Product Description:
Hawks Motorsports is pleased to offer our clients the following.
These Chevrolet Performance short cast-aluminum valve covers bring Chevrolet Bowtie styling to compatible small-block Chevy engines with the pre-1986 perimeter-bolt cylinder-head pattern. Select by head design and rocker clearance.
| Producer | Chevrolet Performance |
| Condition | New |
| Design | Short; perimeter hold-down bolts |
| Material / finish | Cast aluminum; natural cast finish |
| Rocker compatibility | 1.5:1 stamped rocker arms only |
| Ventilation | PCV opening in each cover; grommets supplied |
| Oil control | Oil baffles |
| Year | Verified application / required configuration |
|---|---|
| Pre-1986 design | Small-block Chevrolet heads with perimeter hold-downs and compatible 1.5:1 stamped rocker arms |
Select by cylinder-head design and rocker clearance rather than vehicle year alone. Chevrolet excludes the 350/290 crate engine and specifies 1.5:1 stamped rocker arms.
- Two short cast-aluminum valve covers
- PCV-opening grommets
The natural cast finish and Chevrolet Bowtie design suit a period-style small-block engine compartment. Short-cover clearance is specific to the stated stamped rocker configuration.
The catalog distinguishes these short covers from tall cover 10185064, which carries explicit 15- and 18-degree head compatibility.
Confirm the head bolt pattern and rocker-arm clearance before assembly. Use suitable sealing components for the head and cover combination.
Set the PCV and breather routing for the engine, then tighten using the applicable cover procedure and check for leaks.
Is this a pair?
Yes. This listing is for two short valve covers.
What mounting pattern does it use?
The pre-1986 small-block perimeter hold-down pattern.
Can I use roller rockers?
Chevrolet specifies 1.5:1 stamped rocker arms only for this part.
Is it approved for the 350/290 crate engine?
No. Chevrolet specifically excludes that engine.
Does the manufacturer confirm 18-degree head fitment?
The catalog entry for 12480127 does not state that approval. Select the cover by the exact cylinder-head and rocker configuration.
