Hard tail dragster problem

Mike Hedger · 07-05-2007, 09:59 PM

I have been racing my HT dragster for about a year now and before the San Antonio nat. I decided to put a new set of tires on it. I had a 16.5X32.5 Hoosier on it but it was pretty strung at the finishline so I went to a 33X16.5 S Hoosier on it. (Farren at Hoosier put me on this tire) The tire I chose was designed for a HT car but this is where the problem started. The car has a 515" BBC in it that made 825 HP with a 1.80 low and 4.10 gear with an 8" ATI that stalls 5800 (the converter is directly out of my door car)

When you leave the car will wind up the tire and about 10-15 feet out it spins or skips the tires about one revolution. I talked to Farren and he told me to try lowering the tire pressure from 5.25 to 4.75 so I did and it got better, so I tried to go another .25 lb till the car started to handle bad and backed up a step. I am at 4.25 with a CSR gauge now. My problem is it has gotten better but never fixed. It will also do this off of the stop as well, I am wondering if I need to make a converter change etc. Let me know if anyone has any ideas. Thank you, Mike Hedger S/C Q/R 4600

07-05-2007, 09:59 PM	#1
Mike Hedger Junior Member Join Date: Jul 2007 Location: Kemah TX Posts: 93 Likes: 0 Liked 1 Time in 1 Post	Hard tail dragster problem I have been racing my HT dragster for about a year now and before the San Antonio nat. I decided to put a new set of tires on it. I had a 16.5X32.5 Hoosier on it but it was pretty strung at the finishline so I went to a 33X16.5 S Hoosier on it. (Farren at Hoosier put me on this tire) The tire I chose was designed for a HT car but this is where the problem started. The car has a 515" BBC in it that made 825 HP with a 1.80 low and 4.10 gear with an 8" ATI that stalls 5800 (the converter is directly out of my door car) When you leave the car will wind up the tire and about 10-15 feet out it spins or skips the tires about one revolution. I talked to Farren and he told me to try lowering the tire pressure from 5.25 to 4.75 so I did and it got better, so I tried to go another .25 lb till the car started to handle bad and backed up a step. I am at 4.25 with a CSR gauge now. My problem is it has gotten better but never fixed. It will also do this off of the stop as well, I am wondering if I need to make a converter change etc. Let me know if anyone has any ideas. Thank you, Mike Hedger S/C Q/R 4600