no I am buying a 1991 Olds the model is called a 98 the motor that is in it is a 91 L67 what I am trying 2 do is figure out what I should do with the pulley I can't tell how much boost I am making cuz it doesn't have a boost gauge

get a boost gauge first. THats a start

Techinfo will show you how you're making 7-8 psi stock by adding an aftermarket boost gauge. I wrote the article.

Then Techinfo will tell you what steps you need to go through to be able to decrease pulley diameter. There'* alot involved for a S1 L67.

i looked through there today
very confusing :?
i was wondering if i could get some easier advice
you know straight from you guys
hell maybe you could dumb it down to my level of stupidness

Did you read the article about cracked manifolds and fuel pressure?

How about you read it and post questions that you don't understand.

went back and read it a couple of times and understand now
i looked at the car today and there is good oil and fuel pressure and there are now cracks on the manifold
so every thing is clearer now

BS. You have cracked manifolds. I gaurantee it. You can't see them unless you either take them off the car or look VERY carefully with mirrors and good flashlights. Every square inch needs to be inspected.

I haven't seen a set of L67 S1 manifolds in the last 2 or 3 years that didn't have cracks.

I took mine off a couple days ago. No cracks. But 4 of the 6 ports were leaking between the flange and the head.

That'* another reason why you gotta pull the manifolds off. Do a search on holy exhaust cracks with me as the author. You'll see some neat pics. Some of the cracks are very small.

cracked manifolds my ***
no leaks either I did wat u said I took a 2 hour look

I also listened with the motor running
I used a mechanical stethascope 2 check 4 leaking
nothing