Re: Running a 2.10 1st gear.10
[Re: Sammy]
#2715755
11/14/19 03:20 PM
11/14/19 03:20 PM
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Joined: Jan 2012
Posts: 2,603 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,603
Stuttgart, Arkansas
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One would think that would make it easier to manage at the hit. Kinda like when you go to a 1.80 Powerglide from a 727, just not as drastic of a change.
2011 Drag Pak Challenger
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Re: Running a 2.10 1st gear.10
[Re: Cab_Burge]
#2715816
11/14/19 05:32 PM
11/14/19 05:32 PM
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Joined: Dec 2005
Posts: 11,408 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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That decision is a part of the whole combination. Radial or slick? Power adder and can power be controlled to manage the tire? How sophisticated is the suspension? Track prep anticipated?
An SLR that is too high or too low will make the car a PIA to get down the track. When you find the sweet spot, it makes that task a lot easier.
If the results don't match the theory, change the theory.
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Re: Running a 2.10 1st gear.10
[Re: CMcAllister]
#2715829
11/14/19 06:36 PM
11/14/19 06:36 PM
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Joined: Mar 2006
Posts: 9,791 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,791
MI, usa
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Want to go quick or bracket race/ no prep it? My bet is unless you chase converters it'll be quicker with the 2.48. Harder to hook, yes. Impossible? No. I've talked to the driver of the record setting NHRA B/S Camaro. 1st gear in the 3.xx range with the rear in the 5.50+ range. Granted way less power but a steep SLR on a 9" tire. Personally mine hooks on 10.5x31 with a 2.45/4.30. Don't know how much power it makes but its been 9.00/150@3350lbs (55%F/45%R). Its been a pretty successful index/bracket car. However of you already have a 2.10, try it. Doug
Last edited by dvw; 11/15/19 09:08 AM.
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Re: Running a 2.10 1st gear.10
[Re: Sammy]
#2715957
11/14/19 10:49 PM
11/14/19 10:49 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,055
Michigan
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Anyone run a 2.10 1st gear in any of there cars? My little smallblock makes 1002 hp and want to try a 2.10 1st gear in my Dart. 4.30 Pro gear. Just got a new NSX 8" Billet converter and thought it might be better than the stock 2.48 1st gear. Whats your thoughts? Car will be much more manageable and fun to drive with the 2.10 low. You don’t say how much it weighs. A friend struggled - better yet fought his car off the line making 1K + horsepower. Would wheel stand when it got hold of the track, ran 8.50’s. Tried 2nd gear launch and that helped a bunch and only lost about a tenth. Eventually tried a 2.20 low and that sun gear lasted 30 runs. After failing a second sun gear he stuck a PG in it. Says it was the best thing he ever did to the car.
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Re: Running a 2.10 1st gear.10
[Re: A727Tflite]
#2716009
11/15/19 08:22 AM
11/15/19 08:22 AM
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Joined: Dec 2012
Posts: 1,823 Wind Gap,Pa.
Sammy
OP
top fuel
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OP
top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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Anyone run a 2.10 1st gear in any of there cars? My little smallblock makes 1002 hp and want to try a 2.10 1st gear in my Dart. 4.30 Pro gear. Just got a new NSX 8" Billet converter and thought it might be better than the stock 2.48 1st gear. Whats your thoughts? Car will be much more manageable and fun to drive with the 2.10 low. You don’t say how much it weighs. A friend struggled - better yet fought his car off the line making 1K + horsepower. Would wheel stand when it got hold of the track, ran 8.50’s. Tried 2nd gear launch and that helped a bunch and only lost about a tenth. Eventually tried a 2.20 low and that sun gear lasted 30 runs. After failing a second sun gear he stuck a PG in it. Says it was the best thing he ever did to the car. The car weighs 3450lbs. I tried a 1.80 1st gear and lost .5 It was a dog. Not sure how much better a 2.10 would be over a 1.80. I'm sure a 2.48 would be perfect. But the new transmission came with a A1 2.10. I hate pulling transmissions so trying to do it right the 1st time.
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Re: Running a 2.10 1st gear.10
[Re: Sammy]
#2716077
11/15/19 12:03 PM
11/15/19 12:03 PM
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Joined: Mar 2011
Posts: 3,055 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,055
Michigan
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Anyone run a 2.10 1st gear in any of there cars? My little smallblock makes 1002 hp and want to try a 2.10 1st gear in my Dart. 4.30 Pro gear. Just got a new NSX 8" Billet converter and thought it might be better than the stock 2.48 1st gear. Whats your thoughts? Car will be much more manageable and fun to drive with the 2.10 low. You don’t say how much it weighs. A friend struggled - better yet fought his car off the line making 1K + horsepower. Would wheel stand when it got hold of the track, ran 8.50’s. Tried 2nd gear launch and that helped a bunch and only lost about a tenth. Eventually tried a 2.20 low and that sun gear lasted 30 runs. After failing a second sun gear he stuck a PG in it. Says it was the best thing he ever did to the car. The car weighs 3450lbs. I tried a 1.80 1st gear and lost .5 It was a dog. Not sure how much better a 2.10 would be over a 1.80. I'm sure a 2.48 would be perfect. But the new transmission came with a A1 2.10. I hate pulling transmissions so trying to do it right the 1st time. Shame on me for not asking before - why do you want to change from what you have. What issues are you having ?
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Re: Running a 2.10 1st gear.10
[Re: Sammy]
#2716114
11/15/19 02:35 PM
11/15/19 02:35 PM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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What brand and model tranny are you using? I'm surprised that your using a 8.0 inch converter with that much HP I know A1 pushes 7.0 inch converters a lot fto their customers but no one else does with that much power
Last edited by Cab_Burge; 11/15/19 02:37 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Running a 2.10 1st gear.10
[Re: A727Tflite]
#2716151
11/15/19 05:24 PM
11/15/19 05:24 PM
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Joined: Dec 2012
Posts: 1,823 Wind Gap,Pa.
Sammy
OP
top fuel
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OP
top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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Anyone run a 2.10 1st gear in any of there cars? My little smallblock makes 1002 hp and want to try a 2.10 1st gear in my Dart. 4.30 Pro gear. Just got a new NSX 8" Billet converter and thought it might be better than the stock 2.48 1st gear. Whats your thoughts? Car will be much more manageable and fun to drive with the 2.10 low. You don’t say how much it weighs. A friend struggled - better yet fought his car off the line making 1K + horsepower. Would wheel stand when it got hold of the track, ran 8.50’s. Tried 2nd gear launch and that helped a bunch and only lost about a tenth. Eventually tried a 2.20 low and that sun gear lasted 30 runs. After failing a second sun gear he stuck a PG in it. Says it was the best thing he ever did to the car. The car weighs 3450lbs. I tried a 1.80 1st gear and lost .5 It was a dog. Not sure how much better a 2.10 would be over a 1.80. I'm sure a 2.48 would be perfect. But the new transmission came with a A1 2.10. I hate pulling transmissions so trying to do it right the 1st time. Shame on me for not asking before - why do you want to change from what you have. What issues are you having ? Bought a Rossler Turbo 400 3 speed ProMod transmission and it came with a 2.10 1st gear. I tried a 1.80 years ago and it was just a turd. I'm sure a 2.10 isnt much better. 1/8th mile heads up racing is what I do primarily. I need as much 60 foot as possible to be competitive. Cab as you can see I bought a Turbo 400
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Re: Running a 2.10 1st gear.10
[Re: dthemi]
#2716176
11/15/19 06:33 PM
11/15/19 06:33 PM
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Joined: Dec 2012
Posts: 1,823 Wind Gap,Pa.
Sammy
OP
top fuel
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OP
top fuel
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
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I have a3 speed 400 with a 210 first in one of my cars, and I like it fine. I think it's faster having less space between 1st and 2nd. This car is sprayed, so whatever I lost from the 2.45 I make up with more spray. If I were spraying, I would keep it but I'm naturally aspirated small block. 5.40 in the 1/8th 1.18 60 foot. Dont want to lose any 60 foot. I'm sure I'd lose some 330 and 660 as well.
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Re: Running a 2.10 1st gear.10
[Re: Sammy]
#2716249
11/15/19 11:14 PM
11/15/19 11:14 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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Ran a 2.10 first behind the 99 Hemi on a 29.5x10.5 with a 5.00 gear. We run a 2.24 first and a 5.14 gear in the Vette on a 29.5x10.5 as well. They both make more power than you are The 99 required some finesse at the hit the SB in the Vette leave with it all in, plus 5-8 degrees at the hit. Good chassis, good shocks and good converter will all be your friend.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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