Corvette C4 Forum 1984 through 1996

what cam To use for 383 LT4

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Old Sep 10, 2006 | 11:41 AM
  #1  
vette96's Avatar
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Joined: Sep 2006
Posts: 6
Default what cam To use for 383 LT4

Good day every one,

im new in this fourm, and sorry for jumping to thread like this.

I have a 383 with 195 AFR's, 58 throttle,

what do you suggest for a cam, and what injectors to use.

im running the comp 305, right now , i dont like it. i feel no power.

any hints, thanks. ...

Note: drivability is an issue.
 
Old Sep 10, 2006 | 08:21 PM
  #2  
raisinbran's Avatar
Joined: Sep 2005
Posts: 406
Default RE: what cam To use for 383 LT4

you could put in some SVO #30 injectors, with an AFPR. for cams i would suggest hotcam, 305 like you have, or anything with intake duration 220-225 is good for street use. what ratio roller rockers do you have?? have you gotten a tune yet?
 
Old Sep 11, 2006 | 12:33 AM
  #3  
corvette king's Avatar
Joined: Mar 2006
Posts: 1,162
From: deltona fl, 32738
Default RE: what cam To use for 383 LT4

ORIGINAL: vette96

Good day every one,

im new in this fourm, and sorry for jumping to thread like this.

I have a 383 with 195 AFR's, 58 throttle,

what do you suggest for a cam, and what injectors to use.

im running the comp 305, right now , i dont like it. i feel no power.

any hints, thanks. ...

Note: drivability is an issue.
HEARS WHAT I WOULD DO,,,WHAT EVER CAM COMPANY YOU GO WITH CALL THEM AND GAT A CUSTOM GRIND FOR YOUR ENGINE TELL THEM WHAT YOU HAVE AND THEY WILL CUT THE CAM FOR YOU ..THAT IS HOW I ORDER EVERY CAM I GET
 
Old Sep 13, 2006 | 12:57 PM
  #4  
vette96's Avatar
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Joined: Sep 2006
Posts: 6
Default RE: what cam To use for 383 LT4

im running the 1.5 rockers...

maybee the intake duration is little small, because after adjusting the fuel pressure regulator,
it become better, but it rev to 5k, and i feel that some thing is stoping it from going further.

i think the solution is by either increasing the intake duration or adding more fuel by bigger injectors like you said.

yup i did that. but one thing i noticed in the sccaning tool, that the ignition adv, is varying from -15 deg -40 deg.


.....
 
Old Sep 14, 2006 | 03:39 AM
  #5  
raisinbran's Avatar
Joined: Sep 2005
Posts: 406
Default RE: what cam To use for 383 LT4

custom grind is a good idea. but i would also go with 1.6 rockers.

does your scan tool tell you if your getting knock counts? -40 may be a little to hot, but im no expert. knock counts will tell the story.
 
Old Sep 14, 2006 | 02:41 PM
  #6  
vette96's Avatar
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Joined: Sep 2006
Posts: 6
Default RE: what cam To use for 383 LT4

yes some times, it tells , and some times it counts missfire.

but the history of the cylinders are clear. I get only missfire counts xxxx.

only it happen one time that i got sever missfire, and it shows that on the history of the cylinders on the scanning tool.

but it's solved.

 
Old Sep 16, 2006 | 07:02 AM
  #7  
vette96's Avatar
Thread Starter
Joined: Sep 2006
Posts: 6
Default RE: what cam To use for 383 LT4

could that be a leacking injector that causing the misffire??

just a thought/
 
Old Sep 20, 2006 | 06:13 AM
  #8  
vette96's Avatar
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Joined: Sep 2006
Posts: 6
Default RE: what cam To use for 383 LT4

guys,,

i called the company that did the tunning, they said about the missfire counts it is normal due to the

camshaft changing, but only if there is no real missfire.

and about the camshaft i called comp cams, and im getting a new custom cam.

230, 236 / .576, .570 113 LSA.

they said it is the best for my applecation.

thanks for every one, and i hope the information here is usefull for others.

best regards

 
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