LSX 454 and a 6L90 in a 72 k5 blazer?
 

I am planning on doing a frame off resto of my 72 Blazer. I would like to run a mast motorsports LSX 454 fuel injected small block (700 hp) and a newer 6 speed tranny and put it into my k5. I already have a dana 60 front, 14 bolt rear 4.56 gears detroit locker in the rear, maybe an ARB in the front. I know the mast ecm will control the 6l90. I plan on running around 37" tires and want to be able to drive this thing anywhere. I plan on fully boxing the frame and building a cage tied to the frame. Just wondering what kind of power levels the 6 speed auto can handle. Also wondering if I can bolt my np205 t-case to it, or if I should get a different one. Any advice?

Re: LSX 454 and a 6L90 in a 72 k5 blazer?
 

Magnum 6 speed is rated to 700 lbfts, what is the torque of the LSX??

Re: LSX 454 and a 6L90 in a 72 k5 blazer?
 

seriously doubt your 205 will bolt up. that tranny is huge as well so be prepared for major cutting of the floor

Re: LSX 454 and a 6L90 in a 72 k5 blazer?
 

What is a Magnum 6?
611.2 foot pounds at about 5100rpm.

Re: LSX 454 and a 6L90 in a 72 k5 blazer?
 

Manual. For some reason all I saw was 6 speed in your original post.
Sounds like a cool build,, going to move that Blazer around with no problem.


Darren

Re: LSX 454 and a 6L90 in a 72 k5 blazer?
 

there are 4x4 late model trucks that have LSx (L92, LY6, etc) motors in them with that trans and 4wd. get the tail section of one of those trannies?

Re: LSX 454 and a 6L90 in a 72 k5 blazer?
 

The company listed below has a new NP205 case with deeper gears that will allow it to bolt to a late model 4L60e .... see if the 6L90e has the same tail shaft pattern.....
http://www.jbconversions.com/