1,500 Horsepower ’91 Stang Mod Motor Fox Body Coupe Project Buildup

The previous iteration of this project, which produced some 1,000 rear wheel horsepower.

As you all well know, we love project builds as much as anyone, and so when we stumble upon a good one out there on the interwebs, we just can’t help but share it here on the digital pages of powerTV. This relatively new project that’s being documented on the Yellow Bullet forums is, of all things, a 1991 Mustang Fox Body Coupe. And after having already pulled down a ridiculous 1,000 rear wheel horses in its previous state, you have to wonder just how this car out there this next iteration can go.

The new combination is slated to consists of an MMR short block with a Teksid .20 over block, Manley 4240 Pro-Series Billet rods, a forged 5.0 stroker crank, coated Manley pistons, ARP head studs, and a host of other good fixing’s in the bottom end. The expected 1,500 horsepower bullet will utilize Ford GT supercar heads ported by MMR, along with stage “R” cams from MMR and Manley GT500 valve springs and retainers.

Rather interestingly, a prototype 4.6 Cobra R intake that Ford developed and then cut in half (presumably to keep it from ever being used) was found for a low price and welded back together for this project. An oval throttle body, BigStuff3 injection, a pair of Precision billet 6262 turbos and custom intercooler piping, and an AMS1000 boost controller create the brunt of the horsepower in this beast.

The already slick Fox has been torn apart to be fitted with a Wolfe Racecraft 10-point chromoly roll cage, all of the turbo piping, a Magnafuel fuel system, and a Rick’s Tank stainless fuel tank.

There are far too many updates just in the last handful of days for us to cover it all here, but click over to Yellow Bullet, bookmark the thread, and follow along with this cool build.


MMR Shortblock
Teksid Block .20 over
New 4340 Manley Pro-series Billet Rods w/ARP 2000 Rod bolts
New USA MADE FORGED 5.0 STROKER Crankshaft w/micro polished journals
New Coated Manley 2500hp pistons (10:1 compression)
ARP Mainstud kit
Total Seal file fit rings
Clevite Race series Rod and Main bearings
MMr side bolts
Felpro Extreme Duty Headgaskets
ARP Headstuds
Melling Billet Oil pump
ATI Harmonic balancer

Heads:
Ford GT supercar heads
MMR Stage 3 porting
MMR Stage “R” Turbo cams (bigger and badder than the Stage3)
+1mm Stainless steel valves
Manley GT500 / Ford GT Cylinder valve Springs and Titanium retainers

Other
AMS-1000 boost controller
Ford Prototype 4.6 Cobra R intake (short runners)
Huge Oval throttle body
Bosch 160 low impedance injectors or Moran 235 injectors
BigStuff3 DOHC system
Custom 1 3/4 turbo forward facing headers merged to 2.5″ collectors
Twin Precision Billet 6262’s Turbos which I might change to 6766’s
Custom intercooler and pipping
Magnafuel fuel system
Rick Stainless steel fuel tank
Wolfe chromoly 10 point roll cage

About the author

Andrew Wolf

Andrew has been involved in motorsports from a very young age. Over the years, he has photographed several major auto racing events, sports, news journalism, portraiture, and everything in between. After working with the Power Automedia staff for some time on a freelance basis, Andrew joined the team in 2010.
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