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Old 10-08-2024, 03:32 PM   #31
1320racer
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Default Re: Rear gear question

As I stated in post #5

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For optimum ET, If it was mine, it would have a converter that flashes to 5800, I?d be shifting at 7200 and gear it so it?s crossing the stripe at 7700. I would also get a 30? tire under it if you can not go wider.
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Old 10-08-2024, 05:13 PM   #32
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Default Re: Rear gear question

So...
Stupid me is going to throw this out there...

Peak torque is at 5300...
It makes plenty good torque for a 3.75" stroke...
If it falls to 6200 at the gear change I'm going to say you're leaving some power on the table...
I would think if you send dyno sheets to someone like Coan, they could dial you in...
May find you can tighten it a bit?

I think maybe play with the shift point...
As in higher... 7200? maybe more...
See where it slows down...

More gear would help, as would a 3 speed...
If it crosses 72+ it really doesn't matter if the motor doesn't self disassemble...
(don't know the parts or build)
I see things I might try if it were mine...

Depends on your budget really, converters/transmissions aren't cheap these days...

Any way just a few thoughts from a dumb ol' Texas boy...
Maybe some of this helps...
Maybe it don't...
As they say... "Your mileage may vary"
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Old 10-08-2024, 06:14 PM   #33
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Default Re: Rear gear question

Its a 440” LS with 4.125 stroke
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Old 10-08-2024, 06:55 PM   #34
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Default Re: Rear gear question

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Its a 440? LS with 4.125 stroke
Sorry... Thinking Chrysler...

So...Yeah, Think I'd experiment with shift point, doesn't cost anything, just time...
Still think more gear...
Converter...
There's stuff to try before springing for a trans...
Haven't tinkered with LS stuff...
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Old 10-08-2024, 07:09 PM   #35
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Default Re: Rear gear question

There?s no question, more gear, higher shift, maybe a converter but not before real data via a data logged but not a 3 speed trans.
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Old 10-09-2024, 10:11 AM   #36
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Old 10-09-2024, 10:42 AM   #37
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Default Re: Rear gear question

Stan, what part of the TRUTH and the FACTS don't you like?
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Old 10-09-2024, 11:11 AM   #38
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Default Re: Rear gear question

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Stan, what part of the TRUTH and the FACTS don't you like?

I am still waiting for you to post something other than a vague generalized statement.

I don't know you, but from reading some of your other posts here, this does seem to be the way you roll.

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Old 10-09-2024, 11:25 AM   #39
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Default Re: Rear gear question

and I'm still waiting for you to post photos and time slips of your car, rather than your theory and formulas.
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Old 10-09-2024, 12:07 PM   #40
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Default Re: Rear gear question

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and I'm still waiting for you to post photos and time slips of your car, rather than your theory and formulas.

In almost ever thread I have seen you post in, you have had a different opinion than everyone else posting. I will just let the readers of this thread decide which of us is shoveling s h i t.


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