Welcome to SPR Performance - a.k.a TBIParts

 

  • Build times are 6 to 8 weeks please understand that.

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  • No Refunds allowed.  We ask that you make sure you are confident in purchasing before you pay for our services.  Due to the nature of our business it is very difficult to suddenly get a request for a refund.

Build times are longer.  Our shop is current and on time, but the boring shop is considerably behind for many reasons.   Mostly health and hospitalizations.

We Specialize in:

  • Custom SBC (46mm) and BBC (54mm) TBI Builds

  • Stock SBC (42mm) and BBC (50mm) TBI builds with mild performance mods

  • Marine TBI unit builds

  • Carb to TBI Conversions

  • Custom TBI builds for 383 Strokers and other higher TBI horsepower setups

  • F.Y.I.  Typical rule of thumb with TBI is 1HP per cubic inch.  So, SBC TBI limits are 375-400HP with BBC TBI being around 450HP max.  

 

We are finally up and running with our "new" Pratt & Whitney Jig Bore machine.   We are now boring in house so we are able to get our build times down to a reasonable time-frame.  We apologize for those who have had to wait an extended period time due to issues that have honestly been completely out of our control.

THANK YOU SO MUCH FOR YOUR TRUST, PATIENCE, AND UNDERSTANDING!!!

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Custom Chips & Engine Build recommendations Harris Performance, INC.  

www.TBICHIPS.com  Please contact him via his website or email him at tbichips@hotmail.com 

I ONLY RECOMMEND CHIPS FROM HARRIS PERFORMANCE

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