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when i ran my 340 last yr i had 28/10.5 slicks and 4.57 gears and would turn 62/6300 in the 1/8 mile so i think 4.30 would be better in your case jmop mike




I agree that the 4.30 is the best gear at the track, but they aren't great for street use. If the car is mostly a drag racer and only occasionly sees the street, than the 4.30 would be perfect. If it's mostly a street car that goes to the track once or twice a year use the 4.10 IMO.




I guess I should mention that I can tolerate losing some "street-ability" for a faster car. There is a group of tuner guys that I am friends with. I want to be able to inch them out at the track with an all motor combo. 12 flat is the fastest car in the group. I think i can reach that with the correct gear.


Ryan "Bigs" '73 Duster (BLKDUST) - Black, 100% factory sheet metal, flat hood, 346 cid, J Heads, and a bench seat. http://s268.photobucket.com/albums/jj1/bigsbigelow/ Best to date: 12.40 @ 109 mph