I know the LT1 and LS1 are nothing alike. im not using the LS1 as a guide to mod my LT1. Just trying to figure out what cam for the LT1 would be compairable, not with bowerbands, but with the lope of the cam, and surge. i know the LT1 is a low end torque monster, and the LS1 is a high rpm horsepower motor, LT1 are fast off the line but die down while the LS1 keeps pulling.

I want something that sounds mean. while givin me a decent power increase.

If i went with the gm 845, whats a good set of rockers and springs?

 

Comp Cam Pro Magnum 1.6 RR's, Non Self Aligning(NSA) for 7/16" studs.
Buy some ARP 7/16" rocker studs
GM guideplates PN# 14011051

For springs, I would go with some of the PAC springs and hardware that were the original Beehive springs. Do a search and you should find out what you need.

Dan

 

the LS1 and LT1 just don't sound the same...probably because the firing order is different, among other things. Find a sound clip of an LT1 with a cam lope that you like instead.

 

CC306 is my vote. Its a proven cam, works great in M6's, easy to setup valvetrain for. [Crane 10308 Spring Kit] Pro Mags, Magnum or Trickflow pushrods. After running this cam I wouldnt go any smaller. Just decide wether you want NSA or SA. I would run NSA personally.

-Dustin-

 

http://www.lt1engine.com/soundlib/8lt1borlaGM847.mpg

I like the sound of this gm 847, is it slightly bigger and more agressive than the 845?

how do either of those compair to the 306? i heard a 306 and it didnt seem much diff than my car now. i know that its a big diff over stock, but the car i heard it on wasnt rear clear.


just listened to one in a TA and it sounds mean
CC306 = (230/244 112LSA)
http://www.lt1engine.com/soundlib/46lt1cc306.wmv
sounds like mine between shifts

got the sound clips here
http://www.lt1engine.com/soundlib/cam.html

 

maybe the 306 will do the job, if not i'll just try somethin else. At least somebody i know recommended it. thanks

so this cam is roughly $260, from thunder

is it cheaper elseware?

 

The CC306 and GM847 are BIG cams. Just FYI.

Dan

 

i dont know much about cams, so maybe it is a big cam that i want. sounds like what i want. good for my M6. then i'll do heads down the road. I want to get dyno tuned anyways, so i'll do the cam install first then go get it tuned.

I'm going to have to shop around a bit and see what places offer the best prices for the time being.

thanks for everyones input.

 

Put it this way... the cc306 in your LT1 is going to be more aggressive than the 224/230 you drove in your buddy's car. Everything that you noticed about that LS1 that was different from stock will be amplified in your car if you go with the 306. I'd reccomend doing a bit of research... search the board for "cam stock heads" and see what people are recommending.

There is no perfect cam out there... it all depends on what youre looking for.

 

if your going to go with the gm847 cam, you might as well go with the le4 cam and get more horsepower.

 

There are alot better cams out there for stock heads than the CC306, it has old lazy lobes that kill your lowend/midrange torque because it bleeds off so much compression.

 

as somebody else has already told me, the LS1 cant be compaired to the LT1, so im disreguarding the TA i drove already, i believe it had some hidden issues anyways. the video i posted above of the black WS6, is exactly how i;d like it, he had no trouble backing it out and getting right into it. sounded mean, and yet drivable. I'd like it aggressive, but i dont want it to be a pain in the *** to drive. i already have to take everything that i do easy or i'll tear the bottom of my car apart.

I'm sure i'll love the 306, but thanks for your concerns. I wont know if its the right cam for me until i actually get in and drive it. only one way to find out.

looks like its going to cost me just under a grand, doing the labor myself.

 

if you do get the 306, be sure to get gears to go with it. My friend has a 355 w/ ported heads and everything except for gears and it drives like crud. Definately need the gears, although i would rather have a small cam that makes low-end power because thast where you have your fun at

 

I strongly urge you to read through this page and familiarize yourself with the terminology:

http://www.malcams.com/legacy/misc/CamData.htm

Big cams need big airflow to complement them. On a stock unported heads, stock cubed engine, a cam such as a CC306 or a GM847 is going to be a waste because the powerband that those cams operate in is way out of spec with the amount of airflow that the stock heads are capable of delivering. A consequence of running a cam with bigger duration numbers is that the point in the RPM range where the power starts to come on is moved progressively higher the bigger you go, so at a certain point your low end torque will begin to suffer as well.

Yet another consequence of running too big of a cam is that as size increases, engine vacuum decreases. If you like having power brakes, the only way to maintain enough vacuum is to run a vacuum reserve tank, which is another ball in the juggling act. The above link breaks down camshaft durations into brackets and explains the consequences of each one.

When ordering the priorities for what would determine the correct camshaft choice, sound characteristics should be one of the last on the list.

 

I like my 3.42's are they not high enough? down the road when its time to rebuild the rear, i was going to swap to a 12 bolt and do some 4.10's, but thats not for a while. I dont race the car often, i drive it some weekends here and there. i mostly drive my 96 SS, it's clean enough to keep me happy while leaving the 97 SS in the garage,


edit:

Im not looking to go and run 12's at the track, i dont mind if im not getting all the power im suppose to get if i had heads. I just want a change, down the road i'll upgrade the rest of the components to even things out. My car is strong as it sits now, with traction low 13's arent a problem.

my origonal plan was to change as little as possible, and do just a cam, nothing else, but one thing leads to another, and i'll be replacing a bunch of stuff i didnt plan on doing. which isnt a problem by any means.

if i go along with the plans with the cc 306, i'll end up doing heads and ported intake and tb soon, and then bigger injectors. then an ignition.

i'm not trying to squeeze every last horsepower out of my car. just want to have some fun replacing stuff, and have something to work on. and i want it to sound wicked

It does feel nice haveing so many people look out for you, and its much appricated. I wouldnt know where to start on anything if it wasnt for all the member here over the years. Whichever way i go, im sure i'll be more than satisfied.