moser 31 splines, Detroit Locker.
Just about back on the road... |