HELP! L480e with MP241 swap. Need Transmission support

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mntman71

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400 small block 4L80E NP241 Holley fuel injected locked rear diff, disc break conversion, 35"s
Ok I officially did the L480e with NP241 tease.

I need a crossmember or transmission support. the old one does not fit and sits in front of the front output shaft.

I have tried a aftermarket 2wd and it still does not fit.

the transmission Is a 1995 l480e out of a suburban and the T case is our of a 1991 suburban. they are installed and In I just can't find or figure out what to do with the crossmember or support.
 

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Bextreme04

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mntman71 said:
Ok I officially did the L480e with NP241 tease.

I need a crossmember or transmission support. the old one does not fit and sits in front of the front output shaft.

I have tried a aftermarket 2wd and it still does not fit.

the transmission Is a 1995 l480e out of a suburban and the T case is our of a 1991 suburban. they are installed and In I just can't find or figure out what to do with the crossmember or support.
Click to expand...
You need an 85-up crossmember. You will also need to re-drill the crossmember holes in the frame to move the crossmember back the 1-2" that account for the longer 4l80 overall length. The 85-later crossmember will look like a "w". Since you are in Washington, I'd suggest hitting up one of the squarebody facebook groups like "PNW K5 and Squarebodies", Chad TheMan, or Mr. A's Chevy parts. The PNW squarebodies group is mostly in the seattle area but has members everywhere. Chad and Mr' A's are in the Vancouver and Sultan, Wa areas and are chevy scrap guys.
 
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Thanks I have been looking all over
 
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Mr A had one in sulton wa. Picked it up putting it I. Tomorrow
 
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mntman71

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Had to drill 4 holes. So far the thing is in. Just took drivelines the shop and am putting in new u joints.
 
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Pi
 
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Have the crossmember in.
 

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Bextreme04

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mntman71 said:
Have the crossmember in.
Click to expand...
Some people install them like that in order to “improve driveline angle”, but you should really have the spacers on the bolt and let the crossmember sit flush to the frame. The spacers are to let the bolts get properly torqued, not to set the crossmember off from the frame.
 
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I agree my exhaust is in the way. Until I can get the cash to move all my exhaust since I put tank in rear and Holley terminator max X. l480 np241 drivelines ……….. you get the idea. Seamed so easy now I’m sunk think It will be my casket if my wife has anything to say about it
 
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The "W" should have room for exhaust but if not the other crossmember with a spacer will give you enough room for exhaust.

Here's my 4L60E on a 2"x2" square tubing spacer, there is also a 1/4" spacer above the trans mount

You must be registered for see images attach
 
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400 small block 4L80E NP241 Holley fuel injected locked rear diff, disc break conversion, 35"s
Looks good I put a 1 inch solid spacer across both sides and put the gram dampers on top all seems to be working fine.
 
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