Scott Long
140+ mph club
- Joined
- Aug 7, 2001
I want a GN bad. I seem to be seeing the hot air cars cheaper than the more popular 87 intercooled cars and the 86 intercooled cars. I'm not new to this board but I'm new to tech info on GN's. Yes I know a little about them and can hold a conversation, but I would like to know more before I make my decision on buying an early or late model. I like the 84-85 wheels better (stock for stock, although weld pro-stars w/ 26x10.50/15 E/T Streets would be one of my first mods) and the interiors from 85+ but the 84 is feasible too, just don't like the seats as much as the 85+ and I'd prefer not to get a t-top car.
My question is this: If I got an 85 could I install a front mount IC, route the turbo to flow air into the ic and then into the intake manifold and therefore be able to run more boost w/o alky. I don't know how much boost they run stock does anyone know. I'm thinking 15 psi w/ an intercooler and anything higher I'd use 110 octane or alky.
86 and 87 are similar, but what gave the 87 more hp and torque, was it just tuned different or did it have a different cam or turbo?
What stock turbo does the hot air car use? What about the late model GN's?
Are the hot air and intercooled blocks the same? Therefore if I found a set of exhaust manifolds, turbo, ic, and intake and piping could I install it on an 85 long block with no problems?
Do they all use the same trans? Is it a 200R4, 700R4, or something else?
Was posi an option on earlier grand nationals?
Last but not least, when swapping in an 87 intercooled drivetrain into an 85 is it straitforward or is it very tricky? Wiring harness and computer need to be changed?
Oh yeah almost forgot. I've seen low 14 and high 13 second times posted from stock 87's. What do 86's run average stock, and what do the hot airs run 1/4 mile stock?
My question is this: If I got an 85 could I install a front mount IC, route the turbo to flow air into the ic and then into the intake manifold and therefore be able to run more boost w/o alky. I don't know how much boost they run stock does anyone know. I'm thinking 15 psi w/ an intercooler and anything higher I'd use 110 octane or alky.
86 and 87 are similar, but what gave the 87 more hp and torque, was it just tuned different or did it have a different cam or turbo?
What stock turbo does the hot air car use? What about the late model GN's?
Are the hot air and intercooled blocks the same? Therefore if I found a set of exhaust manifolds, turbo, ic, and intake and piping could I install it on an 85 long block with no problems?
Do they all use the same trans? Is it a 200R4, 700R4, or something else?
Was posi an option on earlier grand nationals?
Last but not least, when swapping in an 87 intercooled drivetrain into an 85 is it straitforward or is it very tricky? Wiring harness and computer need to be changed?
Oh yeah almost forgot. I've seen low 14 and high 13 second times posted from stock 87's. What do 86's run average stock, and what do the hot airs run 1/4 mile stock?