Humm... very intresting... I don't think that the '93 PCM would be happy with the '94-'95 TB.

What kind of boost were you running with all the P&P with the '92-'93 topend?

10-11psi. Most of those details are about 5 posts above.


I have nowhere near enough time in my life to do the work for everyone that wants it.
My goal is to release all the details of the LIM porting when we're sure of it (after the
next two cars get things sorted out). Next changes to the LIM will REQUIRE a mill.
No other way around it.

Bear in mind I've made NO modifications to the TB yet, but that comes with the next
changes to the LIM. Shaving the TB shaft for a little more flow at the top end, and
alsoadding the nozzle for my WI.

My goal is to return the car back to the low-end power of the 92/93, and gain top end
at the same time without a cam.

Wow Great work Bill !! ,
this all sound so exciting!,
I cant wait till im more mecanicaly inclined to benifit from all the findings you have made and shared with use

Keep up the good work

Well then I will wait to get specs for all of this. I will put aside some of the parts I am going to need so I can have them when they are released.

Being prepared will be a good thing. Initial street testing and flowbench data show that
what I'm running in the car right now is comparable or even slightly better than running
The 61 or even possibly the 62 Crow Cam with no other work. That'* pretty remarkable.

Would the cam get me more? Probably. But not nearly as much if I hadn't done this prep
work. The top end of the Series 1 motor has alot of restrictions that must be dealt with.
And the heads won't gain you much in comparison to the LIM.

It'* a tough thing to say what really makes the difference, with so few cars getting really
serious about modding. You have to remember that the direction I took was to see how
far it could go WITHOUT the intercooler or a cam/rockers. From this point on, more power
will come at a much higher price per hp.

Yeah, gotta pay to play is how i see it. My next big thing is to get another car, a cheap SE
or something to drive in the winter and when i am doing mods, i cant drive the Alero all
the time.
Im took hooked on my Bonneville, i would need another one.

Thats some awesomes info and devellopment Willwren, even if i have a Serie II , i found that very interresting, your on the right way!
cant wait to see performance data.

Mike, I found a way to increase the velocity of the air in the runners of the Series 1 L67
LIM by as much as 25%. Someone else has discovered a way to make it even more.

This type of modification can greatly increase the performance of the car without a cam.
In fact, it improves it so much, that this by itself may improve performance MORE than a
cam by itself. The two together would be more, of course, but there'* a point where you
have to determine where the restriction is.

I don't know how much of this will relate to the Series 2, but I know for a fact SOME of the
future findings will. From my understanding, the S2 L67 LIM is already pretty well port-
matched to the heads, while the S1 is not. But it'* not just the port-matching that is the key
to unlocking the potential. It'* the design of the intake manifold itself.

Bill, this is all truly amazing. Video is 1x right...real time? Your 0-60 time is unbelieveable...not to mention the 0-100.

Won't someone buy your ideas? Or is there just no market what so ever?


Stay tuned late this summer and you may find what you are looking for (**hint**).

Logan, nobody will 'buy' my ideas because I won't sell them. I've always GIVEN my ideas
to the Forum. I'm at the point now where I could probably pad the paycheck a bit by doing
this work for members and selling intakes and Superchargers setup right, even exhaust
manifolds.

I don't have the time, nor do I wish to have a conflict with my Admin duties here.