Is this cam to big for a 305?


Comp Cams Part# 08-430-8.

280 int / 280 exht. Dur @ .050 224/224 with .510 lift

Thanks for any info?

 

Yeah thats prolly too much duration for the stock chip, heads and intake. What's the LSA on the cam?

 

ya thats kinda big for a 305.. i wouldnt go over an lt1 cam although some people have doen an lt4 cam.

 

It's not too big..... If you want to go carb.

Other people have said that you can tune for big cams in the L03 by using a wide band O2 sensor and extensive dyno chip tuning.
Seeing as I'm way too lazy to learn how to burn chip after chip in conjunction with dyno testing, I think you should run it, and tell us how it works.

 

I think it will put the 305 on its face with the swirl port heads and wimpy exhaust system.

 

[What's the LSA on the cam?]

What does LSA mean?

Thanks for all the replys.I already have the cam and I think it MIGHT work with extensive tuning.Ill try to get it in soon and let you guys know how it runs.By yhe way Ill also be putting on S/R torquer heads,Holley TBI intake,and Crane Cams gold race roller rockers.

 

Lobe seperation angle.

 

I don't think the stock heads would handle that lift anyway.

But to answer your original question, yes I think it would be WAY too big.

 

What makes a cam to big for our engines? Is it the Dur @.050 or is it the Lift?I know if the cam is to big you wont be able to tune the ecm.Is it possible to take an ecm from a 350 TBI truck and tune it.Has anyone ever don that?Thanks again for all the replys.

 

It's the valve duration that makes it too big for an engine, even if it doesnt have a computer. The duration has to be closely matched to the intake and head combination and cubic inches

 

OK I think Im starting to understand.Just one more question.Whats the max duration a 305 can have?Thanks for all the help iroc22.

 

Well it also depends on what heads/intake you are going with. Lets say u go with the torquer heads and holley intake, then the max duration I would go with would be around 230* @ .050" before its overkill. You obviously know that you will have to burn a custom chip for a bigger cam.