Are LS3 and LS7 heads the same?

The intake ports on the LS7 heads are different than those on the LS3. Instead of LS7 heads, I would either have the LS3 heads ported/polished or go with an aftermarket casting that’s designed for the smaller bore of the LS3 (like Mast or PRC).

Are LS7 heads CNC ported?

Lingenfelter LS7 cylinder heads are CNC ported in house to insure that exact tolerances are maintained.

What size are LS7 heads?

The LS7 is a Gen. 4, 7.0L, aluminum small block engine. It was available in GM’s high performance cars between 2006 and 2015. The LS7 is the largest displacement engine in the LS family….LS7 Applications.

LS7 Cylinder Head Specs
Casting Number	12578452
Material	356-T6 Aluminum
Combustion Chamber Volume	70cc, CNC-ported

Will LS3 heads fit LS7?

LS7 heads wont fit on an ls3.

How much power can a LS7 handle?

You’re safe for up to 1,000 horsepower on the factory LS7 block, and a naturally-aspirated build is unlikely to challenge those limits. If you want to add some insurance on your way up to that limit, however, you’d do well to invest in forged pistons once you’ve crested 700 horsepower.

How much does it cost to fix LS7 heads?

LS7 Head Fix, Repair Only. MSRP $2,519.88, Discounted: $2,267.90.

Can you supercharge an LS7?

As for the stock LS7 pistons, the hypereutectic (cast) material of them causes concern in a supercharged application, but they also deliver too much squeeze in the cylinders. The LS7 has a high, 11.8:1 compression ratio—way too much for street-driven blower engine.

What casting number are LS7 heads?

The LS7 cylinder head is cast with identification number 8452 while the LS3, L92, and LS9 are 5364.

How much can you stroke a LS7?

By cutting the stroke and retaining the LS7’s 4.125-inch bores, it becomes an oversquare engine, with a 1.14:1 bore/stroke ratio (the stock LS7 is essentially square, with a 1.03:1 ratio) and an effective rpm limit of 8,000 rpm….The Oversquare Solution.

Dyno Results
RPM	LB-FT	HP
3,500	416	277
3,600	412	282
3,700	407	287