Chevrolet Performance 12558060 Details
Cast Iron Vortec SBC Head
America's favorite high-performance cast iron small block cylinder heads offer big power and bigger value. Chevrolet Vortec Cylinder Heads' fast burn combustion chamber and high-velocity ports combine to produce big horsepower. Vortec Heads can be mildly ported for additional performance and milled up to .040'' for increased compression ratio. The Vortec Heads come with various intake and exhaust valve sizes to complement the high-velocity port design and your performance needs. Vortec Heads outflow Bow Tie Heads right out of the box and are a 20 to 40 horsepower bolt-on increase over earlier cast iron small block heads. Vortec Heads require a Vortec-style intake manifold due to an improved manifold mounting flange and gasket design and raised intake ports. Modifying the heads to accept early intake manifolds is not recommended. Vortec Cylinder Heads fit all 1955-Present small blocks except LT1/LT4 reverse coolant flow engines and current LS1-style engines. JEGS Easy Kits are designed by JEGS professionals so you get all the parts you need.
JEGS Easy Kits are designed by JEGS professionals so you get all the parts you need.
Does Chevrolet Performance 12558060 fit your vehicle?
1965 CHEVROLET CHEVELLE
- CC: 4638
- Liter: 4.6
- SubModel: SS
- CUI: 283
- EngineType: V8 ( 4.6 L / 283 )
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Is the Comp Cam 249-12-600-4 useful with this heads? Thanks
I have to run a stock cast iron intake with a 4412 2 barrel is that possible with these heads? For a street stock class on a dirt oval
What diameter rocker studs does it come with?
question is what full roller rocker is compatible with these heads with stock height valve covers
I have 10239906 heads i need to replace on my mercruiser 350 will these 12558060 heads work?
Are these sold as a set or individual
Just purchased the vortec heads kit #12558060k2. I am now going to purchase the lunati cam#638-10120302 for sbc 350 and my question is upon ordering can i get springs and pushrods for the 507 lift??
I know the stock Chevy vortec heads were prone to cracking in certain areas. Do these heads have a heavier casting, or are they the same as stock?
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Ships on 02/27/19
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