Is LS7 Cathedral Port heads?

All LS1, LS6 and LS2 heads feature tallcathedral-style intake ports. The LS7, L92 and LS3 heads feature rectangular intake ports. GM cathedral-style intake ports measure in the range of 3.125 inches high by 1 inch wide.

What is a cathedral Port head?

Cathedral head were originally intended for more low end torque for smaller displacement engines. They work quite well for this and also produce more power for a certain amount of mods. They are great street heads. But for maximum power you would go with max cubes and larger ports, square ports.

Are cathedral heads better?

Traditionally, cathedral-port heads offer smaller chambers than their rectangular-port cousins. The change in compression ratio can be as much as a full point or more, which can improve power by as much as 3-4 percent (near 25 hp on a 600hp motor).

Is it worth porting 706 heads?

Not only was the outside diameter of the combustion chamber on the 706 heads considerably smaller than the bore size, but even the small valves in the 706 heads were further shrouded by equally the small combustion chamber. Now, porting the 706 heads will definitely help power.

Are 317 heads better than 706?

The 317 heads flowed more than the 706 heads by as much as 20 cfm at some lift points. The peak flow numbers differed by just 7 cfm at 0.700 lift. The massive chamber volume of 71.5 cc’s put them a full 10 cc’s over the 706 heads.

What kind of cylinder heads do GM LS Cathedral Port use?

LSXceleration XF1 Cathedral Port 255cc/64cc 11° CNC Cylinder Heads – Stainless Intake, Stainless Exh, 0.660″ Lift, Steel Retainers 15-161221-2 6-bolt Cathedral Port CNC Cylinder Head Pair w/ Billet Rocker Stands. Features: 6 bolt…

How many CFM is in a LS7 CNC ported cylinder head?

Flowing up to 54 cfm intake and 37 cfm exhaust more than the factory LS7 CNC ported cylinder heads, you can achieve 393 cfm with our 265cc and 407 cfm with our 285cc cylinder heads for your street-driven vehicle!

Which is CNC heads for the Cathedral Port?

The LS CNC cathedral port heads are machined on a dedicated casting with extra thick sections to maintain… Dart Pro 1 Cathedral Port 15° 250cc CNC Ported LS Aluminum Cylinder Heads The Pro 1 CNC Series heads from Dart take performance to a new level!

Where can I buy new LS2 cylinder heads?

Though the LS6 and LS2 are no longer in production, brand-new bare castings are still available for around $850 from Chevrolet Performance Parts dealers.

Is LS7 Cathedral Port heads? All LS1, LS6 and LS2 heads feature tallcathedral-style intake ports. The LS7, L92 and LS3 heads feature rectangular intake ports. GM cathedral-style intake ports measure in the range of 3.125 inches high by 1 inch wide. What is a cathedral Port head? Cathedral head were originally intended for more low…