Tranny first gear combined with rear gear help

Hey LXguy,

i knew they were made by borg until tremec took over, just stating it for rbguy who thought it was ford stuff...my 340 will probably spin to about 6000 or so give or take a little...I wouldnt be changing the gear anytime soon since i just bought these 3.91's but sometime in the future i could forsee maybe even going up to 4.30's. Would a granny gear be good or bad for the track? i mean it obviously sounds like i wont be in first gear too long? or is it the other way around? Im down for whatever will make me go faster, since with that 5th gear overdrive i can still get good mileage....if granny gearing is good for speed, then i like it =)