The Vortec heads use center-bolt valve covers, and the bolt pattern and angle of the intake manifold surface are different. Other than that, everything else should work fine.

To do so, they drilled the Vortec head for the conventional small-block Chevrolet intake bolt pattern and installed a small-block Chevy gasket. See All 16 Photos You can see the EGR crossover pipe ...

Vortec heads look similar to any '87-and-later center-bolt head-the ends have the same accessory mounting holes, the exhaust flanges are the same, head bolt patterns are the same, and so on.

Enter Edelbrock. Its new E-Tec heads retain the best features of the Vortec configuration but are set up for high-performance use. They bolt in place of Vortec heads and accept Vortec intakes ...

Aluminum heads, stroker kits, camshafts, and intakes are among the bolt-on parts that will step up the Vortec 8100's game. With bolt-together kits available that send power as high as 685 ...

GM Vortec 8100 is the most reliable big-block V8 engine ever made, with 340 hp and 455 lb-ft of torque. The Vortec 8100 was used in heavy-duty trucks and SUVs, featuring a strong 18-bolt head ...

Information about GM's 5.3L V8 Vortec engine used in the Chevrolet Tahoe ... The bulkheads accommodate six-bolt, ... The 5.3L’s cylinder heads feature “cathedral”-shaped intake ports ...