Heads are ported to achieve maximum flow performance.
We flow HD heads only.
Porting jobs include: valve job, heads glass beaded, set spring tension, and valve to seat pressure set to 175 lbs.
We do not polish intake or exhaust ports because a glass beaded finish atomizes the gas better than a polished finish. Our porting jobs are proven on our Dyno and on the street. Better breathing, better gas mileage and better performance for all around use. Send in your manifold for machining purposes.
Extra guides $60.00 if needed