Finally some track times out of or EFI connections set-up
07-13-2011, 12:29 PM
#21
The 306 is not a good cam for a stock headed, stock cube car that wants to only spin to 6300 rpms. This is none of those things.
On a better dialed in build with much better heads and more cubes, it does surprisingly well for what it is - an aging, lazy lobe
.
Out of curiosity, have the AFRs been touched up or are they out of the box? Looks like with a proper stall 10s will be in the bag - impressive for an ancient shelf grind.
LOL.
On a better dialed in build with much better heads and more cubes, it does surprisingly well for what it is - an aging, lazy lobe
.Out of curiosity, have the AFRs been touched up or are they out of the box? Looks like with a proper stall 10s will be in the bag - impressive for an ancient shelf grind
.LOL.
07-13-2011, 12:54 PM
#22
Village Troll 
iTrader: (2)
The 306 is not a good cam for a stock headed, stock cube car that wants to only spin to 6300 rpms. This is none of those things.
On a better dialed in build with much better heads and more cubes, it does surprisingly well for what it is - an aging, lazy lobe.
Out of curiosity, have the AFRs been touched up or are they out of the box? Looks like with a proper stall 10s will be in the bag - impressive for an ancient shelf grind.
On a better dialed in build with much better heads and more cubes, it does surprisingly well for what it is - an aging, lazy lobe
.Out of curiosity, have the AFRs been touched up or are they out of the box? Looks like with a proper stall 10s will be in the bag - impressive for an ancient shelf grind
.
LOL.
Last edited by SS RRR; 07-13-2011 at 01:04 PM.
07-13-2011, 02:40 PM
#24
Actually, ANY properly thought out and designed cam will work perfectly well in a build that is optimized for it's characteristics. With that being said, the problem with the cc306 is the requirements it needs to produce good results.
A lot of other cams do much better in covering lackluster flow performance, or unoptimized header sizes/primary lengths, or any other host of other issues.
Key is, get the combo right and any well designed cam will show what it can do.
Personally the cc306 is such a nutter of a cam it is hard to recommend it, it is harder than some other cams to get the tune right, and it is even harder to pick all the proper parts to get it to run at it's potential. But, that is not to say I haven't tuned some well built setups that use the cc306, from stock 350 shortblocks, to 355s and even 383s (the one 396 I tuned with one just was a dog, so I can't say 396s) and once the right matched parts were used with it, it performed.
Doesn't help that Comp Cams back in the late 90s had a HUGE issue with off-the-shelf grinds for LT1s. They had a ton of cams go out where the lobes were twisted down the cam. I personally diagnosed 9 bad Comp Cams cams back then and once they were rolled on a Cam Doctor they all had the same issue, the lobes twisted off thier centerlines going down the cam (so if you degreed the first few lobes it was OK, but by the time you got to the lobes for #8 it was way off where it should have been).
I have little doubt that a lot of these "bad cams" where to blame for a ton of problems people had, including lack of performance... Sad part is, how many people switched cams and sold off the "bad cam" and just bitched and moaned it sucked. I am certain that there are some of these "bad cams" still floating around out there, as I diagnosed a car 3 years ago where the guy couldn't get it right, once with a cc305 and then with a cc306. I told him to get both rolled and sure enough both were twisted going down teh cam. He put in a buddy of his "extra" LT4 HOT cam and couldn't be happier that the car ran as well as it did at the time.
A lot of other cams do much better in covering lackluster flow performance, or unoptimized header sizes/primary lengths, or any other host of other issues.
Key is, get the combo right and any well designed cam will show what it can do.
Personally the cc306 is such a nutter of a cam it is hard to recommend it, it is harder than some other cams to get the tune right, and it is even harder to pick all the proper parts to get it to run at it's potential. But, that is not to say I haven't tuned some well built setups that use the cc306, from stock 350 shortblocks, to 355s and even 383s (the one 396 I tuned with one just was a dog, so I can't say 396s) and once the right matched parts were used with it, it performed.
Doesn't help that Comp Cams back in the late 90s had a HUGE issue with off-the-shelf grinds for LT1s. They had a ton of cams go out where the lobes were twisted down the cam. I personally diagnosed 9 bad Comp Cams cams back then and once they were rolled on a Cam Doctor they all had the same issue, the lobes twisted off thier centerlines going down the cam (so if you degreed the first few lobes it was OK, but by the time you got to the lobes for #8 it was way off where it should have been).
I have little doubt that a lot of these "bad cams" where to blame for a ton of problems people had, including lack of performance... Sad part is, how many people switched cams and sold off the "bad cam" and just bitched and moaned it sucked. I am certain that there are some of these "bad cams" still floating around out there, as I diagnosed a car 3 years ago where the guy couldn't get it right, once with a cc305 and then with a cc306. I told him to get both rolled and sure enough both were twisted going down teh cam. He put in a buddy of his "extra" LT4 HOT cam and couldn't be happier that the car ran as well as it did at the time.
07-13-2011, 05:39 PM
#25
haha idle is a little more then low! whats it at? 6-700? lol my old cc306 used to sound like that when i first fired it up in the morning, lucky if she ran for 1-2 minutes befor dieing lol.
Id also take a 1.67 60' lol, that aint bad in my book!
very cool lt1
Id also take a 1.67 60' lol, that aint bad in my book!
very cool lt1
07-15-2011, 01:51 PM
#28
Good times, glad your posting progress, I like seeing where a car came from rather than just an end results. Good luck to you. Better cams out there than the CC306, but I wouldn't say it's a horrible choice. I am running it in my LT1, stock bottom end. When I pit the 398 in I'll go custom, but for this set up it's fine.
Chris B's Z28 ran 11.30@121, stock bottom end, GTP LT4 Heads and a CC306. Maybe SS RRR remembers, but I don't think that car was any thing particularly light weight either? He also made like 417rwhp through a 9" from what I recall. Some of the custom stuff makes more, but his times were really respectable then and now for H/C car.
Chris B's Z28 ran 11.30@121, stock bottom end, GTP LT4 Heads and a CC306. Maybe SS RRR remembers, but I don't think that car was any thing particularly light weight either? He also made like 417rwhp through a 9" from what I recall. Some of the custom stuff makes more, but his times were really respectable then and now for H/C car.
Last edited by BizZzatch350; 07-15-2011 at 02:01 PM.
07-15-2011, 02:24 PM
#29
Good times, glad your posting progress, I like seeing where a car came from rather than just an end results. Good luck to you. Better cams out there than the CC306, but I wouldn't say it's a horrible choice. I am running it in my LT1, stock bottom end. When I pit the 398 in I'll go custom, but for this set up it's fine.
Chris B's Z28 ran 11.30@121, stock bottom end, GTP LT4 Heads and a CC306. Maybe SS RRR remembers, but I don't think that car was any thing particularly light weight either? He also made like 417rwhp through a 9" from what I recall. Some of the custom stuff makes more, but his times were really respectable then and now for H/C car.
Chris B's Z28 ran 11.30@121, stock bottom end, GTP LT4 Heads and a CC306. Maybe SS RRR remembers, but I don't think that car was any thing particularly light weight either? He also made like 417rwhp through a 9" from what I recall. Some of the custom stuff makes more, but his times were really respectable then and now for H/C car.
.A lot of the "sub par" shelf cam builds often have local shop ported, self ported, or stock heads. Give the same setup a respectable cylinder head (AI, LE, LPE, GTP, etc) and I bet they will pick up a ton.
I made the mistake of trusting no-name ported heads too on my last build...live and learn.
