1" Spacers

[coach]

Just one more question. Do you have a ported lower intake manifold with the EGR chimney removed? If so does it make sense that the removal of the EGR chimney might improve the flow numbers on cylinders 1 & 2. The flow numbers that I have seen from the Hemco seem to indicate a lot of flow to the middle cylinders, a little less 5 & 6 and the least to 1 & 2. Does this concur with your findings?

My EGR chimney is removed. As for specifics on flow numbers. I have none on my new engine. Once I install my FAST EGT module and probes...I may be able to offer some data.

 

[TTipe]

I'm curious if certain of us are running lower rocker ratios on what would be the leaner cylinders?

 

[coach]

I'm curious if certain of us are running lower rocker ratios on what would be the leaner cylinders?

If there are guys going to that extreme...they need to invest in a FAST XFI. If your pushing your parts hard enough that your that worried being lean...fatten it up.
Brian Lorenz's car ( 9.50's) Marty Green's car ( 9.60's) and my car ( no times yet)..all run Hemcos and ported intakes. All tuned by Cal Hartline. No spacers, no plates. I'm the only one going with EGT's in each header tube, so I'll find out if there are lean issues...but it won't be until late summer at the soonest. Got a bunch of bugs to work out before I really push it, and the FAST module isn't purchased yet.
I should also note that Brian and Marty do not run cages. Their cars are all stock appearing. No hard launches either. These are low 9 cars if they were interested in killer 60' times.

 

[1KWIKSIX]

the Hemco is stock appearing , both are 62MM it is one of the throttle bodies we bored out many years ago, I use a 1" spacer

Thanks for the feedback Mike!

dave

 

["Reaper"]

If any one has a HEMCO for sale let me know thanks. I posted in the WTB section as well.