We sell some of the best late model GM racing heads on the market.  We only sell them with stage III ports with part selection choices per a customers request.

We are a GEN III and IV LS7, LS3, L92, LS2, LS6 and LS1 high performance valve train specialist.  Our LS7 racing dual springs have lift from .680 to .700 depending on application.  Upgrade racing spring kits for all applications are available to .650 lift.  All of our springs use the finest super clean wire and are electro-polished, shot-peened and stress relieved for increased endurance.  The new Comp Cams slogan for their 921 spring is "beyond the beehive".  Our springs are "beyond the 921 and Nextec".  We have the finest upgrade spring kits on the market.

RLD Performance is also a supplier for GMPP Performance Parts, Dart blocks, World blocks, AFR, RHS, Manley, Ferrea, SI, Pioneer, Competition Cams, Crower, Callies, Mahle Motorsports, JE/SRP,  Wiseco Pistons, Fluidamper, Stef's Performance, BLP Products, Yella Terra, FAST, ZEX and Powerhouse Tools.  Their web sites are linked on our "Contact Us" page for research purposes. Pioneer alone supplies so many quality product lines that it would be unreasonable to try to list their products.  RLD Performance is an automotive engineering business and does not warehouse parts like a mail order warehouse. However, your needs can be properly discussed and hard parts are sold competitively. Parts are sold at Jobber or less like mail order, depending on the manufacturer.  However, there will be a lead time to supply the parts. 

RLD Performance is competitive on AFR cylinder heads and our own premium racing valve spring kit lines. RLD Performance welcomes wholesale suppliers interested in stocking and reselling our premium line of LSX upgrade racing valve spring kits as well as other kits by application.  Also, RLD Performance can properly specify and upgrade your AFR cylinder heads or any other cylinder head, in house, where mail order companies cannot. Check our brief catalog listing, check the links for your part numbers and email or call us for final pricing as pricing can change from our suppliers at any given time.  We encourage Ford or Mopar enthusiasts interested in full line parts to email us for a quote.