If you’re looking for more power out of your cathedral-port LS, look no further than the E-Street cylinder heads from Edelbrock. A new addition to the Summit Racing product lineup, these outflow the OEM casting by a decent margin, and make the most out of those 346 cubic inches. However they are designed to work on all GEN-III LS-based engines, including 4.8L, 5.3L, and 6.0L, with a strong emphasis on the 5.7L LS1 and LS6.
Official Release:
Get More Power Out of Your GM LS with Edelbrock E-Street Cylinder Heads for LS1/LS6
Edelbrock E-Street Cylinder Heads are just the ticket for making gobs more power with your LS1/LS6-powered hot rod. These bolt-on ready heads are engineered with the same cathedral port architecture as factory heads so all the stock components will fit without issue. The E-Street heads are cast using Edelbrock’s Clean Cast Technology™ to eliminate casting flaws and promote smoother internal surface finishes for greater air and coolant flow.
Features:
- A356 T-6 heat-treated aluminum castings
- Larger 210cc/75cc intake/exhaust ports move more air through the engine
- Modern 64cc combustion chamber design improves air/fuel charge ignition
- 1.29-inch dual valve springs good for cams up to .660 inches of valve lift
- Dual spark plug pockets work with tapered- and gasket-seat spark plugs
- Fully assembled with manganese bronze valve guides, powder metal interlocking valve seats, and stainless steel one-piece valves with hardened tips, valve locks, and chromoly retainers
Edelbrock E-Street Cylinder Heads for LS1/LS6 are sold in pairs. They fit most GM LS engines and components designed for cathedral port cylinder heads.
Rick Seitz is the owner and founder of GMEFI Magazine, and has a true love and passion for all vehicles. When he isn’t tuning, testing, or competing with the brand’s current crop of project vehicles, he’s busy tinkering and planning the next modifications for his own cars.
