well all the help is much appreciated yeah that precision intercooler is sounds good but i really want a front mount intercooler they look pretty cool, as for the big turbo ill probably try it out and see what results i get if not i might trade for a smaller one. Also im looking to buy the right cam for my set up trying to built a street car that can run high 10s without taking my a/c out. Also i looking for a dual 3 inch exhaust test pipe back, on the atr i figure it was a good deal cause my friend had his receipt for $1500
You MUST!!!!!! step your fuel system up BEFORE you bolt that 70mm turbo on!! Let me repeat myself.............You MUST install a good fuel system if you go to a 70mm turbo! At a minimum a good intank fuel pump and a hot wire kit, 65lb./hr injectors, Turbo Tweak chip (matched to the injectors), adjustable fuel pressure regulator, new fuel filter, visual inspection of fuel lines to verify no kinks, ect., (note: this is a 20+ year old car, and the fuel lines on EVERYONES cars need to be checked/replaced). Also, step up to ported iron heads, ported intake, 70mm throttle body, steel main caps or a girdle (my preference), forged pistons, K1 rods, and might as well use a forged crank, and a roller cam. Basically, a 70mm turbo is a HUGE step up from stock. It will also NEED a 3400rpm (min.) stall converter (such as an Art Carr 3600 9" non-lock-up.) and a trip to Dave Splett's shop (Trans Service in Lynnwood 425-774-4966) for a top of the line transmission rebuild. A good front mount intercooler or the Precision stock location unit, is also needed. I would suggest taking a ride in Dennis Hogan's brown T-Type and see what simple bolt-on parts will do for a Turbo Buick. THEN ask for a ride in his white T-Type and see what you are in for with a 70mm turbo.
(some advice: wear a pair of Depends*!!!!)
I have a question for you, though? Have you ever driven a 500hp car before? Have you taken a driving class? Have you ever run a low 11 second drag time? If you answered no to these questions, you BETTER sneak up on the power level of your car! This is NOT something to take for granted! PERIOD! It's a good way to participate in an emergency room visit (IF you are lucky!!). 500+ hp in nothing to take lightly! The new 'Vettes have traction control computers, so the inexperienced can drive them. With out that little box, most of the new Vettes would end up on a flatbed on the way to a junk yard (sorry Gene.......a "Wrecking Yard"!!
) (Gene and myself grew up in wrecking yards. Our Dad's owned them, and, at least MY Dad was always correcting people when they would say: "You own that JUNK YARD?"
Slowly step up your power levels so you don't get yourself in trouble. Best advice I can give you. I don't want to see another Turbo Buick on a flat bed going to a "wrecking yard". (I don't don't care if YOU end up in the morgue, but I hate to hear about a GN dying.
) (just kidding of course) Stay safe. On that note, also step your brakes up too. BEFORE you put 500hp under the hood. Accelerating is optional, stopping is manditory!! The brakes on a GN are HORRIBLE, and that is an understatement! Funny how everyone will always tell you what hot rod parts to buy, but never mention brakes. The first time you step on the brake pedal at 100+mph and the car keeps accelerating (it'll seem that way in this situation) you will be buying a BIG set of brakes IF you make it home. (and a new drivers seat cover
) OK, add to your list a COMPLETE suspension rebuild. Start at the front end. Lots of options, but even stock bushings will help, with KYB shocks, or better yet Bilsteins, or Koni's. Then aftermarket rear control arms and a good BIG rear sway bar. Add to that U-joints for your driveline and a NHRA safety loop, too.
It gets REAL expensive when you buy a 20 yr. old car that you plan on pumping 500+hp. through. Hope you have a good job, no, wait,..... a GREAT job.:biggrin: Good luck. Before you buy ANYTHING, ask on here FIRST!! We can save you TONS of money. Just between Gene, and myself you are talking about nearly 40 years of Turbo Buick experience. WE have bought ALL the wrong parts so you won't have to. There are also alot of other knowlegable folks on here, too.
