?? CC306 and the LT4??
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
?? CC306 and the LT4??
Well... with all these topics on cams, I'm really thinking about going to a bigger cam. Right now with the hot-cam, ported heads/intake(out of a 396 stroker), 52mm TB LT headers, high flow cats, and Power Effects exhaust my last dyno was 363 RWHP, 335 RWTQ. The rev is set at about 6700 RPM and peaks power at about 6500. By going with the cc306, what should I expect to gain? Higher revs? more tq? More HP? The driveability though might be in question, but not that important (dont drive it but for fun :D ) but would be nice if it would be somewhat streetable. I have 4.10 gears and would like to be able to pass the Texas emission test. Am I dreaming or what? :lolg:
anybody?????
jeff
anybody?????
jeff
Team Owner
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From: Athens AL
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Re: ?? CC306 and the LT4?? (GS345)
I would figure you'd be closer to 400rw with that cam
DRAGRACR runs it I think
DRAGRACR runs it I think
Le Mans Master
Joined: Jul 2000
Posts: 5,012
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From: OKC OK
Re: ?? CC306 and the LT4?? (GS345)
What should I expect to gain? Higher revs? more tq? More HP?
The driveability though might be in question, but not that important (dont drive it but for fun :D ) but would be nice if it would be somewhat streetable.
would like to be able to pass the Texas emission test. Am I dreaming or what? :lolg:
[Modified by LT4POWR, 11:29 AM 2/19/2004]
Melting Slicks
Joined: Dec 2001
Posts: 2,437
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From: Gainesville Fl
Re: ?? CC306 and the LT4?? (GS345)
Hey GS345. I am thinking about putting the hotcam in my LT4 along with pretty much the exact combination of mods you have. i am very impressed with your dyno result as that is exactly what i would hope for. i know this is a little off your origanal topic and i apologize for stealing your thread but do you have a write up on your cam swap? are you still running OBDII? any information would be greatly appreciated
Pro
Joined: Feb 2002
Posts: 744
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From: Houston Tx
Re: ?? CC306 and the LT4?? (GS345)
GS345, the CC 306 will get you quite a bit more top end and will peak a bit higher. I would think with the correct valvetrain components and dyno tune on your setup you would see ~20+ more hp depending on how decent your heads are.
My setup is VERY similar to yours . Only difference is I have 1.7 rr's and an electric wp (do you have one?). My car has dynoed 376 at 6100rpm but immmediately dips 15hp only to recover it by 6800 redline. It appears that if I can fix it I should be very near 380+. Given our two numbers my rockers and wp yeilded 13rwhp but like I said I think I will actually peak 380 when fixed.
The CC306 idles with quite a lope (but sounds awesome) and will most likely surge at some cruising speeds and give up some low rpm power for more top end. You will have to idle it up a bit to try to avoid vacum loss too..
My setup is VERY similar to yours . Only difference is I have 1.7 rr's and an electric wp (do you have one?). My car has dynoed 376 at 6100rpm but immmediately dips 15hp only to recover it by 6800 redline. It appears that if I can fix it I should be very near 380+. Given our two numbers my rockers and wp yeilded 13rwhp but like I said I think I will actually peak 380 when fixed.
The CC306 idles with quite a lope (but sounds awesome) and will most likely surge at some cruising speeds and give up some low rpm power for more top end. You will have to idle it up a bit to try to avoid vacum loss too..
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
Re: ?? CC306 and the LT4?? (1996man)
do you have a write up on your cam swap? are you still running OBDII? any information would be greatly appreciated
:cheers:
jeff
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Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
Re: ?? CC306 and the LT4?? (Shriker)
GS345, the CC 306 will get you quite a bit more top end and will peak a bit higher. I would think with the correct valvetrain components and dyno tune on your setup you would see ~20+ more hp depending on how decent your heads are.
My setup is VERY similar to yours . Only difference is I have 1.7 rr's and an electric wp (do you have one?). My car has dynoed 376 at 6100rpm but immmediately dips 15hp only to recover it by 6800 redline. It appears that if I can fix it I should be very near 380+. Given our two numbers my rockers and wp yeilded 13rwhp but like I said I think I will actually peak 380 when fixed.
The CC306 idles with quite a lope (but sounds awesome) and will most likely surge at some cruising speeds and give up some low rpm power for more top end. You will have to idle it up a bit to try to avoid vacum loss too..
My setup is VERY similar to yours . Only difference is I have 1.7 rr's and an electric wp (do you have one?). My car has dynoed 376 at 6100rpm but immmediately dips 15hp only to recover it by 6800 redline. It appears that if I can fix it I should be very near 380+. Given our two numbers my rockers and wp yeilded 13rwhp but like I said I think I will actually peak 380 when fixed.
The CC306 idles with quite a lope (but sounds awesome) and will most likely surge at some cruising speeds and give up some low rpm power for more top end. You will have to idle it up a bit to try to avoid vacum loss too..
jeff
Team Owner
Joined: Apr 2001
Posts: 22,267
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From: Dallas TX
Re: ?? CC306 and the LT4?? (GS345)
306 should get you to 400rwhp i think... especially if you're at ~370 as it is now. A guy in our club has an LT4 with the 306 and his vette is faster than his viper :lol: :yesnod: . Ok ok.. so he's got stage II head work done to the LT4's... but yeah, 306 will have lots of power for you. Like said earlier, idle is going to be really loopy and it definitely won't be a daily driver if you do that, lol. Going to need a good tune and higher idle to keep that vacuum up :yesnod:
Melting Slicks
Joined: Jan 2002
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Re: ?? CC306 and the LT4?? (GlockLT4)
306 should get you to 400rwhp i think... especially if you're at ~370 as it is now. A guy in our club has an LT4 with the 306 and his vette is faster than his viper :lol: :yesnod: . Ok ok.. so he's got stage II head work done to the LT4's... but yeah, 306 will have lots of power for you. Like said earlier, idle is going to be really loopy and it definitely won't be a daily driver if you do that, lol. Going to need a good tune and higher idle to keep that vacuum up :yesnod:
Team Owner
Joined: Apr 2001
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From: Dallas TX
Re: ?? CC306 and the LT4?? (TreyZ28)
306 should get you to 400rwhp i think... especially if you're at ~370 as it is now. A guy in our club has an LT4 with the 306 and his vette is faster than his viper :lol: :yesnod: . Ok ok.. so he's got stage II head work done to the LT4's... but yeah, 306 will have lots of power for you. Like said earlier, idle is going to be really loopy and it definitely won't be a daily driver if you do that, lol. Going to need a good tune and higher idle to keep that vacuum up :yesnod:
ina 396? should be fine. guys are running fine in a 350.. :confused:
ina 396? should be fine. guys are running fine in a 350.. :confused:
You talking about the heads? Heads are from a 396 (which means they flow well).. but his engine is still 350 i assume.... :confused:
[Modified by GlockLT4, 7:01 PM 2/19/2004]
Melting Slicks
Joined: Jan 2002
Posts: 3,159
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Re: ?? CC306 and the LT4?? (GlockLT4)
306 should get you to 400rwhp i think... especially if you're at ~370 as it is now. A guy in our club has an LT4 with the 306 and his vette is faster than his viper :lol: :yesnod: . Ok ok.. so he's got stage II head work done to the LT4's... but yeah, 306 will have lots of power for you. Like said earlier, idle is going to be really loopy and it definitely won't be a daily driver if you do that, lol. Going to need a good tune and higher idle to keep that vacuum up :yesnod:
ina 396? should be fine. guys are running fine in a 350.. :confused: :confused:
You talking about the heads? Heads are from a 396 (which means they flow well).. but his engine is still 350 i assume.... :confused:
[Modified by GlockLT4, 7:01 PM 2/19/2004]
ina 396? should be fine. guys are running fine in a 350.. :confused: :confused:
You talking about the heads? Heads are from a 396 (which means they flow well).. but his engine is still 350 i assume.... :confused:
[Modified by GlockLT4, 7:01 PM 2/19/2004]
Team Owner
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From: Dallas TX
Re: ?? CC306 and the LT4?? (TreyZ28)
He doesn't have a 396 :p: .
I'm going off of the LT4 that i heard (350ci) with the 306... that thing wasn't a daily driver if you ask me :lol: . Something about having to wear ear plugs driving it down the corner :crazy: . That and the idle had a lot of lope. Definitely what I would want out of a race car though :yesnod: .
I'm going off of the LT4 that i heard (350ci) with the 306... that thing wasn't a daily driver if you ask me :lol: . Something about having to wear ear plugs driving it down the corner :crazy: . That and the idle had a lot of lope. Definitely what I would want out of a race car though :yesnod: .
Melting Slicks
Joined: Jan 2002
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Re: ?? CC306 and the LT4?? (GlockLT4)
He doesn't have a 396 :p: .
I'm going off of the LT4 that i heard (350ci) with the 306... that thing wasn't a daily driver if you ask me :lol: . Something about having to wear ear plugs driving it down the corner :crazy: . That and the idle had a lot of lope. Definitely what I would want out of a race car though :yesnod: .
I'm going off of the LT4 that i heard (350ci) with the 306... that thing wasn't a daily driver if you ask me :lol: . Something about having to wear ear plugs driving it down the corner :crazy: . That and the idle had a lot of lope. Definitely what I would want out of a race car though :yesnod: .
it has a lot to do with tuning and exhuast setup as well :yesnod:
Burning Brakes
Joined: Nov 2001
Posts: 1,241
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From: Houston TX
Re: ?? CC306 and the LT4?? (GS345)
the CC306 is amazingly good, considering how bad it is. the ramps are very slow, it has far too much low lift overlap, too much exhaust bias, etc. but it does work. the problem is the hit in drivability, emissions, and fuel economy. for those reasons you should consider something custom that will match the CC306 in outright power, but be better in all the other areas i mentioned.
-michael
-michael
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
Re: ?? CC306 and the LT4?? (MSR)
for those reasons you should consider something custom that will match the CC306 in outright power, but be better in all the other areas i mentioned.
-michael
-michael
and yes....the car is a 350, the heads are from a 396.
jeff
Burning Brakes
Joined: Nov 2001
Posts: 1,241
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From: Houston TX
Re: ?? CC306 and the LT4?? (GS345)
jeff, your quoted numbers help lead me to assume the heads have large chambers, coupled with a stock bottom end (having pistons pretty far in the hole) means the compression is less than 10.5:1 even with the impala gasket.
therefore:
lazer cams #2810416 281/287 228/234 .564"/.557" 108LSA (+4)
even with the 108 lobe separation, the overall duration is a lot less than the 306 and the ramps are steeper, so the driveability is better. the .050" duration is about the same as a CC306. the .200" duration is close to the CC XE 230/236, though, so you'll need good valvesprings. this cam should outpower the CC306 at pretty much any rpm if in a 350 and not something bigger. (maybe even in something bigger.)
milder:
fill out the online form on cam motion's website and see what they recommend. for "disposition," put "4," and make sure you put the full race weight rather than empty weight. or, do the lazer cams imodel i just recommended but have them grind it with 112 degrees of separation.
-michael
therefore:
lazer cams #2810416 281/287 228/234 .564"/.557" 108LSA (+4)
even with the 108 lobe separation, the overall duration is a lot less than the 306 and the ramps are steeper, so the driveability is better. the .050" duration is about the same as a CC306. the .200" duration is close to the CC XE 230/236, though, so you'll need good valvesprings. this cam should outpower the CC306 at pretty much any rpm if in a 350 and not something bigger. (maybe even in something bigger.)
milder:
fill out the online form on cam motion's website and see what they recommend. for "disposition," put "4," and make sure you put the full race weight rather than empty weight. or, do the lazer cams imodel i just recommended but have them grind it with 112 degrees of separation.
-michael
Drifting
Joined: Oct 1999
Posts: 1,722
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From: Gloucester Va
Re: ?? CC306 and the LT4?? (MSR)
OK with all that I've read about this cam stuff I feel :crazy: :crazy: :smash: :banghead:
I plan to use the 306 , but then I hear things like the fast rap speed and so on. Question I have is, how much does engine size effect the "effect" of the cam on idle, and daily use?
I hear it's loopy and bad for a 350, then a 383, or 396 person says It's not bad in my engine. Please help me understand.
Do most agree that this 306 cam is fine for a 383+ engine?
I plan to use the 306 , but then I hear things like the fast rap speed and so on. Question I have is, how much does engine size effect the "effect" of the cam on idle, and daily use?
I hear it's loopy and bad for a 350, then a 383, or 396 person says It's not bad in my engine. Please help me understand.
Do most agree that this 306 cam is fine for a 383+ engine?