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09-09-2010, 07:06 AM
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#1 |
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Registered User
Join Date: Sep 2005
Location: Bay City, MI
Posts: 128
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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?
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09-10-2010, 12:11 AM
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#2 |
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Senior Member
Join Date: Nov 2003
Location: Calgary Alberta
Posts: 1,936
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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??
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67- 72 Parts collecter |
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09-10-2010, 02:02 AM
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#3 |
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Senior Member
Join Date: Aug 2005
Location: OKC, OK
Posts: 2,365
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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
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Mike Redpath |
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09-10-2010, 07:22 AM
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#4 | |
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Registered User
Join Date: Sep 2005
Location: Bay City, MI
Posts: 128
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Re: LSX 454 and a 6L90 in a 72 k5 blazer?
Quote:
611.2 foot pounds at about 5100rpm. Last edited by Luba; 09-10-2010 at 07:23 AM. |
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09-10-2010, 09:56 AM
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#5 |
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Senior Member
Join Date: Nov 2003
Location: Calgary Alberta
Posts: 1,936
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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
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67- 72 Parts collecter |
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09-10-2010, 10:09 AM
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#6 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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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?
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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10-01-2010, 03:16 AM
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#7 |
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Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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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/ |
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