Blwneb is that intercooled or not and how would a T5OD borgwarner 5 speed gearbox go also i was thinking 2.5 exhaust, extractors, mild cam, port n polish aswell what do you recon
No borg warner will live a long life behind 400+hp. Extractors are not used with turbos (unless its a windsor V8). You would really need 3" not 2.5" for your horsepower. Porting the head should make it easier to make your hp goals.
For the power range you want the starting point would be a 60-1 compressor on a T4.
To make that sort of power, low comp (approx 7.5:1) forgies, cam, head work, big turbo big boost, big injectors, big fuel pumps, aftermarket ecu, big cooler, defenitely an auto with at least a 3200rp, stall converter and at leat 3.45's in the diff
Same car............new lease on life
500+HP of 250 EFI Turbo............Coming Soon
Turbo's are not realy hard on transmissions.The driver usually is the fult in things there.Well my T5 held up well with atleast 450 h.p through it..No power shifting though. And why such a high stall if auto? Unless a real big turbo is fitted with way too big A.R ratio [A.R nothing to do with air ratio, it's turbo housing to turbine]Keep things sensable, not too over the top and you'll do fine! Turbo's build TORQUE as well as power so even 400h.p will feel as strong as..Windsor Turbo's don't generally run under 8 to 1 so I guess the 4 Ltr would be similar as combustion chambers should be well worked out on both..It's as much to do with ecu tunning than anything. Like retard as boost comes on etc as well as fuel.. Some coments posted above I must say sound "inmature" please read before posting!!!!
Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
Passengers, myocardial infarction material..
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