Page #2
My one off turbo shield.
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http://www.turbobuick.com/forums/fa...n/305748-my-custom-aluminun-turbo-shield.html
I have the same gears too and I'm told I should go back to stock gears.
What gear are you leaving it in is it 3rd or OD ? My engine still has the stock cam and heads in fact the engine is completely stock minus mods other than the engine. Do they make a drag a radial that tall?
My one piece rear bumper fillers, and smoothed steel bumpers
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See post #8
http://www.turbobuick.com/forums/sh...air/299465-bumper-fillers-abs-fiberglass.html
How do you fit a big tire under a lowered car, without notching the frame? Also, make it ride nice, handle good, and do 1.39 60' times?
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The stance.
My car has 1" lower, Eibach springs at all four corners. Stock size wheels and tires up front. Back wheels are 8" wide with a 4 1/8" Back space. Covered with a (28" tall) 275/60/15 MT DR. This 28" tall tire brings the rear of the car back up to stock height with a big tire tucked inside. Also, gives the car a very slight rake.
Most people who try this combo have rubbing issues (with their tires
). I did at first. Found out that my differential was offset to one side about half an inch from the factory. This is very common. The fix was to get Metco billet adjustable upper control arms to center the rear end under the car. This also allows you to set your pinion angle. I'll have to check my notes, but I think I've got mine set to about three degrees down. My lower control arms are from HR. I did have to grind about 1/8" off the inside of my fender lips, so as not to rub when I have a car full of people and hit a big bump. Left air bag has 10 psi. Right has 12. Bilstein shocks at all four corners. For track duty, I install cheap Comp 90/10 shocks up front, and loose the sway bar. Drag radials are run at 21 psi for street and track. This thing does 1.4x- 1.5x short times all day long on a good track. Here's it's best at Fontana last year. This was leaving off the trans brake at 20 psi.
1.39 short time.
spoolfool at Fontana - YouTube
One thing that I've done that's a bit out of the box, is that I run a 3.73 gear out back. Most gurus will say that I'm throwing away lots of performance and gas milage by doing this. On most other cars, I would agree. However, With my 28" tall tire out back, this makes the final gear ratio only about 10% lower than stock. This lower gear also alows me to run a tighter converter (2800 @ 0 boost) and still spool the turbo just fine. I run an older Art Carr 9" non lock up billet converter. I tryed one of his newer converters and wasn't very impressed. If i have to replace it, I'll probably get one of Dusty's. I leave off the trans brake with 4200 rpms @ 15 lbs of boost. slippage is only 5% at the big end. Engine is at 2300 rpms cruising at 70 mph. It gets 21 mpg. After some dyno pulls with Cal Hartline yesterday, we took it out for a cruise. Cal's comment was that "It drove just like a stocker." (other than the 500 HP at the wheels on pump gas and alky).
Happy spooling.
Mike Barnard
