CC306 Cam - Stock LT1
Thread Starter
Drifting
Joined: Mar 2008
Posts: 1,756
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From: Wichita KS
CC306 Cam - Stock LT1
I am entertaining the thought of putting a CC306 cam in my stock LT1. Running 1.6RR with LT4 retainers.
Will there be retainer-to-guide seal issues? Comp Cam's states machine work required. Any ideas?
Will there be retainer-to-guide seal issues? Comp Cam's states machine work required. Any ideas?
Drifting
Joined: Jul 2007
Posts: 1,293
Likes: 36
I think you will be disappointed with the loss of low end torque with that cam and a stock LT1. You might gain a slight increase on the upper end. Also, tuning my become an issue. CC306 is older technology. The positive thing you will notice is better throttle response. That's about it.
You would be happier and get better performance overall, and a bit of a lopey idle, with the HOT CAM or comparable cam, and 1.6 rockers with matching new springs.
I wouldn't put that cam in there unless. . . ported the heads, change the rear gears to at least 3.07 or 3:45s, if auto, at least 2500 stall, rebuilt bottom end, headers, raise the rev limiter to 6200, 52mm throttle body.
Just my 2 cents.
You would be happier and get better performance overall, and a bit of a lopey idle, with the HOT CAM or comparable cam, and 1.6 rockers with matching new springs.
I wouldn't put that cam in there unless. . . ported the heads, change the rear gears to at least 3.07 or 3:45s, if auto, at least 2500 stall, rebuilt bottom end, headers, raise the rev limiter to 6200, 52mm throttle body.
Just my 2 cents.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Quite a few guys over on Z28 and LS1/LT1 have done it and most all have been disapointed that the motor won't pull until near 4000RPM and then lays down around 5800/6200RPM.
One reason is with 290 degrees of seat timing, the CC306 kills the DCR in an other wise stock LT1. Theres a lot of other stuff in the valve timing on this cam that makes it a mis-matched dog for an other wise stock LTX, I'm not going to get into.
You really need some good head work and a serious bump in SCR to make that cam an effective performer in a 350 inch motor.
Send the heads to AI or LLyod to be ported and bump the SCR to around 11.6, then you'll have a good running motor with the CC306. It'll pull to 6800RPM. Other wise step down to a Hot Cam or the LPE 219.
Will
One reason is with 290 degrees of seat timing, the CC306 kills the DCR in an other wise stock LT1. Theres a lot of other stuff in the valve timing on this cam that makes it a mis-matched dog for an other wise stock LTX, I'm not going to get into.
You really need some good head work and a serious bump in SCR to make that cam an effective performer in a 350 inch motor.
Send the heads to AI or LLyod to be ported and bump the SCR to around 11.6, then you'll have a good running motor with the CC306. It'll pull to 6800RPM. Other wise step down to a Hot Cam or the LPE 219.
Will
Thread Starter
Drifting
Joined: Mar 2008
Posts: 1,756
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From: Wichita KS
My car is a '95 6-speed W/4:10 gear, 42mm throttle body, Bosch III 24lb injectors. LT headers, 3" BB exhaust.
These are the springs Lloyd Elliot recommended for up too .600 lift:
http://competitionproducts.com/prodi...p?number=98215
A friend and I were talking. He used to have a '92 with a Crane cam that was a little larger then the HotCam. His suggestion was "go bigger" then the HotCam with the mods I have already done. I will consider AFR heads and LT4 intake next year. Depends on economy....
These are the springs Lloyd Elliot recommended for up too .600 lift:
http://competitionproducts.com/prodi...p?number=98215
A friend and I were talking. He used to have a '92 with a Crane cam that was a little larger then the HotCam. His suggestion was "go bigger" then the HotCam with the mods I have already done. I will consider AFR heads and LT4 intake next year. Depends on economy....
Drifting
Joined: Jul 2007
Posts: 1,293
Likes: 36
Stock redline is 5800. You"ll gain about 30+ horsepower and 30+ ft/lbs of torque. You will really feel it in the midrange power. Car has good kick with highway gears. I had a stock LT1 with Hotcam and it had a nice effect on passing power from about 55 to 110mph. When I installed a higher stall, it increased acceleration even more so and I was able to a wicked burn out from a stand still without powerbraking it.
It really is a trouble free daily driver cam, with a mean sound to it.
It really is a trouble free daily driver cam, with a mean sound to it.
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Ryan, here are those springs with matching retainers and locks.
http://www.competitionproducts.com/p...sp?number=VSA6
http://www.competitionproducts.com/p...sp?number=VSA6
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Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
I agree that either will be about 25-30HP stronger than what you have now.
The LT4 springs won't handle the LPE 219 with 1.6 rockers as it is .560/.560 lift and GM only recommends the LT4 spring up to .530 lift.
For you the Hot Cam looks to be the easiest swap as you already have the correct springs and rockers.
Will
Thread Starter
Drifting
Joined: Mar 2008
Posts: 1,756
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From: Wichita KS
Ryan, here are those springs with matching retainers and locks.
http://www.competitionproducts.com/p...sp?number=VSA6
http://www.competitionproducts.com/p...sp?number=VSA6
A guy on another forum had a new Lingenfelter 219 cam for sale $200. Just responded that he used it in an engine and was very pleased with it.
Thread Starter
Drifting
Joined: Mar 2008
Posts: 1,756
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From: Wichita KS
The HotCam specs still impress me. I am wanting a cam that has a noticeable idle too it. Looking around, watching You Tube video's of idle quality, reading old posts on here and a few other forum's. I'm going to order a HotCam and try it.
Had to entertain the thought of stuffing a big cam in the engine for a while.
Had to entertain the thought of stuffing a big cam in the engine for a while.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
YES and NO.
It depends on how your measuring the cams.
The LPE 219 has a bigger lobe. So no matter what the rocker ratio (as long as its comparable between the 2 cams) its bigger than the Hot Cam (.560 vs .525 w/1.6 rockers) on lift.
Duration at .050 between the 2 are comparable but the Hot Cam has about 10 degrees more duration at .050 (219 Vs 228).
Seat timing can't really be compared because GM dosen't list the "Lash Point" from which they measure the Hot Cam's seat timing. Some companies use .020 and some use .006 on hyd cams. Its all really marketing gimick to make some cams look bigger than they actually are back in the good old days when every body looked at seat timing as a measure of how "big" your cam was....
LPE uses .006 and the 219 is 270 degrees duration. The Hot cam is listed as 279/287 duration from the (unknown) "lash point".
Full cam card on the LPE 219 can be found here:
http://www.lingenfelter.com/document...mationv1.3.pdf
Full cam card on the GM Hot Cam can be found here.
http://paceperformance.com/index.asp...D&ProdID=22960
For all intense purposes they are withing 10 degrees duration and .030 lift, not that much different.
Will
Safety Car
Joined: Apr 2005
Posts: 3,624
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From: Dale City VA
Since they are all on 112 L/S with more than likely 4-6 degrees of I/C advance built in... there would be little if any differance performance wise.
Will
