32 valve Northstar
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Senior User
Joined: Oct 2010
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32 valve Northstar
Is it possible to swap these motors in our trucks? My local j-yard has a whole row of them. Is it a smart swap? Is it worth it when it comes to fuel vs. power vs. cost of parts? Thanks guys.
Senior User
Joined: Aug 2010
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From: Residing in the shwa. On.
Anything is possible and those motors with the right build can put out an unbelievable amount of HP but why??? Don't be offended I would love one of those engines but not in a dent... But that's just me
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Joined: Mar 2011
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from what i know they were/are put in primarily G.M. vehicles that are front wheel drive. i think finding a tranny to fit the application might be tough. these motors have some power but from what i understand are horribly for gas mileage,and that is in a sedan not a half to three quarter ton truck
thats all the input i got
thats all the input i got
Senior User
Joined: Aug 2010
Posts: 158
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From: Duluth, MN
Do it! Be different... Like dentside250 said the hardest part would be finding a rear wheel drive transmission for it. The second biggest headache you would run into is the wiring harness if it isn't available. Both of these issues are easily overcome and would be really cool if you accomplished this.
On Wiki it says that the LH2 Northstar was made for rear wheel drive vehicles, I don't know much more than this though. The LH2 was only made from 04 to 09 though. The question I ask is could you retrofit an older style L37 and LD8 Northstar to work with the LH2 transmission.
On Wiki it says that the LH2 Northstar was made for rear wheel drive vehicles, I don't know much more than this though. The LH2 was only made from 04 to 09 though. The question I ask is could you retrofit an older style L37 and LD8 Northstar to work with the LH2 transmission.
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Joined: Feb 2010
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From: Thief River Falls, MN
From what I remember, they have a unique bellhousing bolt pattern that only fits the FWD transmission, as well as accessory issues. Check out the GM swap boards for more info. I ran across the information while looking for information on the 4.7. If you're looking to swap in a GM, my money is on any of the LS series engines (vortec 4700, 5300, LS1, LS6, etc etc) which have a huge aftermarket and are pretty solid engines (for a GM), and are a smaller package than the 4.6/5.4, which is why I was looking into it.
Lead Driver
Joined: Mar 2010
Posts: 5,250
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From: West Virginia
yeah wiring, mounts, accessories, and transmission would be a pain in the *** to take care of. Youd have as much in it as a ls series engine, and the LS weigh less and have way more support.
Personally I'd rather see a ford motor in there, but to each their own.
Personally I'd rather see a ford motor in there, but to each their own.
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Posting Guru
Joined: Dec 2010
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From: Chino Hills
While there are a couple of conversion for them. They are not up to service in a truck unless you just wanna drive around with a couple of beach cruisers in back. Or mild home depot runs.
You can get them to hook up to a V6 60 degree T700R4 easy enough. You will likely need to have 4.11 gears with 27 inch tall tires so it can have enough rpm to move the truck.
They are good motors I just don't see it being worth while becouse of the cost, and lack of real aftermarket like the 4.6 Ford.
You can get them to hook up to a V6 60 degree T700R4 easy enough. You will likely need to have 4.11 gears with 27 inch tall tires so it can have enough rpm to move the truck.
They are good motors I just don't see it being worth while becouse of the cost, and lack of real aftermarket like the 4.6 Ford.
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Cargo Master
Joined: Jul 2010
Posts: 2,099
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From: York, Pa
Those Northstar motors are head gasket blowers. I wouldnt waste my time. I have a DOHC 4.6 Teksid motor in my cobra and its a blast to drive especially supercharged w/ 4.30 gears. However I would never recommend it for a truck. They are too high strung and not enough low end torque. Neither the DOHC GM or Ford are truck motors.
Posting Guru
Joined: Oct 2010
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From: townsend DE
oh also, teksid have 4 bolt mains with one cross bolt per side totaling 6 not 8
the iron blocks and romeo blocks also use the cross bolt but only one 2 mains
Tuned
Joined: Jan 2009
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From: Decatur, AL