North American Turbocoupe Organization

which turbo?
thundercoupe Offline
I had a good day today, I bought a intercooler of off 740 volvo, turbocharger of off xr4ti, and intercooler of off t-bird super coupe. I have a question which intercooler would be better ( I am thinking volvo intercooler would be better) and which turbo would be better 88 5speed tc or 87 auto xr4ti? the xr4ti turbo intake side lookes bigger than the ihi that I have on my turbo coupe?


88 turbo coupe
k&n filter $20
flowmaster cat back $220
boost controler $7
14.1 at 96mph
Maybe more mods later on

Pete D Offline
See the article "Can I Upgrade to a T-3" in the FAQs. I don't know which i/c is the best.
Either would be an improvement.

88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


I think the supercoupe is alittle better. think of what it was designed to flow for a 3.8L engine the volvo is only around the size of ours. As for the turbos the one of the 88 is an ihi good spool up time lower boost. T3 longer spool up ~21-22 psi boost.

Just as an example one of my Ihi's hits 18 psi by 3000 rpm

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