Originally posted by fastcougar:
You are using a maxed out SVT UIM according to your site (unless it's in need of being updated). So, my two questions are this: Have you siamesed the UIM dual port design to make it match up to the heads better? What about the LIM?


I left the UIM alone as you should.

The only work done to it was port matching the outlets to the LIM. I did that several years ago when I had the EHing done.


Yes the LIM outlets help transition flow into the tumble port inlets. I brought the primary inner wall over to the secondary inner wall. That should also help fuel mixing and getting a little more to the secondary valve. Also it eliminates the small dead space (reverse swirl eddies) between the 2 ports.
Everything was done for a reason or with a net result in mind. Like I always say the demon is in the detail work.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.