I was looking into swaping out my old cam for a new one. I found one at Summit. Does anyone know what kind of hp gains this cam will give to my car. I also want to put 1.52 roller rockers on. Does anyone know what i can expect.

 

What else do you have done to the car?

Cam and rockers alone, yes they'll help, but your cam is at the limits of your heads and other factors such as how much your intake and exhaust can flow... Start opening those up in conjunction, and then start making REAL power. That cam sounds like it should work well though with stock or close to stock-stuff, and it shouldnt give you any stall-speed issues with your tq. converter.....

 

Yeah I want to put the cam lifter kit, a 1.52 rocker pushrod kit, and headers on. these along with other little things to try to push out a few more ponies. Any suggestions.

 

Thats the cam kit im going with. Except im going with 1.6 roller tip rockers and comp pushrods.

 

What kind of valve covers are you going to use? Dont you have to have taller ones?

 

You will have to pull your heads and have newe valve springs installed first, otherwise your valves will float with that lift on stock valve springs and damage the motor.

 

im going with edelbrock, i wonder if this cam will have a nice lope with its 212 duration @ .50 my friends 5.0 has a nice lope with is e303 cam with 220 duration @ .50.

 

Just a word of caution, the Edelbrock valve covers are NOT baffled.

What this means is you have to make sure and buy a breather checkvalve ontop of the cover so the beather tube does not fill the intake with oil spurting out from the passenger valve cover. Also, the drivers side PVC valve will become clogged easily without a baffle under it.

Also, the stock cam profile in the 2.8 and 3.1 60*V6 engines is .262i/.273e. Combine that cam with the 1.52 rollertip rockers and they barely clear at the exhaust max of .415" total lift. The max the stock iron heads can take is .420 unless you change the springs.

(note: the stock stamped steel rockers are rated at 1.5, however they actually range form anywhere between 1.42-1.49 meaning that our stock intake lift can be as low as .372"i/.387"e using them. By changing to 1.52 rollers you are insured a .398"i/.415"e lift on that same cam if new.)

Lastly, you can not put 1.6 rockers onto the factory cam and springs. You would have .419"/.437" on a max of .420" springs

So, The only thing you can do without pulling the heads and changing the vavle springs is to just add 1.52 rollertip rockers.

 

Im very familiar with your friend's cam...ran one for a while. Nice lope at idle, but lope disappeared very quickly....very mild cam the E was. Had to change it cause it quit too early in the rpm range for the other parts I had.

212 will probably sound pretty good on your motor.. Havent heard a cammed 60* before so it's hard to say, but it sounds like a reasonable number.....

 

Would this be also for the 3.4 engine & cam




Lastly, you can not put 1.6 rockers onto the factory cam and springs. You would have .419"/.437" on a max of .420" springs

So, The only thing you can do without pulling the heads and changing the vavle springs is to just add 1.52 rollertip rockers.

 

So if i go with this Cam kit and a 1.52 roller rocker and pushrod kit how much of the engine do i take apart. I know i take out the radiator to get the cam out, but do i need to take the heads off? Im gonna end up taking it somewhere and i dont want to get charged for stuff i dont need.

 

Your rad is gonna have to come out like you mentioned for the cam... anything else in the way... Heads will probably have to come off...to get to them you'll have to take off your upper and lower intake, valve covers, and unbolt the heads..

Basically you're gonna have to take the motor down to block

 

paul, Your 3.4 is different being the HT3.4 crate motor
"No" on yours, "Yes" on a used 4th gen camaro motor

You can add them fine, you have better springs on that HT3.4 crate motor that can take .500" lift.

The Camaro 3.4 can only take .420"

 

Did you even bother reading what I posted just 3 posts above you? I answered all of that already.

 

Yeah i read it. Sorry it must not have registered. I read yours than as i read TVRPAULS i got my signals crossed and i thought it was for the 3.4.

 

Just making sure, don't want to hear anyone toasting there bottomend from inadequate valve to piston clearance.