H-Beam vs. I-Beam Conrods: Which One’s Right for Your Build?

Breaking Down the Pros and Cons with Real-World Examples

If you’re planning a serious performance engine build, chances are you’ve come across the debate: H-Beam vs. I-Beam Conrods. Which one should you go for? What’s the difference? And most importantly—which one will stop your rods from making an unexpected exit through the side of your block?

First Things First – What’s the Difference?

H-Beam Conrods: The All-Rounder

• Typically come with 3/8" ARP bolts (upgradable to ARP L19 for high boost setups).
• Ideal for turbo builds up to around 800-1000hp, depending on the engine platform.
• Perfect for street-driven turbo setups where reliability matters.

I-Beam Conrods (Drag Pro Conrods): The Heavy Hitters

• Come standard with 7/16" ARP bolts for extra clamping force.
• Can be upgraded to ARP L19 bolts for extreme builds.
• Best for big-power drag cars, high-RPM NA builds, and serious turbo setups over 1000hp.

Which One’s Right for You?

Real-World Example – Built Barra vs. Full-Blown Drag Monster

Let’s say you’ve got a Ford Barra and you’re aiming for a solid 600-700hp street build. You’ll be running E85, moderate boost, and revving to around 7500RPM. H-Beams will do the job perfectly.

Now, if you’re turning that same Barra into a full-blown 1500hp drag monster with 50psi of boost, methanol fuel, and 9000RPM+, Drag Pro Conrods with ARP L19 bolts are what you need—because at that level, you’re asking a lot from your bottom end.

Final Verdict – H-Beam or Drag Pro I-Beam?

If you’re planning a big-power street car, go with H-Beams. If you’re building a serious drag or high-RPM engine, Drag Pro I-Beams are the way to go.

Either way, Spool Imports has got you sorted. Check out our full range of conrods here!