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Old 08-16-2006, 01:40 PM
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Default '84 Upgrade

How difficult (read: time and expense) would it be to upgrade an '84 GN to '87 specs in terms of the mechanics?
My problem is right now I have limited funding but I still would like to purchase a Grand National. Prices for the 1987s a little out of my price range right now (I am still making payments on my '05 GTO). I do not mind restoring or modifying a vehicle, just so long as it is drivable and I can have one in my garage again.
Thanks in advance.
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Old 08-17-2006, 08:30 AM
91rangerturbo 91rangerturbo is offline
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Default Re: '84 Upgrade

search and search people do it all the time. Just swap the 86-87 engine and wiring harness and all related items into your car.
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Old 08-17-2006, 09:53 AM
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Default Re: '84 Upgrade

It'll be as expensive as buying a nicer 87, IMHO (and a lot more work) unless you stumble across a REALLY good deal on a donor car.

Save your money and get what you really want (and not something that might end up being a money pit).

Do a search and you'll find numerous people doing the conversion and a break down of the costs ... we had a discussion recently for someone doing a show car and if I recall correctly we were in the 12-15K range (but I think he was starting with a V8 car)
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Old 08-17-2006, 10:50 AM
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Default Re: '84 Upgrade

I agree with Ken. Save your money and get an Intercooled GN, 86 or 87 model. They can be found and in descent shape. I see many for sale here and on other boards all the time, and I would love to have another one of them but finances just don't permit it right now.

Don't try to make a car something that it isn't. You will waste a lot of money and time and you won't be really happy in the end. I am talking from experience here.
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Old 08-19-2006, 11:44 AM
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Default Re: '84 Upgrade

Quote:
Originally Posted by 91rangerturbo
search and search people do it all the time. Just swap the 86-87 engine and wiring harness and all related items into your car.
ok why do you need to swap to the 86-7 harness? are there extra sensors in the 86-7 cars??
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Old 08-20-2006, 10:10 AM
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Default Re: '84 Upgrade

Actually, you just have to run one wire (the MAT) and add it to the ECM connector.

You will need to do either some pin swapping or buy an adapter to run the later ignition module.
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Old 08-20-2006, 10:24 AM
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Default Re: '84 Upgrade

Here's a thread that might help ...

http://www.gnttype.org/forums/showth...wap+parts+list

BTW, 1500 posts!

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Ken Mosher
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2015 BMW 328xi XDrive wagon
2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold)
2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold)
2014 Silverado LTZ Crew 4WD
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Old 08-20-2006, 11:30 AM
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Lightbulb Re: '84 Upgrade

This sounds like something for the FAQ area. It seems to be asked frequently.
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