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Re: Am I OVER-GEARED
[Re: pittsburghracer]
#1028467
07/09/11 03:06 AM
07/09/11 03:06 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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The car will respond favorably to less gar ratio, as it will sit on the convertor longer. I'd try 4.10's.
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: Am I OVER-GEARED
[Re: MoparBilly]
#1028468
07/09/11 10:29 AM
07/09/11 10:29 AM
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Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
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 I believe in LOOSE converters, and I don't think yours is too loose. Epecially with a glide. If the motor is still pulling good hp at 6500 rpm, leave the gear. The place I would start would be less tire weight, same roll out, or less roll out with 4.30 or 4.10 gears. You haven't said if your 60 fts are consistant. Are you able to run several within .01? Until you get there, it is going to be tuff to improve the combo. The current 1.41 60 ft isn't far off the mark if at all, depending on rollout. What is the class that you run?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Am I OVER-GEARED
[Re: FIREGUY12]
#1028469
07/09/11 10:50 AM
07/09/11 10:50 AM
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Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
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Quote:
In a back half car the cars tend to twist even thou you may not see it. I run a front engine plate and a mid plate. The tranny is bolted down to the trans crossmember. So when the chaasis flexes the weakess point break. On a poweglide the stock cases are weak. I have the JW bell housing and tail shaft. Glides tend to crack right above the shifter arm as mine did. I should have not bolted the tail housing down and the tranny could have move with the chassis and not broke. I will upgrade to an aftermarket case to fix this problem.
If you have solid motor plates, do not mount the glide solid. The stock cases live behind much more power than you are currently putting out.
You have to provide room for the chassis flex. If you choose to support it, use some form of mount that has some give in it. Old shock biscuits work well. I put one on either side of the tailshaft mounting point so it can move a little up or down. You may want to go two on each side, with only a back half car. I have an extremely stiff chassis, don't need much. I use a total of four biscuits, with two mounting bolts in my custom mount. You might want to double that, to give the extra flex room and still give the tranny some support.
Looks like there is some room for improvement with some rear shock adjustments. Try hitting the tire a little harder before adding ballast. How loose is the front? Best place to start is as loose as you can get it, with as much front travel as is available, then reduce both a little at a time till you are happy with it.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Am I OVER-GEARED
[Re: gregsdart]
#1028470
07/09/11 12:29 PM
07/09/11 12:29 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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Quote:
I believe in LOOSE converters, and I don't think yours is too loose. Epecially with a glide.
To me a loose converter in his case seems counter productive. Why would you want to launch the car on the downward part of the torque curve? Seems to me you would want to take advantage of that torque on the launch to get the car moving then use the horsepower on the top end.
"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 conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Am I OVER-GEARED
[Re: Guitar Jones]
#1028472
07/09/11 01:10 PM
07/09/11 01:10 PM
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Joined: Jan 2003
Posts: 684
St. Charles, MO.
Slingshot383
mopar
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mopar
Joined: Jan 2003
Posts: 684
St. Charles, MO.
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It's time to update your cam, and get one matched to your combination. Get some 12" X 33" slicks and leave everything else alone. Too much tire to drag around.
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
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