6LE Designs
Member
- Joined
- Nov 23, 2011
- Messages
- 307
Hey everyone! My name is Mark DeLisle and I just bought my first GN off a board member here. FRIGGIN LOVE THE CAR. I've been in F-Bodies for 15 years straight, even own my own business 6LE Designs making parts for them.
However, I couldn't resist the allure of the 1987 Grand National. Car is t-topped and in great condition. I bought it from Macs69 on here in this thread...
http://www.turbobuick.com/forums/th...n-maryland-nice-car-9000.365779/#post-2917228
To my door car was just over $10K. Solid car, no rust, good mods, think I got a great deal ($10K GNs around here, Los Angeles, CA, tend to be garbage)...
SO, with the introduction over, here's my dilemma. I was original going to do other stuff first (GNX gauges, interior, etc...), HOWEVER, I want to go faster, lol. I'm used to 450-500rwhp LS1s so I need to bump this thing up...
Here's the mods it has...
"Paint is nice bcc paint job, about two years old.
All new GM weatherstrip, including t-top weatherstrip.
No rust in t-top area, underside of car is beautiful!
Interior isn't bad, could use some new door panels and seats recovered but everything is there and decent.
This is a T-top car.
Engine is as follows, has just a little over 100,000 miles on it,
new 42lb. injectors,
new LT1 mass air flow w/a MAF Translater,
Turbo Tweak chip, new GBodyparts aluminum radiator,
new aftermarket trans cooler,
new oil cooler lines,
new Optima battery,
new A/C compressor and drier it gets very cold.
New adjustable fuel pressure regulator,
Walbro fuel pump with the hot wire kit already installed to ensure the pump receives enough power.
Transmission has less than 3500 miles on it, was built by a transmission shop in Cincy that specializes in Grand National transmissions, shifts very firm and the converter was tightened up also.
New Hooker exhaust system from turbo down pipe back.
Has a Auburn Posi rear end.
All front suspension parts where replaced, upper and lower ball joints, drag link, tubular front A-arms,
Front and rear springs, Bilstein shocks all the way around...nothing was cheap going into the suspension.
Also includes Kirbans stainless downpipe, and hollow IROC front sway bar.
Brakes are new. Cross drilled and slotted rotors.
Rear has been upgraded with a new Auburn differential
Also includes fitted car cover, brand new Grand National logo floor mats.
http://youtu.be/_bhAL_7-REk"
So, I was thinking it was pretty much ready for a larger turbo. It appears to have stock manifolds...
I assume I would need, Bigger Turbo (TA49 maybe?), headers (recommendations that won't break the bank?), converter (to match to the turbo, trying to find out what it has already though), new chip.
I e-mailed Cal Hartline (he's a friend of a friend) and waiting to hear back. In the meantime, what would be the largest turbo I could go with on the STOCK motor (stock heads and bottom end)?
The car is actually a daily driver and I am NOT building a drag car. It is going to just be a boulevard cruiser I can enjoy on the weekends and that will not die in LA traffic during the week.
What type of power can I expect? A friend was saying that turbo would get me low 11s in the 450 range but I don't understand how since everything I've read says the turbo is only good for like 25hp over stock... Hence why I need a little sage advice to get the ball (bearings, lol) rolling...
Thanks!
However, I couldn't resist the allure of the 1987 Grand National. Car is t-topped and in great condition. I bought it from Macs69 on here in this thread...
http://www.turbobuick.com/forums/th...n-maryland-nice-car-9000.365779/#post-2917228
To my door car was just over $10K. Solid car, no rust, good mods, think I got a great deal ($10K GNs around here, Los Angeles, CA, tend to be garbage)...
SO, with the introduction over, here's my dilemma. I was original going to do other stuff first (GNX gauges, interior, etc...), HOWEVER, I want to go faster, lol. I'm used to 450-500rwhp LS1s so I need to bump this thing up...
Here's the mods it has...
"Paint is nice bcc paint job, about two years old.
All new GM weatherstrip, including t-top weatherstrip.
No rust in t-top area, underside of car is beautiful!
Interior isn't bad, could use some new door panels and seats recovered but everything is there and decent.
This is a T-top car.
Engine is as follows, has just a little over 100,000 miles on it,
new 42lb. injectors,
new LT1 mass air flow w/a MAF Translater,
Turbo Tweak chip, new GBodyparts aluminum radiator,
new aftermarket trans cooler,
new oil cooler lines,
new Optima battery,
new A/C compressor and drier it gets very cold.
New adjustable fuel pressure regulator,
Walbro fuel pump with the hot wire kit already installed to ensure the pump receives enough power.
Transmission has less than 3500 miles on it, was built by a transmission shop in Cincy that specializes in Grand National transmissions, shifts very firm and the converter was tightened up also.
New Hooker exhaust system from turbo down pipe back.
Has a Auburn Posi rear end.
All front suspension parts where replaced, upper and lower ball joints, drag link, tubular front A-arms,
Front and rear springs, Bilstein shocks all the way around...nothing was cheap going into the suspension.
Also includes Kirbans stainless downpipe, and hollow IROC front sway bar.
Brakes are new. Cross drilled and slotted rotors.
Rear has been upgraded with a new Auburn differential
Also includes fitted car cover, brand new Grand National logo floor mats.
http://youtu.be/_bhAL_7-REk"
So, I was thinking it was pretty much ready for a larger turbo. It appears to have stock manifolds...
I assume I would need, Bigger Turbo (TA49 maybe?), headers (recommendations that won't break the bank?), converter (to match to the turbo, trying to find out what it has already though), new chip.
I e-mailed Cal Hartline (he's a friend of a friend) and waiting to hear back. In the meantime, what would be the largest turbo I could go with on the STOCK motor (stock heads and bottom end)?
The car is actually a daily driver and I am NOT building a drag car. It is going to just be a boulevard cruiser I can enjoy on the weekends and that will not die in LA traffic during the week.
What type of power can I expect? A friend was saying that turbo would get me low 11s in the 450 range but I don't understand how since everything I've read says the turbo is only good for like 25hp over stock... Hence why I need a little sage advice to get the ball (bearings, lol) rolling...
Thanks!