If you are putting the cam into a engine that already has a roller cam in it, then all you will need to do is swap them out. The pin that sticks out of the cam may need to be shortened though, but I'm pretty sure it will be ok the way it is.

What cam did you go with? There are three different flavors. They are the torquey B-body cam, the Vette cam and the F-body cam...

I've been wanting to put one of my B-body cams into my brothers 93 K-1500 truck and see how it performs. But he seems to be happy with the 190hp that it makes.

 

its a B-body lt1 cam

 

If you're going to put it into your '93 9C1 you may not notice much difference. You already have a L98 cam:
PN10111773
202/207
.413/.428 1.5 rockers
.441/.457 1.6 rockers
114.5 LSA

Compare that to the specs for a B-body LT-1 and there isn't a lot of difference. If keeping the same heads it would be interesting to just put some 1.6 rockers on it, gain the lift and achieve about the same thing as the B cam without having to swap the cam. Just my $.02.
BTW,changed my cam before I found out it was an L98. Would have either gone 1.6 rr or gone to a bigger cam if I knew then what I know now.

 

well wheres a good place to buy 1.6rr's and while im at it what about valve springs. I could do all three

 

The L98 cam has quite a bit more duration than the LT1 B-body cam. Even if the lift is similar, the duration will shift the torque band up the rpm scale. Given this fact, the L05 9C1 should have a peak torque rpm higher than the b-body LT1. But it doesn't. And its HP peaks lower. I still don't understand why GM would have put this cam into an L05. And a cam that has this much more duration than the original "peanut" cam (let alone the b-body LT1 cam) somehow makes only 10-25 more HP in the 9C1 L05 than the civilian L05. It doesn't idle, or drive like a cam with those specs. Maybe GM installed it "degreed" advanced/retarded in the direction that would essentially have the effect of reducing the duration. That's the only explanation I can think of that makes any sense at all. On the other hand, the L98 was known for torquey low end performance with an unimpressive top end. Obviously the intake design has a great influence on this.
I know you measured the lift with a micrometer Paul, and I have to believe you know what you're doing. However, you did not measure duration. So even if the lift is the same as the L98 cam, I simply can't believe the duration specs are the same. Perhaps there's a number stamped into the cam somewhere? Would Kelly Rosato care to comment on this again?

 

Hey Kevin,

IMHO, the specs on the L98 cam are still very mild. 10-25 HP is not too shabby for just a cam and injector change. L05's still have the low-flow, high swirl heads. Get Vizard's book on Chevy heads. He'll tell you good heads can compensate for a weak cam but a good cam will not compensate for weak heads. Look at the whole package and you'll see why low RPM torque is good an high end falls off. Then compare entire systems of the TPI cars with L98 cams.

And, yes, the cam is stamped ...773 on the end. I forwarded that to you when I sent the cam specs. Don't make me get the degree wheel and indicator out.

IIRC, Mr. Rosato also disclaims this cam.

 

heh my names kevin too and at first i thought you were talking to me. Anyway im still wondering what some good brands would be for the roller rockers and valve springs or where to get them from, i might as well do all of them at once

 

Kevin Digital,

Not trying to avoid your question but I am concerned about you trying to change the springs with the heads still on. It can be done but I get the feeling you're just beginning to learn how to get into the engine. If that's the case, you should scout up some experienced help to do your cam and spring change. They should be able to direct you to some replacement springs too. You need 1.25 OD, .800 ID, about 110# at installed height of 1.700 inches. HTH.

 

b-body LT1 cam has a much tighter LSA, 3.5 degrees tighter. That is a big deal. Should give much quicker throttle response and a killer mid-range (a longer duration cam might be wasted as it would push the power to where the stock L05 heads choke it off.) I think it would be a nice upgrade.

 

well you were right on the experience thing but me and my freind at my house in college whos major is mechincal engenering with an automotoive emphasis so he knows what hes doing. He doesnt really konw where i could pick up some new valve springs or roller rockers though

 

DD, did you ever complete this cam swap? I'm in the middle of replacing a tired LO5 in my 1991 V truck, I ordered the Caprice TBI engine and I'm thinking of swapping in a B body LT1 cam...

Curious to see how it worked out...

EB