Summit racing ls3 hyroolic cam cnc ported cylinder heads

#Summit racing ls3 hyroolic cam cnc ported cylinder heads pro#

Speedmaster CNC-machined cylinder heads offer improved power throughout the rpm range for greater throttle response and top-end horsepower. They are available fully assembled or as bare castings. #D-7-present GM vehicles with 6.2L engines. Trick Flow GenX 255 cylinder heads are emissions-legal under CARB E.O. GenX 255 heads are available with standard or 6-bolt per cylinder mounting patterns. The coolant holes through the head deck were redesigned to work with all LS head gasket and engine block combinations. The valve angles have been changed from 15В° to 12В° to increase piston-to-valve clearance and allow the use of larger camshafts. Stock LS3 ports accommodate LS3-style intake manifolds and LS9/LSA blower assemblies. The heads feature fully CNC Competition Ported runners with a premium high resolution surface finish for maximum airflow and performance potential. Trick Flow engineers used the best features of OEM GM LS3 and LS7 cylinder heads, combined with their own race-winning engineering and technology, to create the GenXВ® 255-the ultimate ultimate square port LS cylinder head for 4.000' and larger bore engines. Trick FlowВ® GenXВ® 255 Cylinder Heads for GM LS3 * Dual seat spark plug pocket design allows both factory style tapered seat spark plugs and flat seat style plugs in wider heat ranges * Clean Cast Technology eliminates casting flaws and promotes a smoother internal surface finish for greater air and coolant flow * Premium bronze/manganese valve guides for long wear with particular focus on precise tolerances on valve seat concentricity They're available in bare, assembled, and complete but unassembled models. RHS manufactures these heads from premium materials and machines them to the industry's tightest tolerances. These heads feature factory-correct intake manifold alignment slots-ensuring that the intake manifold ports line up properly with the cylinder head ports to avoid power-robbing misalignment. This means all stock components will fit without modification.

#Summit racing ls3 hyroolic cam cnc ported cylinder heads pro#

RHS Pro Action LS3 rectangle port cylinder heads are premium replacement heads that utilize the same architecture as factory. Just some food for thought.RHS Pro Action LS3 Rectangle Port Cylinder Heads The 250cc intake runner is 13cc's smaller than a stock GM LS3/L99 intake runner and 20cc smaller than the ported intake runner. Benefits, such as port velocity, will not show up when comparing flow numbers. With our PRC 250cc LS3/L99 heads, you would have a 68cc chamber right out of the box, a better flowing cylinder head, AND we could get you into a larger camshaft with intake duration in the high 230's! With the correct camshaft, the PRC 250cc LS3/L99 heads will allow you to make a solid 30 HP more than you can porting the GM castings. This way our shipping/receiving guys will know to get them to our machining center as soon as they arrive!ДЇor those wanting to go all out, you need to check out our new PRC 250cc LS3/L99 aftermarket cylinder heads! They feature a smaller combustion chamber for more compression, a smaller intake runner for better port velocity, and better piston-to-valve clearance than the factory GM heads! For instance, if you were running ported GM castings you would be limited to our 231/236 camshaft on an LS3 and would have to keep the stock 70cc chamber size due to piston-to-valve clearance restrictions. Just be sure to give us a call before sending them to us so we can get your information. If you have some down time to spare and do not want to pay for the cylinder heads outright up front, you can send your specific cylinder head cores in for machining and assembly. All you would need to do is send your core cylinder heads back to us within 30 days, and we will issue a credit to reflect the price listed in the link above.

We do have a few used core sets in stock, so if you wanted to purchase them outright to minimize the down time you could. Keep in mind that we also offer an exchange program for the LS3/L99 cylinder heads! You can send in your cylinder heads to have CNC'ed, and pricing starts at $899 + shipping for the pair!