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Author Topic: GM ZZ430 Engine  (Read 439 times)
Jbyer8
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« on: August 18, 2014, 08:27:58 PM »

Still looking for my first camaro. Not looking for numbers matching vehicle, can't write a check that big. Anyways, came across a 69 camaro with this engine. Don't know a lot other than GM only made 430. Anything I should be aware of with this engine? It's paired with a TH400/TCI transmission.
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wtexz10
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« Reply #1 on: August 19, 2014, 10:31:58 PM »

Nice engine.    If I remember correctly the ZZ430 is a ZZ4 with a "Hot Cam" and fast burn heads.   I'm sure there are other differences but I think these were the biggest differences.   
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69 Camaro Z10
72 GMC C1500
79 Mazda RX7
04 Mazda RX8
06 Corvette Z06
10 BMW 650i
elcamino72
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« Reply #2 on: August 20, 2014, 06:25:57 AM »

As I recall they were a limited edition numbered series of 430 engines.  The engines all came with a jacket for the owner which corresponded to the number of the engine.  The engines were pretty stout and featured the, then new, fast burn heads which if I recall should have a "D" shaped exhaust port.  Should be a good strong Camaro!
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wtexz10
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« Reply #3 on: August 20, 2014, 06:04:38 PM »

This is from one of the original press releases from GM.

GM Performance Parts Launches ZZ430 Small Block

Las Vegas, NV, Nov. 3. - The new ZZ430 engine is the highest horsepower
small block crate engine GM Performance Parts has ever produced. And, with
GM Performance Parts planning to build only 430 of the engines, they will
probably be snapped up with the same kind of speed the engine delivers in a
street machine or a race car.

Limiting the production build to 430 units will create an added aura around
the engine, GM hopes. Each engine will be numbered, and will come with a
version of GM Performance Parts' 18-degree racing valve covers engraved with
the GM Performance Parts and ZZ430 logos. A jacket and cap, both with
matching serial numbers, also will come with the ZZ430 engine.

The ZZ430 is based on the small-block, 350-cubic-inch ZZ4, which delivers
355 horsepower and has earned a solid reputation for speed and durability.
True to its designation, the new ZZ430 produces 430 horsepower. This engine
is designed for use in 1973 and older street vehicles and any year off-road
vehicles.

The keys to upping the performance level, according to Michael Fellberg,
general product manager for GM Performance Parts at General Motors Service
Parts Operations (SPO), are a pair of new aluminum "Fast Burn" cylinder
heads.

The 23 degree Fast Burn heads are so named because of the head's ability to
quickly and completely burn the air/fuel mixture, creating higher cylinder
pressures that result in more torque and horsepower. The Fast Burn head uses
GM Performance Parts' cast-ported technology. Cast-ported means that as
incremental improvements in flow, combustion and cylinder fill were
identified during the development process, those improvements were
incorporated in the casting and machining tooling. As a result - unlike most
after-market performance heads - the Fast Burn head achieves maximum
performance "out of the box," with no additional porting needed to improve
performance.

The ZZ430 also gets a performance boost from a hotter camshaft, the "Hot"
cam originally used on the LT4 engine. The ZZ430 uses off-the-shelf
23-degree roller rocker arms and valve train components."
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69 Camaro Z10
72 GMC C1500
79 Mazda RX7
04 Mazda RX8
06 Corvette Z06
10 BMW 650i
Jbyer8
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« Reply #4 on: August 20, 2014, 07:52:23 PM »

Notice articles says cars 73 and later. Any reason why? I'm looking at a 69 camaro with this engine in it
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elcamino72
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« Reply #5 on: August 20, 2014, 08:59:31 PM »

I am fairly certain the reference to 1973 and older has to do with emissions requirements in place starting in 1974.
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