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S550 GT4 Build Thread Profile - S550 Mustangs

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Bill Pemberton

0ld Ford Automotive Racing Terror
8,424
8,349
Exp. Type
Time Attack
Exp. Level
20+ Years
Blair, Nebraska
Since we have a slew of new Stang Racers, you might go back and just highlight some of the big killer mods on this insane machine ( like the reason the tranny says automatic). It has been a labor of love and a work in progress , but a quick rundown on the build sheet could peak many a newcomers interest and at the very bottom you could redirect them to the Spartan Sexstang Story in all its scintillating glory! That story is a build thread to end all build threads!
 
Fred - have you dyno'd the car yet? Is it still de-tuned for IMSA?
It is still setup up for IMSA. I did remove the intake restrictor so it should be a little better than the homologated 450 HP (wheel). There is a Roush Yates calibration that adds just under 100HP. Requires the GT350 intake and air box.
 
741
1,075
TX
It is still setup up for IMSA. I did remove the intake restrictor so it should be a little better than the homologated 450 HP (wheel). There is a Roush Yates calibration that adds just under 100HP. Requires the GT350 intake and air box.

Wow! So the ROush Yates tune is somewhere in the 540-550 club? to the wheels? Not bad!
 

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