Roller rockers are used in some applications, but again the valve train components are matched to the performance level. | 
Some cams are ground in-house; those that come from suppliers are cut to Roush specifications. | 
A great deal of effort goes into making all engines leak free; still they're all given a black-light examination before being shipped. |
To provide proper oiling under all conditions special pans are used along with Melling's pumps. For appearance all pans are powder coated. | 
Roush engines come with many items normal crate motors lack. They even have their own spark plug wire looms. | 
Edelbrock manifolds are used in most applications; they may be either single or dual plane depending on the horsepower level. |
On carbureted applications Holleys are the mixer of choice, distributors are MSD, but the control box must be purchased separately. | 
To ensure quality even pulleys are made in-house. | 
Depending on the front cover and water pump used, V or serpentine belts may be used. |
A popular option for street rod applications is this serpentine system from Billet Specialties. | 
Another in-house item are these trick rocker covers. | 
Roush also offers a selection of air cleaners, this is the graphite version. |
Another new product is this inline fuel filter with a changeable element. | 
Each engine then wears a tag showing the test results and that it has been certified to be leak free. | 
Every engine is dyno tested and checked for leaks before it is shipped. |
Anyone looking for a Ford engine ought to be able to find one to make them happy in the Roush inventory. | | |