the Turbo Regal, Ttype Regal, Grand national, GNX ... all the same car with the same engine just different levels of engine/driveline/suspension tune. This car died in 1987. the motor was given one last chance in 1989 in a special edition 3.8 turbo Trans am(I personally beleive it was to clear out the warehouse with the turbo 3.8'* and 200R4'*)
there was also a late 70'* turbo V8 trans am... that was a huge disapointment
anyways... I wanted to turbo my delta88 .... and I'm still considering it for the slightly worked
engine I should be building while trying to blow up my current one
but my "3" was built differently then the "C" and up 3800'*... however the basic design of the engine is similar enough
heres what I've been able to figure out so far
- unless you wanna have your trans custom rebuilt (I'm honestly thinking of having a trans sent to level10) stay around 250 hp... it'* the torque and the heat abuse that kills the trans and well the Hbody and the 3.8/3800 can produce alot.
- mounting the turbo is brutally easy... you don't need custom manifolds like a lot of other ppl, you just need a flange added to your existing Xover pipe and remove a flange on the rear manifold. then run the exhaust back into your existing pipe off the elbow of the turbo.
- heres where it gets sticky... fuel and timing ... fortunately there are several piggy backs on the market to help ... but this is where you're gonna make or break the motor. I recommend split second myself http://www.splitsec.com
(the boosted and N/A should check this stuff out)
- intercooler... so you've got a bigger trans cooler, oil cooler to keep your engine from killing itself... a/c condenser to stop from killing yourself... and now you gotta find space for a intercooler... the good news is ... you don't need a massive one... a stocker from a turbo/svo mustang or a Tbird should be plenty (they are actually one of the most effecient intercoolers for their size and good to almost 300hp)
so basically it'* not "hard" ... you just can't throw the turbo on and be all good...
now for my turbo suggestions
find these cars
- turbo MR2
- Turbo supra (3rd gen, not the last 4th gen)
these are CT26'* and good for around 300-340 hp
- turbo/SVO mustang
- Turbo T-bird
- 2.2/2.5 Dodge turbo
these are T3 (or T3 sized IHI'* depending on year) - these are good for about 275-300 hp
but there are several different trims depending on year/model this will affect top hp and spool speed.
the IHI'* and very few of the T3'* were water cooled and oil cooled
personally I would get a CT26 or an IHI from an auto Turbo bird
so yeah.. the biggest issues are trans abuse, tuning and internal strength other then the L67(lucky bastards).. on stock internals I wouldn't try going over 250-260 hp