What can I do to make my 84 Grand National faster?

[Justang]

Hey guys i just pick up a 84 gn hot air car would like to know what i could do to make it a little faster and what i have to do to put a intercooler in it. Also what is the basic mods to hop these cars up a little bit and where to find parts. Any info would be great thank.
Justin

 

[Boost231]

first and for most do a SEARCH. If you want us to help you, first list what has been done to the car already.

 

[Dstoltenberg]

Well a twin turbo'd big Block 455 would make it faster

 

[c n avoid87]

Well a twin turbo'd big Block 455 would make it faster

no it wont make it faster...it would make it FLY...

 

[ZNix]

If its an all orginal 84 GN. I would start with the 86/87 ECM/MAF swap and an 87 Coil Pack and with that, add a scanmaster or powerlogger. Boost guage, and knock guages are nice to have. Grab a fuel pressure regulator, adjustable wastegate actuator, and a hotwire kit with a new 340 Walbro Pump. Then go with a Cold Air intake, and new Comp 980 valve springs. These upgrades will wake up the car. If you want real speed, I would get ported intake, ported heads, 3" downpipe, TA-33C Turbo, Razor's Alky kit, Wideband O2 Sensor, and a Turbo Tweak chip to match all your parts. I think others will confirm this is a good set, I am not the most experienced but this Is what I see for the most popular upgrades..

 

[Boost231]

already giving advice i like it

 

[Justang]

If its an all orginal 84 GN. I would start with the 86/87 ECM/MAF swap and an 87 Coil Pack and with that, add a scanmaster or powerlogger. Boost guage, and knock guages are nice to have. Grab a fuel pressure regulator, adjustable wastegate actuator, and a hotwire kit with a new 340 Walbro Pump. Then go with a Cold Air intake, and new Comp 980 valve springs. These upgrades will wake up the car. If you want real speed, I would get ported intake, ported heads, 3" downpipe, TA-33C Turbo, Razor's Alky kit, Wideband O2 Sensor, and a Turbo Tweak chip to match all your parts. I think others will confirm this is a good set, I am not the most experienced but this Is what I see for the most popular upgrades..

Thanks bro I just find out the car already has the swap done 86/87 engine and computer.

 

[Justang]

first and for most do a SEARCH. If you want us to help you, first list what has been done to the car already.

It already has a 86/87 swap done to the car I just find out? I'm new to the grand national's this is my first one so if this thing has the swap and the exhaust looks stock and turbo does too. Where do I start, or should I say begin with mods, what would you do first, i want to get the car in the 12's

 

[Dstoltenberg]

It already has a 86/87 swap done to the car I just find out? I'm new to the grand national's this is my first one so if this thing has the swap and the exhaust looks stock and turbo does too. Where do I start, or should I say begin with mods, what would you do first, i want to get the car in the 12's

Those 86-87 engines are junk, sell it to me and put a SBC in it

 

[Dstoltenberg]

It already has a 86/87 swap done to the car I just find out? I'm new to the grand national's this is my first one so if this thing has the swap and the exhaust looks stock and turbo does too. Where do I start, or should I say begin with mods, what would you do first, i want to get the car in the 12's

Those 86-87 engines are junk, sell it to me and put a SBC in it :wink:

 

[Justang]

lol

 

[ZNix]

already giving advice i like it

Well, its basically your advice from my mouth . With some added in stuff..

 

[charlief1]

Posting in the right location is the first thing. I moved you to the HA section so you'll get the right kind of info. You posted in the "How to" section and it for "How I did it. Not trying to be mean.

 

[Jerryl]

It already has a 86/87 swap done to the car I just find out? . . . .

Posting in the right location is the first thing. I moved you to the HA section so you'll get the right kind of info. . . .

Move it again . . . . to the General/IC section.

 

[Jerryl]

Hey guys i just pick up a 84 gn hot air car would like to know what i could do to make it a little faster and what i have to do to put a intercooler in it. Also what is the basic mods to hop these cars up a little bit and where to find parts. Any info would be great thank.
Justin

You can always try to read the link in the stick to the recipes.
Let me ask the "first order of business" question; What is your "little faster" goal?

 

[Justang]

You can always try to read the link in the stick to the recipes.
Let me ask the "first order of business" question; What is your "little faster" goal?

I would like it to run low 12"s maybe high 11"s.

 

[Justang]

Posting in the right location is the first thing. I moved you to the HA section so you'll get the right kind of info. You posted in the "How to" section and it for "How I did it. Not trying to be mean.

Thanks for the move, don"t worry about being mean, my wife is worst, but It has the 86/87 conversion sorry for posting in the wrong spot first time on this forum.