Called Comp Cams help line... this is the cam the recommended:

@.50

218/224 intake/exhaust duration
.495/.503 lift
112 lobe seperation

this is for my 383 stroker 10/4:1, stock heads, 2.59 gears, A4, stock intake and injectors with an updated PCM for the setup..

sounds good to me... what do you guys think? I'm also thinking of reusing my lifters.. anyone have any problem with this?

 

What is your intended use of the car? Daily driver, racing,...?

I don't have a proglem using used roller rocker. (As long as the milage isn't excessive, and are all working OK.)
On flat tappet cams,... always use new lifters w/ new cams.

 

I would trust theyre recommendations. I had a DOS Comp Cams program called CamHelp or something (dont know if its still available or not) and it recommended a slightly smaller cam for my daily driver than the one I already had in it- which would have been about right for the way I answered the questions. For my other car it recommended a cam larger that the one I already chose, which I also thought was right because after installation it didnt seem like it had a performance cam at all. So if theyre old software was pretty close Id say they gave you a point in the right direction.

 

those specs sound like the GM LT4 Hot Cam ...

24502586 Hydraulic Roller (LT4 Hot Cam)
This hydraulic roller cam is for service only for all V8 engines with roller camshafts. The duration at lash point in degrees (intake/exhaust) is 279/287; duration at .050" tappet lift (intake/exhaust) is 218/228; and maximum lift with 1.6 rocker ratio (intake/exhaust) is 525/525. Valve lash is zero/zero and lobe centerline is 112 degrees.

Technical Notes: The LT4 camshaft P/N 24502586 was designed to be used in a number of different engines. Therefore, the following change may need to be made to allow for correct assembly of the engine: For LT1 and L98 engines 1995 and before, the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is .30+/-.01", the same as the production part. For 1996 LT1 and LT4 engines, the dowel pin is in the correct position, extending .620" from the end of the camshaft. This camshaft has a fuel pump lobe.

 

Stock heads, 2.59, 383 stroker??????? :confused: :confused:

 

blew the motor... jsut doing a buidget rebuild and it was a few hundred more for the stoker.. so i figured why not... i can always upgrade the heads etc..etc.. gears..etc..etc.. later... while the motors out.. stroke it... and the only reason its out is because it blewup! :crazy:

 

best i found was 264intake 274exhaust comp part # cs-264h-r12 gave me the best performance. replace spring if neccesary> work for me ... :cheers:

 

Didn't catch your model year but I've run that cam in a retro roller mode, I've sent you mail. Used lifters and rockers may not be a problem, depends on the miles. Check valve stem contact after you install the cam to make sure you have the right pushrod length. With that cam spec you may want a 1.52 or 1.6 ratio rocker to get the best lift for a 383, that means check your valve spring specs to provide for the additional lift. There are 350's out there running .560" lift and working in the 11's so don't be shy.

I don't think stock heads are gonna flow enough to get your 383 to wake up, I've run a fairly docile set of Edelbrock 6089's which have 170cc intake runners (bigger than stock) and I have a bottle neck there but get great perfomance from a SuperRam top end. Don't get me wrong, your gonna see big time performance increase, it's just how much for the cubes available now.

Consider getting a higher flowing topend and heads to take advantage of your 383. For the money, I would get the LPE 219, (185~200cc intake runner heads and SuperRam intake if you have a rich uncle) and 1 3/4" headers.

Guess I got carried away, enjoy that mighty mouse, I do!


JMHO :steering:

 

running an LT1

 

bump up that compresssion :cheers:

i'd go more agressive. Comp cams seems to be lost lately. A lot of camaro guys are getting craptacular feedback from them.

I suggest new lifters on a new motor that had metal spinning around it too ;)
(assuming thats what happend)

I like the Xe 224/230 series

 

:bs

You're such a stud what do you need to ask us for????

 

:confused: :confused: :confused: :confused:

whats that about?

 

To me the cam they suggested looks like it will be a mild cam for a mild motor buildup. They matched it pretty good to the stock heads IMO. When you do the top-end (heads, etc) then you will want to get another cam that matches the new heads.

In the mean time, I would throw a hotcam in it and enjoy the 383 cubes. Should make for good driveability and some added power. I would expect to see around 330-340 rear wheel with a 383, stock heads, and a hotcam.

 

Sorry, wrong thread.....on my reply :rolleyes: