McMod.com offers you a starting point for building a performance motor. These are New Thunderstorm High Flow Head Cores, with custom valve guides. Hand honed to fit valve stems where no valve seats are needed, and works to give better lubrication for 1.900 intake, 1.630 exhaust high flow tulip shaped stainless valves. Springs with titanium topped collars give up to .800 lift to prevent coil bind. These heads are sold in match pairs only and work great. For better performance, we also offer our own full hand-ported, polished, flow tested upgrade version. We can also work with your builder to make any modifications you might want. $2499.00/Set 23.5lbs We offer a full line of matched, performance components that will allow you to achieve the best results: roller rockers, pushrods, lifters, pistons, gaskets, heads, and crank assemblies. All custom made to work together properly to achieve optimum results. This product can only be as good as the builder. All Tolerances Must be checked and maintained to proper specifications. Please don't buy this product if you can't install it properly. If you need more information, please contact us. Tell you what, just feel free to contact us about any product you are interested in.

NOTE: This product is only as good as the builder. ALL tolerances MUST be checked and maintained to proper specifications! Please don't buy this product unless you have all the installation information required (not included in kit but found in most repair manuals). If you need more information, please contact us. Tell you what, just feel free to contact us about any product you are interested in. MCmod.com. All prices subject to change.

Price $1,649.00 (Free shipping and handling)