Joe Mangiaracina built a radical 427 cubic inch Windstor for SP 1275 pumping out 682 horsepower and 622 lb-ft of torque. By virtue of the all aluminum Windsor engine, the car weighs in at a svelte 2,440 pounds.

Joe was kind enough to share the built up specs for the engine with us.

• RDI "Z-block" M-6010-Z351 aluminum racing block with 9.5” deck height. 4.125” bore.

• Callies 4.000” stroke forged crank. Lightened through the main journals and the rod journals.

• Rod journals are cut for Chevy rods as the have a smaller bore on the big end than Ford rods. Radiused and lightened (to match the rods) counterweights.

• Crower titanium rods. 6.3” long.

• Forged J&E aluminum pistons with floating pins.

• TFS-R Stage 3 CNC ported heads with Ferrea 2.125” intake valves and 1.625 exhaust valves. Porting done by Bennett Racing. All intake ports, exhaust ports, bowls and combustion chambers match. CNC ported.

• Edelbrock Air Under aluminum manifold ported to match the heads and converted to fuel injection.

• 1300 cfm throttle body.

• 45lb injectors.

• MSD 6AL ignition.

• Accel Distributor.

• MSD Crank trigger.

• ATI harmonic dampener.

• McLeod aluminum flywheel.

• McLeod twin disc clutch.

• Stewart water pump.

• Rollmaster timing set.

• Comp Cams solid roller camshaft.

• Crower roller lifters.

• Jesel aluminum Mohawk 1.7:1 intake and 1.7:1 exhaust rockers.

• Canton fabricated valve covers and oil pan.

• K&N Extreme air filter kit. 3” tall 14” diameter with filter cover. No turkey pan.

• Accel computer for fuel injection.

• All engine mapping done by Job Spetter from the Turbo People.

• Special Superformance headers for TRS-R heads. Superformance was making their first set of these for Dennis Olthof. I got the second set.

• Side pipes by Kooks. 4” diameter corkscrew, no mufflers. Full 4” diameter.

Wow! According to Joe, "It flies!"

Joe in SP 1275
Indigo Blue/White. Tremec TKO-600

RDI Z-block and TFS-R heads

Fuel injection and
trick sheet metal valve covers.

Jesel shaft mounted rocker.