RHS 54503 Small Bore LS7 Pro Elite 266cc Cylinder Head, For LS1/LS2
LS7 Chevy LS V8, Bare Cylinder Head Style, Aluminum, Natural, CNC-Machined Runners
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Finally, LS7 Heads for Small Bore GM LS Blocks (LS1-LS6-LS2) are Available
RHS Pro Elite3.900" Bore LS7 CNC-Ported Cylinder Heads not only get the best LS rectangular port heads onto all GM LS 5.7L 6.0L blocks, they also provide up to 100 bolt-on horsepower over stock and feature all the benefits of other RHS LS7 heads. These new Pro Elite cylinder fit all LS applications down to the 3.900" bore, and utilize LS7 intake manifolds. Offered in CNC and P-Port (unfinished runner) versions, the heads intake ports are raised .220" from the stock location for a straight line of sight into the cylinder, and utilize the LS 6-bolt head design compatible with the RHS LS Race Block and GM LSX Block. They can also be used with OEM, 4-bolt blocks. Additionally, a .750"- thick deck surface and reinforced rocker rails make for more rigidity in high horsepower and boosted applications. RHS Pro Elite 3.900" Bore LS7 CNC-Ported Cylinder Heads are designed to use eight standard, LS1-style exhaust rockers and eight offset LS3-style style intake rockers and stands. Buyers will save money, as they wont need to order a full set of less common 1.8 ratio LS7 rockers.
Includes (1) bare 355-T6 aluminum CNC cylinder head
CNC-machined intake & exhaust runners as well as combustion chambers
Intake ports raised .220" from stock location for strait line of sight into the cylinders
FIt LS Blocks down to 3.900" bore - Perfect for 5.7-6.0L (LS1/LS6/LS2/LQ4/LQ9) block equipped applications
Uses (8) LS3 offset intake rockers & (8) LS1 intake or exhaust rockers OR (8) LS3 exhaust rockers over less common/more expensive LS7 rockers
Will work with standard 4-bolt OEM LS blocks or aftermarket 6-bolt blocks (RHS LS Alum. Block & GMPP LSX)
.750" thick deck & reinforced rocker rails make heads ideal for high HP & boosted applications
Set-up for 2.100" intake & 1.575" exhaust valves
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Q & A
Tim talks about the new Edelbrock powder coated cylinder heads and provides a little history on Federal Mogul heads.
Tim shows off our aluminum cylinder heads for 348-409 Chevys.
In part 2, you will read about the Generation 4 small block series of V8s that share the same platform as the Generation 3 discussed in part 1.
Trying to decide which power plant to use in your latest project? Here's a quick guide of modern V8 engines for hot rodders to consider.
Illustration showing the various styles of engine heads you may encounter on the Small Block Chevy engine.
Engine Cylinder Numbers
Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.