Ok I have a 89 Firebird the motor is stock, its the LB9...

I have two questions:

I want to know...does that motor have a hydraulic roller cam?

and I found a 350 LT1 cam that I can get for cheap, its a hydraulic roller cam... will that work with my 305??


Thanks alot,

Joel

 

also would it be worth it to put it in?

 

anyone? please?

 

You can verify if your motor is in fact a roller by
removing a valve cover, loosen off a rocker and remove the pushrod. Look down the pushrod hole in the head with a flashlight There is a drain back hole at the end of the head, shine the light down there.
to see the top of the lifter. A roller lifter has a guide to keep it aligned.
You'll get a much better result if you combine the cam swap with other airflow increasing modifictions.
Tke note of the casting number on your heads while you have the cover off. Should end in "081" if so these are good heads to soup-up.

Pull the heads off and give 'm a good pocket port job.
Consider upgrading to 1.94" intake valves. You can bump up the compression ratio by haveing the heads shaved a bit. (.040/.060") Up grade the valve springs to at least the ZZ4 specs.
Larger cams like more compression. The limit will be the availabe octane pump gas you can or will buy. The LT1 cam may need
to be installed a little advanced (5 deg) to favour torque in a 305.
Your new cam will like an increase in rear gear ratio especialy
if you have 3.08's or lower now.

To readjust your rocker after you're done looking, Just bump the motor over till the push rod is all the way down on that valve.
(lifter down on base circle of cam).
Reinstall the rocker and tighten till clearance just disappears.
( 0 lash). put the cover on (with out the bolts)and start the motor. All should be quite and run smooth. Shut it off and tighten that rocker 1/4 turn. Your done.

 

Yes your motor is a roller. The LT1 cam will work just fine, you just need to shave the dowel pin a bit to make it fit. No problem.