4+3 tailhousing question
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Race Director
Joined: Feb 2004
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4+3 tailhousing question
I am about to start a trans for a forum member (85 stalker)
Ron origionally had a 4+3 that was converted to a th-350 automatic. We are going to do the best 700 I know how to build, and swap it in. My question is:
Does the 4+3 uses the same tail housing as the 700? My gm book is buried in the attic, and I thought I would cheat and post here first. I presume that Ron re-used the stock 4+3 tail housing on his 350 conversion. This would assume that they are in fact, the same as a 700.
Ron origionally had a 4+3 that was converted to a th-350 automatic. We are going to do the best 700 I know how to build, and swap it in. My question is:
Does the 4+3 uses the same tail housing as the 700? My gm book is buried in the attic, and I thought I would cheat and post here first. I presume that Ron re-used the stock 4+3 tail housing on his 350 conversion. This would assume that they are in fact, the same as a 700.
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Joined: Sep 2000
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From: The Top of Utah
From what I can see, it isn't even close. The bushing for the slip yoke installs into the O.D. case. Group 4.317, in the automatic section, shows, "84-90 Y MD8.....8642314 1 48.50 Extension, W/Bshg.". The same group in the 4 speed section shows, "84-88 Y .......14091353 1 246.00 Retainer, RR Brg.". I am speculating from what I'm seeing that the "C" beam is attached to the O.D. case.
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Race Director
Joined: Sep 2000
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From: The Top of Utah
The easy way to install a TH350 in a C4, is to use the 700R4 tail shaft housing, with a space/adapter to allow the "C" beam to bolt up with no other modifications. If the original car had a 4+3, it has the D44 diff and the shorter "C" beam. Regardless of the (factory) trans, the front "c" beam mounting point doesn't move.
RACE ON!!!
RACE ON!!!
Thread Starter
Race Director
Joined: Feb 2004
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We are taking a car that was once a 4+3 and was converted to a turbo 350. The shop that did the conversion used the existing 350 pass car tailhousing and reworked the c beam to work with the non vette tailhousing.
Now we are converting the 350 to a factory style 700r4 install.
I thought it possible(when I first inquired) that the 4+3 and 700 had the same tailhousing when they left the factory. I now know they are completely different. Thanks for the info
Now we are converting the 350 to a factory style 700r4 install.
I thought it possible(when I first inquired) that the 4+3 and 700 had the same tailhousing when they left the factory. I now know they are completely different. Thanks for the info
