At Tim Zepp Engines, we have specialized in cylinder head development for over 17 years. We have spent countless hours on the flow bench, dyno and the race track to give us reliable feed back and testing results to be able to offer you exceptional cylinder heads, that have the proper flow, runner volume and cross sectional area needed to make exceptional torque and Horse power.We have just listed a few of the cylinder heads we offer. if you need a set of heads that are not listed, call us and we will give you the information on the heads you are looking for.

We offer new cylinder heads and induction packages as well as programs for repairing or modifying your existing heads.

Here are some preliminary pictures a SBF Cleveland style cylinder head we are modifying for AFD. David Webb owner of AIR FLOW DYNAMICS in Australia is the designer of this awesome cylinder head. He has contracted me to redesign the ex. side of his 2V head. i am engineering and developing a "302" ex. port. When finished these heads will bolt on any car that currently uses a SBF 302 style header. As the project progresses i will add more pics.

Here area couple of pictures of a set of Brodix 18 degree SBC CNC cylinder heads a customer brought me. the engine would rev to 6300 rpm and then the HP would flat line. these are the heads that Brodix sells that you can run standard valve train on. One of the problems is the 2 nd choke point is to small and there is not enough cross sectional area at the apex of the short turn. I raised the port top and bottom and added a generous radius. This put me in the 2.640 CSA. Since there was minimal room to grind i added some area to the short turn area and epoxied a reverse fin in the back of the bowl to help stabilize the air. Heads ended up flowing 310 cfm @.500 lift and about 380 cfm @ .700 lift.

Engine originally made 680 HP @ 6300 and then flatlined. I dynoed the engine with no other changes besides the heads and intake match. Now the engine makes 748 Hp @ 7500 RPM's. In the customers dragster it picked up 1 1/2 tegnths and 4 MPH. (7.60 ET @ 184 MPH...not bad for a 406CI. SBC.

This is an Edelbrock E BOSS manifold I modified to fit the AFD 351C 4V cylinder heads.