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Old 06-17-2003, 09:05 AM
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Unhappy t-10 vs Muncie 4spd

Hi all!

I'm not to familiar with stick trannies, but i have a basic understanding and an all important question.

I need a standard to fit behind a '86 - 92 4.3l v6, approx 300lb/ft
preferably a 5 spd but a 4 spd will do just as well. The problem is that i'm not familiar with what will fit behind this block as well as handle power. rear end will be either a 3.73 posi unit, or a
dana 44.

Any help at all would be appreciated as this is a pressing issue for me.

Thanx

perplexed

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Old 06-17-2003, 11:23 AM
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My understanding is that what will fit a SBChevy (i.e. 350) will fit the 4.3 liter v6 cause it is basically a 350 with 2 less cylinders. So I'd go with a 2nd gen Super t10(made after 1974) or a muncie m21/m22. They should handle the power well, but make sure you have a lower rear gear like that 3.73 because 1st gear on most 4spds was wide...
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Old 06-17-2003, 12:37 PM
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What about a 5-speed from a similar vehice?
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Old 06-17-2003, 01:05 PM
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That would definately also work, duh...
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Old 06-17-2003, 01:18 PM
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so you mean finding a 4.3l that already has a 5 spd behind it or get one from an existing tracker.

Ps. checking the ratios on the muncies and the m20 has a 2.52 1st, the m21 / m22 have 2.20.

If i got a hold of a m20 would the 3.73 rear still be ok off the line, or should i look at something like a 4.27 rear?

thanks for the help so far
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Old 06-17-2003, 01:30 PM
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and the t-10 to accomodate 325 ft/lbs uses a w or x ratio
with the first being 2.64.

I guess the next obvious would be how difficult is it to come up with a junkyard t-10, or m20.?

sorry to keep bugging everyone usually i give advice, not ask for it.

Thanks
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Old 06-17-2003, 04:25 PM
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An NV3500 was used behind the 4.3 in an S-10 from about 88' and up. An aluminum case, rail shifted 5-speed that could have had a "Close" or "Wide" ratio. They didn't shift all that bad either. A little shorter shift lever would help a bunch. For gear ratios and specs, go to New Ventures sight. Dan

http://www.newventuregear.com/transmissions.html
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Old 06-18-2003, 07:42 AM
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Thanks to everyone for their input i think i'll look for the original that came with the 4.3
if not it's time for a t-10, I like the ratios better than the m20.

Here's to hoping
Hollywooding :laugh: :skeptic:
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Old 06-18-2003, 07:43 AM
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or the nvg, just the aluminum case bothers me, that's all.
seems ok though. never heard much about cracked cases. ever. so we'll see.

thanks dan and everyone
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Old 06-18-2003, 04:57 PM
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Quote:
Originally posted by Hollywooding
Thanks to everyone for their input i think i'll look for the original that came with the 4.3
if not it's time for a t-10, I like the ratios better than the m20.
1980 & 81 Firebirds and Camaros with the 301 or 305 respectively and a 4 speed came equipped with an iron case T-10 with a 3.42 to 1 first gear and second was around a 2.64 to 1. Just in case that's more to your liking.
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Old 06-19-2003, 03:53 PM
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Ever think of a Saginaw 4-speed? They have four low gear ratios from 2.54 to 3.50. For ratios & ID info, go to:
www.dandltransmission.com/saginaw.html
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Old 06-21-2003, 07:23 AM
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The NV 3500 trans is an excellent gear box.

They are very smooth and very quiet. The design is decades ahead of anything made in Muncie or Sagniaw Michigan..haha.

The last 5spd car to come out of our shop used the NV, it was a L79 327, 375hp, in a '32 Ford Tudor Sedan. It can handle more than they rate it at. Which is typical for manual trans manufacturers.

Good luck.
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