ok for a long time now ive had this cam bookmarked at jegs as the one i would like to buy someday...

http://www.jegs.com/cgi-bin/ncommerc...46&prmenbr=361


Serious performance for modified 305 5-spd. & 350 w/3.73-up.
Adv. Duration: 272º/284º
Gross Lift: .454''/.480''
Series: 2050

but now i notice farther up the page ...

Hyd. Roller. For mid & upper RPM performance in 88-89 305 engines w/5-speed and 3.45 or numerically higher gear ratios.
Adv. Duration: 264°/270°
Gross Lift: .438''/.452''


because the ones that first mention hyd. roller are more expensive, does that mean i cannot get my first choice because it does not mention hyd rolller? and if so, is the second choice still gonna be ok?

 

You need a hydraulic roller cam for your car. You also need one with under .480" lift. i would shoot for .460" to be safe. A used LT1 cam would give you about the same specs as those but cost only fraction of what they do.

 

so im assuming that first selection isnt for hydraulic roller?

ok, the best hyd roller i can find on that page is

Factory hydraulic roller for 87-89 Corvette & F-body w/350 TPI.
Adv. Duration: 270º/276º
Gross Lift: .452''/.465''
Series: 2032HR



whats the specs on the best lt1 cam i can get?

 

I'd call up the company and start asking questions. If you got the cam, what springs/locks/retainers they'd recommend. I may not know alot, but I know what questions to ask, and what to compare the answers to.

I bought a cam and I'm waiting to put it into my car till I can get the appropriate head work done. Pocket porting, short side radius, and if nessesary machining for larger diameter springs. I bought a LPE 74211 cam. .500/.525 valve lift with 1.5r on 211/219 duration with a 112LSA.

According to LPE I don't need to machine the heads for larger springs, but I do need stronger springs (as if I didn't know that already). Haven't done anything yet, but the parts are ready and waiting for when I do decide to do it.

 

What Shifty said.

That second cam is a hyd. roller. Good choice for your rear end gear and 5 spd.

Another similar spec'd cam is the one from Competition Products on page 51 of their online catalog. It doesn't have nearly the lift of the LT1 cam though, but it's new. Not that buying a used LT1 cam is bad, it's just a little piece of mind knowing your cam is new, IMO.

It's the second from the bottom
http://www.competitionproducts.com/page51.html

 

are you talking about the hyd roller cam in my first post or my second post as a good choice for my car?

keep in mind when i get my tax return check, im already set on getting my 3.73's no changing my mind on that.

 

also why must i stay under .480?

 

Im assuming it is because they are assuming that your heads have the stock valve springs. Which are limited to those numbers. Thats my guess.

 

well i did a lil research after i posted and found it is cuz of my stock heads, but the heads i want to get (s/r torquers) can hold a maximum of .525 lift, so thhe cam with the .465 lift should be just fine

 

BTW, I did get one of the Competition Products vortec roller cams #264hp. I couldn't tell you how it compares to the LT1 cam but it's great compared to the original flat tappet cam. I used it with 1.6 RRs.
Smooth idle, good vaccum, improved torque throughout, improved top end over stock. Just what I wanted.

 

Because the the stock valve seats cannot take more than that. Some machine work would be required to raise that number. Pointless on stock heads. The SR's would work fine.

 

You mean the valve springs and guide bosses, right?

 

yea i could have SWORN it was the springs.....lol

 

COMP has a cam that is 210/220 .480 .480 that I almost put in my 305. I think its the CC302. Go to their site and type in 302 in the cam lookup section, and the specs will be there...

 

Main reason you have to stay at or under .480 lift is b/c that is all that the stock press-in rocker studs seem to handle. More than that and they start to come out.

 

cool but is it smog legal


that brings up another question, if i put a non smog legal cam in their, can my car still pass smog?

 

By smog you mean tail pipe sniffer? Passing is all in the tuning. I am pretty sure you could pass w/ that cam, w/ minimal tuning.

 

Yea I do. I was trying to keep it as non technical as possible yet get the point accross without re-directing the thread. So I just typed the fasting thing that came to my head about machining the heads for larger lift cams and bigger springs.

 

No excuses needed. We all have a brain cramp every once in a while.

Thank goodness for Excedrin otherwise I'd be brain dead all day

 

:werd:

 

well i did choose that cam from the 50state legal page.. but if im getting heads that can do up to .525, then i should get some bigger heads to take advantage, im here in cali so our laws are strict, and i assme its a sniff test. not familiar how they do it.

 

It is actually .560 lift. I just pulled out the paper and looked to make sure. Gives you more to work with.

 

that .525 was off memory, guess i was wrong, and i actually went to the website and looked. and the ones ineed jave a max lift of .600 ! theirs the .560 version to, but thats for the 86 and earlier intake face. 87 and newer has the .6