R&D Custom Engine Builds

6.9 or 7.3 IDI Custom Engines

Don't settle for stock, go for the best.


R&D IDI Performance can rebuild your 6.9, 7.3, or 7.3T from stock to a full on build using high perfomance R&D goodies available on the site.

All R&D IDI Perfomance Engines include ARP head studs, Comp 910 valve springs, full dynamic rotating assembly balance, conventional 2nd compression ring gap, and a full connecting rod resize and rebush. All blocks are sleeved on all 8 cylinders, and Only the highest quality components are utilized in the rebuild.

Pricing and Extras:

The base price for an R&D engine is $5500.00 plus core.


The base engine is what is considered an "Enhanced Long block" and does not include an injection pump, injectors, turbo or turbo kit. The customer must supply a working injection pump and injectors, or source R&D units if they want the engine delivered "Turn Key" with injection timing set during the test run.

Additional upgrades (i.e. Camshafts, Injectors, Pumps, Turbo Kits, etc.) can be added to the build in addition to base pricing with a 10% discount off retail pricing per part purchased.

Sign up for a custom built engine here:

Fill out some contact information, and we will get back to you as soon as possible to help yu realize your IDI dreams.