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Estimated top speed with th350?

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Old 05-23-2006, 10:48 PM
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Default Estimated top speed with th350?

I was wanting to know close to what my top speed would
be with a th350 and 3.73's ? Thanks
Old 05-23-2006, 11:08 PM
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Also depends on your rear tire and rev limit

Here's a good calculator to use. Keep in mind you will lose a couple mph from what this calculator says, due to the converter slippage

http://www.f-body.org/gears/
Old 05-24-2006, 09:39 AM
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Put your 4L60E in 3rd / D, and find out; same 1:1 ratio. Of
course finding the right road for this might be problematic.
Old 05-24-2006, 11:02 AM
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Originally Posted by jimmyblue
Put your 4L60E in 3rd / D, and find out; same 1:1 ratio. Of
course finding the right road for this might be problematic.
If your rev limit is 7000 rpms, just run it to 3500 rpms, note the speed and multiply by 2.
Old 05-24-2006, 02:33 PM
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You're no fun.

Some difference to be found in the converter slip, it
will tighten up more at the top end of the RPM range.
And no lockup on the TH350, though there is a TH350C
(but whether it's suitable for performance uses I couldn't
say)
Old 05-24-2006, 09:44 PM
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well when i put my car in 3rd/ D it is doing 95mph at like 5200 rpms.
i know if i get a th350 i should be able to go faster than 95 mph?
Old 05-24-2006, 09:58 PM
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if you want more top speed just get overdrive with it. It will cost more but you will be happy or get a 200r4 just be ready to spend more
Old 05-24-2006, 10:04 PM
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i found a th350 today that comes with trans. torque
converter, trans.cooler,dipstick tube,detent cable,fluid
for only $839.99 Also would i have to get one that has
a 9'' tailshaft?
Old 05-24-2006, 10:08 PM
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Originally Posted by 94 z28 A4
i found a th350 today that comes with trans. torque
converter, trans.cooler,dipstick tube,detent cable,fluid
for only $839.99 Also would i have to get one that has
a 9'' tailshaft?
You know for a price like that the trans and the converter are going to be budget "stock" type parts that won't take the heavy abuse we put these cars through. You really get what you pay for...

My .02
Old 05-24-2006, 10:28 PM
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HOw many ponies you have have a lot to do with it. My car with 3.23s does 135 in 3rd. Don't forget the turbo350 has a higher(numerically) first and second gear, I'd say you could still do about 130. with My old chevelle with a .40 over 350, 3.55s and a turbo350 I got clocked at 138mph. so its not out of the question.
Anything over the speed you hit at the dragstrip is useless anyways....
Old 05-24-2006, 10:50 PM
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Does that mean you can wind it out more in 1st and 2nd?
Old 05-25-2006, 11:50 AM
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what kind of power are you making to need a th350?
Old 05-25-2006, 12:42 PM
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Not always about big power to need a th350. Some people (myself included) like to know the tranny won't take a dump anytime soon. Now if he was wanting a th400/PG then I would probably ask the same thing you did
Old 05-25-2006, 10:38 PM
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Originally Posted by Strahley
Not always about big power to need a th350. Some people (myself included) like to know the tranny won't take a dump anytime soon. Now if he was wanting a th400/PG then I would probably ask the same thing you did
I am running a Rossler TH400 Terminator 2 with a JW ultrabell, T brake, RMVB and its behind a stock internal LT1 with 160k and bolt ons.
I have the manifold plumbed for a Direct Port and forged 383 plans so I am building for the future.

Knowing that at this moment that there is nothing my engine can do to hurt this tranny is comforting though.



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