904 low gear set
#1710767
12/14/14 11:09 PM
12/14/14 11:09 PM
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Joined: Feb 2008
Posts: 128 West Michigan
76318dart
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Posts: 128
West Michigan
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First I'll start with my combo: 340 4in crank Rhs indy heads 2.02/1.625 mild port work crower solid roller 624/627 104cl 258/262 11:1 pistons eldelbrock Victor intake pro systems holley 830cfm
904 tranny w/8in turbo action 5000stall 8 3/4 4.10 gears. 3250lb dart Well the best time I have so far at the track is 11.00 at 119. I was starting to think if I would benifit with getting rid of the low gear set or changing gears? BTW I run 27x10.5 hoosiers and I have a little bit of suspension work to do. I spin a litter and it bounces on the launch. SS springs. My 60ft is 1.52 and 1/8 mile is 6.99 @96.5 mph. Thanks
76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
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Re: 904 low gear set
[Re: dmking]
#1710769
12/14/14 11:42 PM
12/14/14 11:42 PM
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Joined: Feb 2008
Posts: 128 West Michigan
76318dart
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West Michigan
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Likes to pull the front tires off the ground and either while it's doing that it spins or when the front comes down and it bounces and then spins. I have a pinion snubbed and longer shocks in the back with 80/20 adjustable shocks in the front
76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
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Re: 904 low gear set
[Re: 440W8 Duster]
#1710773
12/15/14 12:48 AM
12/15/14 12:48 AM
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Joined: Feb 2008
Posts: 128 West Michigan
76318dart
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The front and back are both bouncing.The fronts are comp engineering 3 ways and the backs are mopar longer gas shocks. So about the low gear set you think it's hurting me overall?
76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
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Re: 904 low gear set
[Re: 76318dart]
#1710774
12/15/14 01:12 AM
12/15/14 01:12 AM
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Joined: Sep 2004
Posts: 1,499 San Antonio,TX
440W8 Duster
pro stock
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pro stock
Joined: Sep 2004
Posts: 1,499
San Antonio,TX
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When I ran SS/springs I ran the MP shocks for a Manual Trans and the same front shocks you have and no pinion snubber and best 60ft 1.32 1/8th 6.16 and 9.77@ 137. 727 standard gears 4.30 rear gear with a 29.5 tire.
70 Duster W8 motor. 1.29 60ft 5.79 1/8 at 120 mph glide with 1.80 gear @3170 lbs.
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Re: 904 low gear set
[Re: Locomotion]
#1710776
12/15/14 01:20 AM
12/15/14 01:20 AM
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Joined: Feb 2008
Posts: 128 West Michigan
76318dart
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OP
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West Michigan
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Okay thanks guys. Im gonna get some new shocks for the back for sure. I have some 373s all set up in another case with a spool. Might try those first. The car is 80% street btw.
76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
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Re: 904 low gear set
[Re: Locomotion]
#1710778
12/15/14 01:42 AM
12/15/14 01:42 AM
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Joined: Feb 2008
Posts: 128 West Michigan
76318dart
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OP
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Posts: 128
West Michigan
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Yeah I know in the tranny. I used to have a 318 in the car so I put the low gear set in the trans. I shift the car at 6500 and I go thru the traps at 6450.
76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
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Re: 904 low gear set
[Re: 76318dart]
#1710779
12/15/14 01:46 AM
12/15/14 01:46 AM
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Joined: Sep 2004
Posts: 1,499 San Antonio,TX
440W8 Duster
pro stock
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pro stock
Joined: Sep 2004
Posts: 1,499
San Antonio,TX
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Yes if you are shifting at 6500 you want about 6600-6700 at the finish line.
70 Duster W8 motor. 1.29 60ft 5.79 1/8 at 120 mph glide with 1.80 gear @3170 lbs.
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Re: 904 low gear set
[Re: 440W8 Duster]
#1710780
12/15/14 01:51 AM
12/15/14 01:51 AM
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Joined: Feb 2008
Posts: 128 West Michigan
76318dart
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OP
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So I'm gonna start with the shocks for sure. Then once I get the suspension figured out I'll probably go back to the standard 2.45 in the tranny.
76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
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Re: 904 low gear set
[Re: 440W8 Duster]
#1710781
12/15/14 02:33 AM
12/15/14 02:33 AM
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Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
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master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
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Low gear set is fine, all your numbers are right in line for the power you are making. You need less weight, or more power if you want consistent 10s. I have 4.125 stroke, and about the same weight, and I have no intention of giving up my low gear set, I'd rather adjust the final gear ratio to adjust the car.
I have 3.89's in the 9 inch, with 28 tall tires. Street driven.
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: 904 low gear set
[Re: MoparBilly]
#1710782
12/15/14 02:09 PM
12/15/14 02:09 PM
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Joined: Dec 2009
Posts: 20,640 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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I took the low gear set out of my car and it didn't make a bit of difference but my car is lighter.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon! 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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