okay so first things first. I have an 88 tpi from a trans am im throwing this in my gbody. Im going to be using it as a daily driverm i dont want nothing to crazy. I am thinking of going with a p/n CCA-08-302-8 camshaft. Was recommended in one of my tpi books. Duration at 050 inch Lift: 210 int./220 exh. , 0.480 int./0.480 exh. lift . Im using the 305 tpi with a 2004r tranny. Running no emissions so obviously im going to be needing an aftermarket chip. Also i plan on getting a 2500 stall converter, high flow runners most likely edelbrock and a 52 mm throttle body from bbk. I also would need some new valve springs so. Any one want to give me some opinions on selecting this cam. Btw im not doing any machine work to the engine or heads so everything is staying completely stock. please remember its just a daily...my firebird is getting all the goodies

 

You don't really need the 52 mm TB .

 

thanks for the info , i figured id get a bigger throttle body to allow more air to come through...any suggestions fellas. hows that zz4 cam

 

You really only need a bigger tb if you get better flowing heads. I have looked into the zz4 cam alittle bit. Looks like it yeilds good gains for the price.

 

im going to look into the zz4 cam, D's89IROCZ you have a zz4 cam right?

 

You definately don't need a bigger TB, unless you just want one. Most people say the stock TB isn't even a restriction a StealthRammed 350, so you might want to move that down on the 'things to do' list.

 

Oh, I forgot, here's some more info on that ZZ4 cam, springs, and retainers on my site.

 

iceman i believe i just spoke to you about this, what a coincidence huh haha

 

Alright dude, since you didn't win. Sallee is selling ZZ4 take off cams for $95. Like you said, you'll have to get the springs and retainers, and locks, though.
http://www.sallee-chevrolet.com/frame.html?/sales.html

 

The comp cams 302 cam is much much much much better than the ZZ4. The ZZ4 has slow ramps and way too much exhaust bias.

The LPE 74216 cam, IMHO, has better valve events and is selling from LPE for $144.95 shipped.

If you think you can handle the exhaust lift then there is another comp cams cam with more lift, but also 210/220, that is the 08-304-8, or you can go with the 08-501-8 which is a better cam. Of course, the stock heads suck and you can easily overcam it.

 

The cam you picked is not bad at all, but the LPE 74216 that "91" referenced is a steal at $145 shipped and would fit your application nicely. You sure wouldn't see $100 difference between it and the "perfect" Comp Cam.

As others have said, the 52mm throttle body is just not needed right now. The stock 47mm T/B and a $35 airfoil will do you just as good. Clean up the base intake while it's off - at least take out the lip at the runner entrance and smooth the casting flaws - port the plenum and get an AFPR if you don't have one already. You probably won't have to have a chip burned for these mods with the MAF system, but taking the time to learn to burn your own would be a good thing.

Like you and others said - definitly get new springs - the ones recommended for a Comp with similar duration and same or higher lift will work.

 

BadSS

Just wondering where you got that $35 airfoil.

Also, I thought the stock throttle body was 48mm. Not tryin' to correct you, just for my own info.


Is there info on flow numbers for the stock TB and TB w/airfoil?
Also, I recall seeing info somewhere on boring the stock TB.

Thanks

Art

 

yup I am runnngi the ZZ4 cam right now . Sure there are better choices . But I really like the strong mod range it has . Nice and snappy down low too. %0 bucks was worth it to me

 

Yep, typo - 48mm T/B

Here is the link for the air foil
http://www.ecklers.com/product.asp?p...dept%5Fid=1770

 

so i selected the zz4 camshaft along with some lt4 springs. did some reading and found out thats a good enough spring for it. HEll the zz4 crate came with them so why not. BTW im running speed density in it

 

Springs have a diameter. Do you know what it is on the LT4 springs?

If you haven't figured out yet, it's bigger than your stock head's spring pockets. You're going to have to pull the heads to machine the pocket to use it.

I hope you didn't buy it yet.

 

Excellent consideration. I know it may not be the same, but this guy talks about the required modifications needed to run the LT4 valve springs on Vortec heads. http://www.chevyhiperformance.com/techarticles/49083/ Basically he talks about machining the heads to fit the larger diameter springs (as Mr. 91Z28 said).

 

I am runnnig SD1007 springs for my ZZ4 cam . They are 120lbs@1.2 and 350 @1.8 they are stock diameter. You can get them from scoggin Dickies

 

oh damn i wasnt even thinking of the size of the zz4 springs, so thats a big no no on the stock heads. I guess i'll have to go with
D's89IROCZ suggestion.. Im glad i havent ordered them. I was waiting on an ebay auction which i havent bidded on yet.

 

That's good. Selling new stuff for a loss always sucks.

You may want to look into offset locks (+0.030") and a spring shim (+0.030"). You may or may not need it, but it's peace of mind. Remember, it's retainer to valve seal clearance that you are concerned about, not retainer to boss.

There are quite a few springs out there that can handle the lift of a ZZ4 cam in stock size. They probably won't last long though or may have some stability issues, that's generally why the higher the spring rate, the bigger the diameter.

 

the SD1007 spring I quoted , is teh BIGGEST 9 meaning most stiffest ) spring you want to use on a hydraulic roller setup . Nothing over 350 lbs is recomended for fear of colapsing the lifter. These things are good for 570 lift ( according to SD performance )

 

Heh, I'm not sure why there needs to be a discussion on this. Those aren't the only springs on the market, as stated. Howards Cams has plenty that'll work as well.

They aren't the stiffest, and the spring rates doesn't mean they are the best. They will suffice, but as stated, check them now and then.

With narrow and stiff springs you are sacrificing longevity for something that'll fit. That's not a problem. Just check them and don't set and forget them, as stated.

 

I went with a XR269HR in my setup. Wont take it out on the street for another month but it sounds awsome.

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Mods. GMPP Vortec heads, Comp Cams XR269HR, Crane Gold Rockers, Hooker headers, SDPC intake manifold, free flow exhaust, Air Foil. Future mods, TPIS Runners, AFPR.