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Old 11-13-2006, 12:02 PM   #70
Critter
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Join Date: Aug 2006
Location: Bulverde, TX
Posts: 2,692
Re: Went to a Bigger Blazer

Quote:
Originally Posted by vtblazer View Post
How it happened or why it happened?

The 'how' was descending a fire-road and dropping into a small washout at the bottom.

The 'why' is a four part puzzle.
#1 - the front drive shaft was too long.
#2 - there was only one mount on the rear of the 203 and nothing on the 205
#3 - the shift rails in the 205 had been ground incorrectly which was allowing for cross ratio shifting between the front and rear axles.
#4 - the th-400 wasn't a 'K' series case, stock tranny from a 2wd.

Repairs made:
1) shortened the front shaft
2) fabbed up another mount to support the rear of the 205
3) already having the doubler out was a good thing, pulled it apart and sent the rails back to ORD for another set. (couldn't save the original ones)
4) a local th-400 guru built me a stout new tranny armed with the full knowledge of what the truck was going to be used for.
All tricked out for hard wheeling, including compression braking that would rival any standard tranny out there.

So the story is, take your pick...
Could of been any one issue by itself or all working together.
While we are on the subject, what are all the differences between a Th400 set up for 2wd and 4wd. Are the cases not the same?
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72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces)
72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts
2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver

Check it out www.lsdyno.com
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