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Author Topic: thinking of doing a motor swap.  (Read 15584 times)

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nightmare311

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thinking of doing a motor swap.
« on: September 21, 2011, 09:55:28 am »
A customer of mine owes me money.He want to trade me a 93 caddy with a 4.6l northstar in it for the money he owes.
is the northstar a good motor swap of a fiero? and if i do it,I'm gonna swap the dash out to.
« Last Edit: September 21, 2011, 09:58:02 am by nightmare311 »
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TopNotch

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Re: thinking of doing a motor swap.
« Reply #1 on: September 21, 2011, 10:53:10 am »
It's a complicated swap, but it's been done. You may find some info on Pennock's forum.
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oldone

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Re: thinking of doing a motor swap.
« Reply #2 on: September 21, 2011, 05:43:27 pm »
talk to raydar he probably can give you some whys or whynots.
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Fierofool

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Re: thinking of doing a motor swap.
« Reply #3 on: September 21, 2011, 06:34:57 pm »
One of the things about the Northstar after it's installed is that the front bank of plug are very difficult to change out because they're in the center of the valve covers.  I've heard tales of having to drop the rear of the cradle to tip the engine out from underneath the rear window ledge so they can access the plugs. 
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Raydar

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Re: thinking of doing a motor swap.
« Reply #4 on: September 21, 2011, 06:36:16 pm »
Thought I heard my name...  :D

The Northstar is one of the more complicated swaps that you can attempt. You need to know how to weld and fabricate.
The cradle will need to be extensively modified. (Like removing 2/3 of the cradle's front crossmember and moving it forward. And that's one of the *minor* things that needs doing.)
The Northstar PCM is pretty much not tuneable. One of the guys on Pennocks devised a tune that will allow the Northstar to run on a 7730 PCM, but the last I heard it still needed work.
Whodeanie (who has done numerous 3800SC swaps and has an LSx swap on the drawing board) won't even consider doing a Northstar swap. He won't do 4.9s either, but that's a whole 'nother story.
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nightmare311

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Re: thinking of doing a motor swap.
« Reply #5 on: September 21, 2011, 07:10:30 pm »
Quote from: Raydar on September 21, 2011, 06:36:16 pm
Thought I heard my name...  :D

The Northstar is one of the more complicated swaps that you can attempt. You need to know how to weld and fabricate.
The cradle will need to be extensively modified. (Like removing 2/3 of the cradle's front crossmember and moving it forward. And that's one of the *minor* things that needs doing.)
The Northstar PCM is pretty much not tuneable. One of the guys on Pennocks devised a tune that will allow the Northstar to run on a 7730 PCM, but the last I heard it still needed work.
Whodeanie (who has done numerous 3800SC swaps and has an LSx swap on the drawing board) won't even consider doing a Northstar swap. He won't do 4.9s either, but that's a whole 'nother story.

welding and fab is easy... I was thinking if i do it is to use the caddy dash,wiring,pcm,everything i think i would need from the caddy. I think that would be the easy way to go.. plus I hate the interior of my fiero so...
« Last Edit: September 21, 2011, 07:12:22 pm by nightmare311 »
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