Shelby GT35R C

[Para81]

Anyone know if there are any engine differences between the production vehicle and the competition version racing at IMSA?

 

[KWClutch]

It has a restrictor but I think that's it.

 

[GTSpartan]

The wet sump oiling system is replaced with a race spec dry system. I think the ECU is different too.

It is also assembled by Roush Yates Racing, not on Ford's niche line. There are most likely some other small internal component differences (bearings and such).

The IMSA rules package for the car will give you the full list of allowable deviations from OEM.

 

[GT Premi]

And it's no doubt running forged internals. The rules do allow for forged parts from the OEMs or approved manufacturers.