For a 96 LT4.

1.
Comp Cams :
CCA-07-306-8

Intake Duration at 050 inch Lift: 230
Exhaust Duration at 050 inch Lift: 244
Duration at 050 inch Lift: 230 int./244 exh.
Advertised Intake Duration: 290
Advertised Exhaust Duration: 307
Advertised Duration: 290 int./307 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.510 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.540 in.
Valve Lift with Factory Rocker Arm Ratio: 0.510 int./0.540 exh. lift
Lobe Separation (degrees): 112

OR

2.
Comp Cams:
CCA-07-467-8

Intake Duration at 050 inch Lift: 230
Exhaust Duration at 050 inch Lift: 236
Duration at 050 inch Lift: 230 int./236 exh.
Advertised Intake Duration: 280
Advertised Exhaust Duration: 288
Advertised Duration: 280 int./288 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.576 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.570 in.
Valve Lift with Factory Rocker Arm Ratio: 0.576 int./0.570 exh. lift
Lobe Separation (degrees): 113


OR

3.
GM LT4 Hot Cam

Intake Duration at 050 inch Lift: 218
Exhaust Duration at 050 inch Lift: 228
Duration at 050 inch Lift: 218 int./228 exh.
Advertised Intake Duration: 279
Advertised Exhaust Duration: 287
Advertised Duration: 279 int./287 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.492 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.492 in.
Valve Lift with Factory Rocker Arm Ratio: 0.492 int./0.492 exh. lift
Lobe Separation (degrees): 112


Stock LT4 Motor.
I plan on Doing A Camshaft when i redo the front timing chain seal.
I had planned on putting the LS1 "beehive" springs.

I Would Just like a Nice cam with good HP gains for a mostly stock car.
My car currently (and will stay this way for a while) has 2.5" Magnaflow Xpipe right after cats with 2.5" pipes to cutouts (almost always open) right before stock mufflers

If I Want to stay (mostly) stock motor then i should stick with the lt4 hot cam... right?

If i want to step up to a more radical cam with a 230/244 duation (instead of 218/228)... what would i need to modify for safety and peace of mind about my motor.

Thank You!
-Kevin

 

Yes, it sounds like hotcam is for you.

CC306 will require major mods to really take advantage of it. It'll require headers, head porting and new valvetrain, definitely gears, intake port matching, and a custome tune is an absolute must. Its borderline streetable.

 

Why not something in between?

Maybe comp 305, 503 or 466. If you're going to upgrade valve springs why not go with more lift.

Of course hot cam would be cheaper/easier since you could stick with your stock springs.

 

If it is your daily driver stick with the LT4 can but cet the LT4 1.6 rockers as well to take fukk advantage of it.
Later you can go to some headers, porting, manifold and gears.

 

I agree with staying away from the cc306. I have it now and also many other mods to go along with it. On a stock motor my vote would be against it. I did see some P/P heads that were 2.00/1.60 valves on ebay for the LT1, they looked nice. Good package with the cc306 cam. It takes mine a while to get going but upstairs that 306 pulls like a freight train!

 

I agree with the others. If you're going to leave you heads stock for now stay away from the CC306. A better choice would be the CC305 or "Hot Cam".

 

I'd go with the cc305. If you do the "Hot Cam", go with a 1.7 rocker to get a little more lift out of it.

 

Of the cams you have listed I would go with the LT4 HC. I think the 305 is a great choice as well and if it were my car for that combo I would go with the cc 305. Now the HC has a ton of upside including a rock solid proven result cam that you will have a great idea of exactly what every mod will do before you do it just by doing a search.

 

If you already have an LT4, then you already have 1.6 roller rockers and improved valve springs. I would go with the Hot Cam; that would give you lift of .525 int and 5.25 exh with the stock 1.6 rockers. I wouldn't bother with expensive beehive springs. The stock LT4 springs will perform just fine for a "mostly stock" car; you won't gain anything from the beehives at "stock" levels of performance.

 

I would go with the new CompCams XFI series, upgraded valvetrain including beehive springs, rockers, pushrods......

The 467 is pretty agressive, but would be a great choice.......or back down to the 466 (218-224)......

I would not and did not go with the 306......I don't like the mismatch in the lifts....doesn't make sense with LT4 flow characteristics...

I did the CompCams503, but that was just before the XFI series came out.....

 

Yeah....
How much would that cost to do it right:???
How much for parts ?
How Many hours to do it?(so i know what to expect to pay my mechanic)

Thanks

 

The LT4 from the factory is a nicely matched engine........

If you do a cam, then you need to do the heads, you do that and you want to rev higher, so best to upgrade valve train, then you need to help it breath better, etc, etc, etc.......

So there really is no right way.....

I am a sucker for good advertising and the XFI cams sound so good and if you believe the advertisements they work best with the beehive springs.....etc..

but for most of us cost often determines what we do or don't do...it does for me....

 

GM Hotcam

 

The 306 is quite a cam and y ou won't be taking advantage of it with stock LT4 heads.

I would get the 503 which has been the better preformer for us on the dyno and track over the 305 and hotcam. The 503 is also quite tuneable and still sounds great.

 

i was refering specifcally to the valve train. How much to do that right?


heads are another project... and when i do the heads i will do the intake... but before that is headers... and clutch- SMFly and DFrct centerforce... and gears... and before that is fix the oil leak and drop in a cam... and before any of that is fix the front bumper... and before that is tires... and before that.... the main thing required... make the money!

....

awww Hell.... lets just pull the motor and stroke it.
... then i could build it to take a 242/248 (or bigger) and run open headers and rev to 7,000 rpms


the 224/230 was what my friend suggested. he in the past year has had an: 01 T/A, 02 Firehawk, and currently has: 77 LS1 Transam- black of course, and a 99 Z28 camaro... all with some form of mods: exh, cam, gears, and definitely the cake being an LS1 in a '77

 

$$$$$$$$$$$

 

Hot cam or something with a little more lift and get a rev kit such as AFR's hydra rev or crane's (or come i dunno one of the two). The rev kit will give you quite a feeling from 4800+ RPM for when you nail it.

 

How much do these rev kits cost? which one is better?