Since I couldn't find any of this info anywhere I decided to have it tested myself. I have yet to have the rear manifold and a stock front manifold tested. This should be getting done soon though, just for comparison reasons. I originally wanted to start a "how fast on stock parts" thread but for the sake of me tearing into the engine, it would probably never happen thus never being close to full potential. What I will be doing is posting some scan numbers before and after each modification. Unfortunately I will not have track times, and probably never will in the future. This thread is for those of us that don't mind doing work ourselves to save a few bucks and keeping the car as reliable as possible for daily driver needs in all conditions. I live in Iowa. Weather can be unpredictable, along with street and highway conditions and the car needs to be up to the task at all times.
THese numbers will be as the manifold is in front of you, left to right
Plog- 186-200-182
Ported front manifold- 164-170-151
I have a half an hour into the ported manifold. I would have done a little bit more smoothing and polishing but the cheapo stone I had broke. I will be trying to do a little more with the low # port and probably leave it alone after that.
Did 3 back to back pulls yesterday. Was around 25*f outside. Pulls were in 3rd gear with car at 180*
All 3 pulls were consistant. 02 was 880, timing at top of 3rd was 10-11* IAT was around 38*f
