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Injuns

High Performance Injuns "TOP" Injuns. Tolerance Optimized Performance!

Every component in your Injun has a tolerance. That + or - number that sets up the clearances in the bearings, the piston to wall, etc.

The problem is that a connecting rod big end may be at the high side of the tolerance and the crankshaft may be at the low side. Both are in tolerance but when combined, you have way too much clearance and your bearing longevity and performance will suffer because of it. 

This same procedure is true for every component in the Injun from piston to wall clearance to valve spring pressure to ring end gaps. 

There's a tolerance, and then there's an Optimized Tolerance, the one that delivers maximum performance and long Injun life.

That's why we don't just "Blueprint" our Injuns, we utilize "Tolerance Optimized Performance" to match every component for the best possible outcome increasing Performance and Longevity.

It's the only way we build an Injun and every HPI build gets the same treatment from a stock rebuild to a class winning race Injun. 

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  • Race Short Block

    Race Short Block

    We can build you anything you want. We've been playing with Pontiacs for 48 years so put our experience to work for you. Obviously the price isn't free so call us and let's make a plan to build your Injun, your way, at your budget! IAII blocks. Billet...

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  • Race Injun

    Race Injun

    We can build you anything you want. We've been playing with Pontiacs for 48 years so put our experience to work for you. Obviously the price isn't free so call us and let's make a plan to build your Injun, your way, at your budget! IAII blocks. Billet...

    $0.00
    Add to Cart
  • 461 to 523 CI Street Sleeper Short Block

    461 to 523 CI Street Sleeper Short Block

    461 to 523 Cubic Inch Short Blocks Starting at only $7200! Our Street Sleeper Series Injuns and Short Blocks are designed to HIDE THE HP using FACTORY CAST IRON HEADS and feature select factory 400 block cores, (with no core charges) fully deburred and...

    $7,200.00
    Add to Cart