Description

1 Pair of Complete GMM CNC Ported L76 L77 L98 LS3 Heads - Change Over

What you get

If you are looking for that extra edge or, more precisely, added power, then CNC technology will give you the results you need.

In fact, the cylinder head is one of the most, if not the most, important facets of engine horsepower.

GMM Racing Heads have been supplying cylinder heads to major race teams

They have led the industry by providing superior performance cylinder heads to a broad cross-section of the racing world.

Upgrade Options

Decking: Please choose how much you want decked off the head = $0.00 no extra charge - (if you are not sure please contact us first)

PSi Valve Springs: Please advise if you would like valve springs added to your order

Valve Stem Seals: Please advise if you would like valve stem seals added to your order

Class Race Option: These are purpose selected castings from our extensive inventory of heads within our workshop.

Due to the casting process during manufacture, some heads have more material thickness in the optimal places which allow a better porting procedure.

Race Class heads also are subject to extra hand blending of ports and valve seats.

Select this if you are after the ultimate head if winning races is in your DNA

Change Over: Please choose from our options below:

Change Over: You can bring your heads in and direct swap for a finish set, or send us your heads first and we will send you a set back. Heads must be undamaged, unmodified & in a satisfactory clean condition. Charges will apply for heads presented in a highly dirty state or minor repairs. Example (broken header bolts)
Purchase Outright: You can purchase a set of heads outright and keep your own + $1390.
Core Holding Deposit: You can pay a core holding deposit of $1390- and have this refunded to you when you send your heads back to us - (You must send us your heads no longer than 2 weeks after receiving the ones we send you.