MTI Racing GM LS7 Ported Cylinder Head

Regular price $1,995.00 Available

Title

MTI Racing GM LS7 Ported Cylinder Head

Price... $1995.00

MTI Racing provides a CNC Ported version of the LS7 Cylinder Head.

MTI Racing cylinder heads are precision CNC machined in house on our Haas and DMG Mori 5 Axis CNC machines to ensure that exact tolerances are maintained.

We have partnered with former NASCAR Specialist to optimize the available area of the stock casting out to 277cc’s ! Our LS and LT heads are cut in the exact same machine right here in Dawsonville, Ga. that has had Cup Series Racing heads developed in it.

Following each porting, each cylinder head receives a precision 5 angle valve job, not 3 angle used by many shops, to maximize flow and provide extended life of the cylinder head. To improve the performance of our valve job, MTI Racing also performs a contouring procedure on the exhaust valves seat using our Newen valve machine which blends the chamber into the narrow “throat” section of the port. Our development in this critical area is based off of countless hours of NASCAR cylinder head testing.

Note of Consequence: Don’t be fooled by competitors with flashy CFM numbers using larger valves, etc., that may be drastically larger than ours. Just like every chassis dyno will report your car at different power levels, so do cylinder head flow benches. Through our research, making a port bigger is NOT always better. Similar phenomenon occurs with CFM flow numbers. A particular head with slightly lower numbers may end up making MORE POWER due to the quality and direction of airflow. At the end of the day, MTI Racing is about making POWER, not selling CFM numbers.

Base price package includes porting your supplied cylinder heads. Upgraded valves and springs are additional cost.

Price $ 1,995.00 per pair

This is a "core exchange" product. If you do not provide us with your cylinder heads to port before we send cylinder heads to you, we must charge you $3990.00 for you to purchase our product, and then when you provide us with your used cylinder heads, we will credit you back $1,995.00.

Options:

Stainless 1 piece 2.02/1.57 valves   additional $275.00

MTI Racing LSx Dual Valve Spring Titanium Retainer & Seals Kit   additional $345.00

LS7   8452

Intake Runner Volume         264 stock   277 ported

Exhaust Runner Volume        86 stock     90.5 ported

Intake Valve Diameter            2.200     OEM

Exhaust Valve Diameter          1.62       OEM

Valve Stem Diameter              8mm

 

Flow Characteristics                  

                                                           CFM

                                Intake                                           Exhaust

  Valve Lift            Stock          MTI  CNC                   Stock              MTI CNC 

              .1                 76                      82                       56                         54

              .2               150                    162                     110                       109

              .3               229                    251                     157                       151

              .4               290                    307                     196                       199

              .5               327                    345                     215                       221

              .6               358                    372                     221                       231

                                              .650     381                                                   

              .7               372                                                227                       237

 

Note: Tested with 4.125 bore, clay entry on intake port. No pipe on exhaust port. Untouched combustion chamber.

Stock valves.       

 

Need some help? Ask us!


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