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366 Spring Chicken
Joined: May 2008
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Joined: Jul 2007
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From: NORTH JERSEY
How much did you pay those kids to tune yer truck? They do good work. Seriously though, how accurate is your speedo? I was comparing the mph to rpm as my truck is setup the same and it confirms they are running over 2k rpm at 65 mph.
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366 Spring Chicken
Joined: May 2008
Posts: 2,105
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As far as I know the speedo is correct. The police have a radar display board they set up and it is within a mile or two of dead on. On the 45 to 65 pulls I was doing I held it in second gear. I don't have the 3200 spring yet. I just have the high idle all the way out. It seems to pull to 3100 now but I do want those extra rpm's the spring would give me. I also have the stock converter so the engine powers right through it. It goes nice now and seems to go 0 to 60 in 8 flat. All the runs on the video were non brake boost starts. Just hit the gas from a idle. If I do boosted starts it just spins to much.
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366 Spring Chicken
Joined: May 2008
Posts: 2,105
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Lets just say I live where Corey Staples from Diesel fuel systems is from. CTD2001, I will see you at Winterport Drag during Diesel weekend I hope. If I don't have a tractor pull I will be there.
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Yah, I would check your Tach calibration maybe? I had the 3.07 with 727 on stock gov spring without high idle screw backed out and could hit 80 mph. I know I wasn't getting near 3000 RPM. But now with the 366, no high idle spring, Getrage and 3.07 I can hit over 90 mph in 4th... 
Thread Starter
366 Spring Chicken
Joined: May 2008
Posts: 2,105
Likes: 3
Yah, I would check your Tach calibration maybe? I had the 3.07 with 727 on stock gov spring without high idle screw backed out and could hit 80 mph. I know I wasn't getting near 3000 RPM. But now with the 366, no high idle spring, Getrage and 3.07 I can hit over 90 mph in 4th...
Why check tach. I could hit 77 or 78 before I turned out the high idle. The runs I was doing from 45 to 65 I was in 2nd gear. third I can now bury the 85 speedo. I have 2 89's and they both maxed out at the same speed. They were not fueling at 75 but would top out there. The max no load on a stock setting is 2950.
