Necessary for some aftermarket computers and scan tools.

Acts like Plenum spacer. Evenly distributes airflow to all cylinders, does not add Plenum volume.  Specify Plenum type when ordering : Stock , accufab , Precision , or BGC intake.

Fel-Pro intake manifold gaskets are designed to be replacements for stock-type intake gaskets. This means that Fel-Pro intake manifold gaskets are ideal for stock rebuilds as well as mild performance engines.

The best fasteners made, get the extra clamping force needed with all that boost.These ARP High Performance series head bolt kits are tough! They are rated at 170,000 psi--15 percent stronger than Grade 8 fasteners. They come available with hex heads or reduced wrenching 12-point heads that eliminate the need for valvetrain removal when re-torquing cylinder heads.

Some people believe this is the only way to bolt down your heads. A little more involved if you do blow a gasket.These Pro series studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 190,000 psi.  All kits come complete with hardened parallel washers for an even load distribution and accurate torque readings

Every rebuild we do gets a set of these, helps keep main caps in place.These ARP main studs are made from 8740 chromoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide finish for corrosion resistance. The kits come complete with hardened washers and high-strength hex nuts