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buickanddeere 12-05-2012 06:12:14 184.151.63.141 Report to Moderator	Somebody has hacked it up. The TH200R4 was the only transmission. More than stock boost will blow the intercooler hoses off , heavier units are required. The stock intercooler has a restrictive bend in the outlet that needs to be cutout and replaced. 5500rpms is lots. 450HP flywheel is the limit for the stock main caps if there is no detonation. Depends on air temp and fuel octane. I've seen days where 16psi would indicate detonation on the sensor. Other days 20psi is fine. The fuel pump , injectors, mass airflow sensor, turbo inlet pipe, turbo down pipe, cat removal, free flowing mufflers , a chip,hardener transmission stator stub, and a stretch intercooler, will put an otherwise stock GN easily into the low 12's. [Reply]   [No Email]
jddriver 12-05-2012 19:13:01 107.202.177.36 Report to Moderator	Re: BD Grand National in reply to buickanddeere, 12-05-2012 06:12:14   It actually has a 5 spd and they did a very nice job.The thing that has got me bugged is the engine is LOCKED up.I am thinking at least 4500 to go thru this one with any kind of performance parts.I think 400rwhp would be a more realistic figure?I want to be able to go to store n still run middle to high 12s ?It appears to have a weak spot in frame wher it set on ground. What do you think.10000 to restore the car [Reply]  [No Email]
buickanddeere 12-06-2012 07:26:45 184.151.61.248 Report to Moderator	Re: BD Grand National in reply to jddriver, 12-05-2012 19:13:01   What is under the hood? Did somebody transplant a Vette drive train in there? Turbo's work better with an automatic. The turbo can be spooled up by brake torquing the converter. The turbo rpms stat up during gear shifts. [Reply]  [No Email]
jddriver 12-06-2012 19:33:29 107.202.177.36 Report to Moderator	Re: BD Grand National in reply to buickanddeere, 12-06-2012 07:26:45   still has the v6 turbo but has an air to air also>I did not know they had that.Trans appears to be alum No rust on body nad 14in wheels?mOUSE NEST IN AIR CLEANER THE INTERIOR DOES NOT STINK U THINK THESE CARS are worth saving this one is all there except the auto It looks fast setting there with 4 flats ? [Reply]  [No Email]
buickanddeere 12-07-2012 06:45:42 184.151.61.33 Report to Moderator	Re: BD Grand National in reply to jddriver, 12-06-2012 19:33:29   All 86 and 87's had the air to air intercooler mounted between the rad and the water pump. Cool air from a scoop below the coolant rad. A small crank mounted fan moved some air through the intercooler. There is a modified factor intercooler that is "Stretched" lower/longer and has the improved outlet. Still have the factory chrome steel rims with the turbo6 design? Somebody went to a lot of work to swap in a clutch , a BOP pattern belhousing and a transmission that could handle the torque. A beefed up TH200R4 is faster and reliable. Needs the hardened stator support, larger servo pistons, larger 2nd gear band, front pump upgrade, pressure regulator valve upgrade, extra clutch packs and a few other tweaks. Will handle a 500+HP turbo as long as some knob doesn't rev the engine then yank the trans into gear. [Reply]  [No Email]
jddriver 12-07-2012 18:43:12 107.202.177.36 Report to Moderator	Re: BD Grand National in reply to buickanddeere, 12-07-2012 06:45:42   wheels are very dingy but it looks like a 6? in the middle ? Tires are comppletely rotten seats prob need recovered [Reply]  [No Email]