cc306 questions
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cc306 questions
i just installed a the cc306 in my 93 trans am with all the supporting mods (behives,magnum pushrods,magnum rollers,seats,retainers, melling pump with gm white spring)
wondering what i should shift at i searched and found that 6500 is a good shift point curious though how long other peoples engines have lasted revving that high my engine only has 33k on it and i use synthetic oil just looking for some feedback and what other people have experienced with the cam
wondering what i should shift at i searched and found that 6500 is a good shift point curious though how long other peoples engines have lasted revving that high my engine only has 33k on it and i use synthetic oil just looking for some feedback and what other people have experienced with the cam
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From: Kantuckee Yo'
The stock heads will NOT allow that motor to reach 6.5K RPM. My guess is around 6-6.2K for usable power. The dyno will provide the answer.
Its a crap shoot if your short block will last if or when you are able to rev to 6.5K RPM.
Its a crap shoot if your short block will last if or when you are able to rev to 6.5K RPM.
Last edited by wrd1972; Aug 24, 2007 at 03:28 PM.
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From: new orleans, la
Not to start an arguement, but please quote a source of this info if you can. I've never heard of 6.5k, on a cc306 and stock heads none the less, being that much of a tax on an iron block. Maybe I'm wrong, though.
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From: edmond,ok
http://videos.camaroz28.com/video/a6...94012c50ae.htm
here is my 355 lt1 headed cc306 motr , watch the tach, and no I didnt use nitrous ,if i did i would have spun through all the gears, i have another vid where I did spray though
here is my 355 lt1 headed cc306 motr , watch the tach, and no I didnt use nitrous ,if i did i would have spun through all the gears, i have another vid where I did spray though
Last edited by itzkwik; Aug 24, 2007 at 05:12 PM.
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From: Under The Hood
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From: Kantuckee Yo'
I based my statement on what I researched from searchig on this board when I was considering that exact cam.
Maybe I should have said:
The stock heads will NOT allow that motor to reach 6.5K RPM and retain any usable power for optimum performance. My guess for shift point is around 6-6.2K for STOCK HEADS. The dyno will provide the answer. It would have been a waste and pointless to shift at 6.5K on STOCK HEADS if the motor is out of breath, again the dyno sheet will provide the answer.
As for those that are making usable power and shifting around 6.5K on stock block and heads with the CC306, lets see the dyno sheet. Maybe I am wrong. Now if we have ported heads, different story.
As for the stock block not going the distance at 6.5K, I dont know how many more times this needs to be discussed. Some are lucky and some are not, that makes it a crap shoot IMHO. I have yet heard anyone ever say that all LT1 shortblocks are built like tanks, throw that cam in, rev that bitch to the moon, no worries man.
Maybe I should have said:
The stock heads will NOT allow that motor to reach 6.5K RPM and retain any usable power for optimum performance. My guess for shift point is around 6-6.2K for STOCK HEADS. The dyno will provide the answer. It would have been a waste and pointless to shift at 6.5K on STOCK HEADS if the motor is out of breath, again the dyno sheet will provide the answer.
As for those that are making usable power and shifting around 6.5K on stock block and heads with the CC306, lets see the dyno sheet. Maybe I am wrong. Now if we have ported heads, different story.
As for the stock block not going the distance at 6.5K, I dont know how many more times this needs to be discussed. Some are lucky and some are not, that makes it a crap shoot IMHO. I have yet heard anyone ever say that all LT1 shortblocks are built like tanks, throw that cam in, rev that bitch to the moon, no worries man.
Last edited by wrd1972; Aug 25, 2007 at 08:56 AM.
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From: Kantuckee Yo'
Knowing ALL the information shown in the original post, we will just agree to disagree till someone posts some actual dyno sheets on this combo.
What about the possible fact that the original poster does NOT even have headers, He did not mention any and does not have a signiture. Now how does that change things? All you guys know that the manifolds choke the motor down.
Okay, I will now hush.
What about the possible fact that the original poster does NOT even have headers, He did not mention any and does not have a signiture. Now how does that change things? All you guys know that the manifolds choke the motor down.
Okay, I will now hush.
Last edited by wrd1972; Aug 25, 2007 at 09:15 AM.
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From: Under The Hood
I based my statement on what I researched from searchig on this board when I was considering that exact cam.
Maybe I should have said:
The stock heads will NOT allow that motor to reach 6.5K RPM and retain any usable power for optimum performance. My guess for shift point is around 6-6.2K for STOCK HEADS. The dyno will provide the answer. It would have been a waste and pointless to shift at 6.5K on STOCK HEADS if the motor is out of breath, again the dyno sheet will provide the answer.
As for those that are making usable power and shifting around 6.5K on stock block and heads with the CC306, lets see the dyno sheet. Maybe I am wrong. Now if we have ported heads, different story.
As for the stock block not going the distance at 6.5K, I dont know how many more times this needs to be discussed. Some are lucky and some are not, that makes it a crap shoot IMHO. I have yet heard anyone ever say that all LT1 shortblocks are built like tanks, throw that cam in, rev that bitch to the moon, no worries man.
Maybe I should have said:
The stock heads will NOT allow that motor to reach 6.5K RPM and retain any usable power for optimum performance. My guess for shift point is around 6-6.2K for STOCK HEADS. The dyno will provide the answer. It would have been a waste and pointless to shift at 6.5K on STOCK HEADS if the motor is out of breath, again the dyno sheet will provide the answer.
As for those that are making usable power and shifting around 6.5K on stock block and heads with the CC306, lets see the dyno sheet. Maybe I am wrong. Now if we have ported heads, different story.
As for the stock block not going the distance at 6.5K, I dont know how many more times this needs to be discussed. Some are lucky and some are not, that makes it a crap shoot IMHO. I have yet heard anyone ever say that all LT1 shortblocks are built like tanks, throw that cam in, rev that bitch to the moon, no worries man.
I thought it was understood that it came down to the oil setup. As far as I know besides that on previous post everyone talked about the rod bolts being a weak link in high reving and I mean way past 6500.
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From: Cody,Wyoming 82414
Something will break...I had a 94 z28 with a cc306 and stock bottom end. and it didn't last too long i.e. spun main bearing. It's only a matter of time before you tear something up.
Last edited by Kaj; Aug 25, 2007 at 02:22 PM.