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Old 08-23-2003, 10:20 AM
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Exclamation what transmissions fit 97 s10 4.3l v6?

HI, this is my first post.
I am building a project car using an engine from a '97 chevy s10 ss (4.3l v6, 262ci).
I am trying to find a manual transmission that will match up to this engine. I have searched through past posts and found that a t-5 transmission out of a firebird or camaro would work, but that was for a v8. Does this hold true for the 4.3l v6? I don't care what is comes from as long as it's a 4 or 5 speed. I know the 4.3l v6 went back as far as '83 or '86 in GM vehicles. Anybody know how I could find out what year ranges transmissions would fit this engine?
Thanks alot.

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Last edited by boylanta; 08-23-2003 at 10:32 AM.
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Old 08-23-2003, 05:00 PM
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The bell housing on your 4.3 is the same as the small block chevy engine, you may not know this, but your 4.3 is a small block chevy; it`s a 350 with 2 less cylinders, the bore and stroke are the same at 4.001 X 3.480, so if you add the formula, you get this:
4.001 X 4.001 X 0.7854 X 3.480 X 6 = 262.
for a 350, it would be the same only X 8 = 350
The T-5 out of the camaro and fire bird of the 80`s isn`t exactly the hot tip, these trannies are known to be weak, but if your not planning on doing any major mods to your 4.3 and don`t rev it to 5 grand and dump the clutch it`ll survive.
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Old 08-23-2003, 06:08 PM
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The factory used the NV3500 behind the 4.3. A good trans in my book. Offered in either close or wide ratio. A good 5th gear overdrive as well. Dan
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Old 08-23-2003, 08:25 PM
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Thanks for the replies.
I'll be on the lookout for the nv3500.
As far as the 4.3l goes, I was aware of the bore and stroke being the same but I didn't know about the bellhousing. I don't have the bellhousing. So no matter which tranny I go with I'll need the bellhousing. I just wasn't sure if the bellhousing would match up.
If that's the case, I could probably get away with a manual trans from a 350ci block, right? Maybe like a early to mid 80's camaro or something. Did the 305ci v8 share the same bellhousing as the 5.7l 350? What about the v6 camaro's? I think they were 60 degree blocks, unlike the 4.3 and 5.7 90 degree block. If so I don't think they would work.
Thanks again to both of you for the help.
Much appreciated.

Last edited by boylanta; 08-23-2003 at 10:11 PM.
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Old 08-24-2003, 01:13 AM
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I should have been more pacific when I said bell housings. the block also has what we call a bell housing, where the tranny bolts up to it, and that`s what I was referring to on my first post, the 4.3, all the small block and big block chevy`s all share the same bell housing pattern on the back of the block, so anything from the 50`s up will all fit them. as for the V6 jobs like the 2.8, they do not share the same pattern, they have a rather small odd looking pattern. any manual tranny GM used will bolt right up as will any automatic from the same family line.
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Old 08-24-2003, 05:56 PM
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Here is a web page that a friend and I made that kinda explains the differences in bellhousing bolt patterns.
http://www.bobnewhart.com/orangekitt...ellhousing.htm
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