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I purchased this car new Aug 12th 1987 , I can help with any ?'s about the car , no rust, no accidents , was built to be a 100 % street car , it was to fast to race at the track without major work , rollcage .ect ect . so I sold it . Mark

Yes Some non GN ,1987 turbo regals came with the rear deck lid spoiler Mark

no

WE4 cars have black bumpers

I dont how many were made , I would guess just a few hundred . I purchased one new in 1987 , same combo ,. black with blackout package and grey int. Mark

Blackout Trim ??

Gm stop making 1987 Black Turbo Regal T's with the blackout package (WO2 option) after Nov 1986 . give or take a month , there is a gm memo to about this . There are very few 1987 Turbo Regals , black on black with chrome bumpers . Mark

And the head gaskets SCRUB back and forth . :p:p Mark

Incorrect again , see your 1ST post and the first reply to the OP question . (Quote = Heads don't lift. :rolleyes: END Quote) You are wrong on both accounts , your heads do lift under boost as do every other stock 3.8 turbo buick v-6 . May be you should think before you post:eek:

Since you first posted stating that cyl heads do not lift , I will let you explain YOUR conclusions

This is incorrect Mark

Cyl heads DO lift under cyl presure even without detonation . Would not normally cause a blown head gasket , with normal cyl presures , but the heads lift , gaskets scrub , ect ect , More head bolts , stiffer/thicker cyl heads will keep head lifting to a min. Mark

That Part. At least as is relates to the OP cam sensor failure , I dont think I understood your post after rereading it Mark

This is a well written explanation for the uneducated Buick V-6 owners What happens if you move the cam sensor while the engine is running? Every two revs, the cam sensor info is checked. If the cam sensor signal is present, it updates and resyncs. If not there, a malf code is set and the...

Incorrect No soup for you :rolleyes:

If the cam sensor moves out of adjustment (more than alittle ) while engine is running the ignition timing will be way off , hence the big backfire . the cam sensor is referenced evey 2 engine revoloutions in relation to ignition timing , fuel puddling is not the cause of the backfire.

You are on the right trail , how would the crank sensor know when to start ignition sequence with just three windows .....hmmmmm Mark

WRONG backfire is not from fuel puddling , it is an ignition backfire , I will let you draw your own conclusions as to why the engine backfires when the cam sensor ring breaks and moves inside the cap Mark

A broken cam sensor ring will throw timing off , as it rotates out of postion it will cause a major backfire . Common issue with a roller cam motor. Not sure that is what cause the damage , will need to look at all the damage after full teardown. Mark

few more of the car itself