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08-01-2010, 08:55 PM #1
Gearing question for the solid roller guys
For those of you running a solid roller setup with a high revving cam (4700-8000 power band), TH400, and running a larger shot (250, 300+) what gear do you use? Currently have 3.70s in my FAB9 with a 5,200 stall. I'm debating switching to 4.11s..thinking 4.30s will be too steep for the spray.
Thanks
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08-02-2010, 02:25 AM #2
What RPM are you going through the traps at now with the 3.70's ???
I have the 4.10's with a 4600 stall, and hitting 7100 at the traps, but I'm considering 3.90's when I add my 2'nd stage... I have other Buddy's that stepped back to the 3.70's...
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08-02-2010, 06:51 PM #3
I'm going to making my first passes with this setup over the next couple of weeks. I'm not changing anything until I see what I trap at. The rev limiter is set at 8k and I'll be shifting roughly 75-7600. 28 inch tire as well.
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08-02-2010, 06:55 PM #4
Also, what trans do you have? TH400, glide,etc?
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08-03-2010, 02:42 AM #5
I'm still running the 4l60e, built up.. I don't have the manual valve body, so I program the the shift points.
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08-03-2010, 09:24 AM #6
What size tire are you running...28"?
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08-04-2010, 02:47 AM #7
Yep, M/T DR's ... 28" ( 275/60-15 )
I believe that's the tallest tire you will fit. Moser 12 bolt, with the LCA relocation brackets, extreme duty torque arm, anti-roll bar...
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08-04-2010, 11:08 AM #8
I currently have 325/50/15s but might switch to 315/60/15s if I change gears
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08-04-2010, 12:49 PM #9
Here's a handy link for tire sizes.
http://www.dakota-truck.net/TIRECALC/tirecalc.html
The 315/60-15 looks to be a 30'' tire... I'd say, to tall.
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08-04-2010, 04:48 PM #10
You're gonna need to stay with the 3.70's... guess you got it tuned?
GM EFI Tuner
2002 Trans Am WS6 - 9.41@143mph, #3675, on pump gas and drag radials - sold
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08-04-2010, 05:01 PM #11
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08-05-2010, 12:06 PM #12
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