Callie’s Ultra I-Beam Rods (BBC)

Details

Callie’s Ultra I-beam rod for BBC wrist pin to fit GT1R billet crankshafts.

$1,664.00

Details

.905 pin
BBC rod journal

Frequently Asked Questions About Callie’s Ultra I-Beam Rods (BBC)

What crankshaft are these connecting rods designed for?

These rods are engineered specifically to pair with the GT1R Billet Stroker Crankshaft. They feature a Big Block Chevy (BBC) big end bore to match the unique journals on that crankshaft.

Can I use these rods with a standard Nissan VR38 crankshaft?

No. The rod journal diameter on a standard VR38 crankshaft is different. These rods are strictly for use with the GT1R stroker crank that utilizes the larger, stronger BBC rod journals.

Why choose the Ultra I-Beam design for a GT-R build?

The Callies Ultra I-Beam design removes stress risers and offers incredible compressive strength. This makes them ideal for high-boost, high-torque stroker applications where bending forces are extreme.

What makes the BBC journal specification superior?

Using the BBC (Big Block Chevy) bearing sizing increases the surface area of the bearing. This improves load distribution and oil film stability, which is critical for reliability in 2000+ HP engines.

Do these rods come with fasteners?

Yes, Callies Ultra rods typically come equipped with high-tensile ARP rod bolts (often Custom Age 625+ or similar) to ensure the rod cap stays secured under immense RPM and inertial loads.