View Poll Results: GM 847 or CC306 cam??
GM 847
60
57.14%
CC306
45
42.86%
Voters: 105. You may not vote on this poll
Gm 847 Vs. Cc306
Thread Starter
On The Tree
Joined: Nov 2006
Posts: 181
Likes: 0
From: Corsicana, TX
okay...im taking you guys advice. Im going to go with a custom grind. But i dont know where to go from here...i dont know what i need to get first or which is more important....buying new heads is definatley out of the question for the time being. But i can get my stockers ported and polished. What kind of valvetrain am i going to need with a custom grind....i guess this is why i wasnt really sure about getting a custom grind..i wasnt too sure about all of the unkowns i had to deal with. 
. but i am definatley am going with a custom grind....just gonna need you guys help on helping me set it up..if you dont mind 
. but i am definatley am going with a custom grind....just gonna need you guys help on helping me set it up..if you dont mind
Originally Posted by ZEX-Z
Where do you get the GM 847 cam at and the CC306 at. I had a hard time finding these cams when I bought my XFI Extreme energy cam with .584/.579" lift @292/300 duration.
CC306 - http://store.summitracing.com/partde...5&autoview=sku
GM847 - http://store.summitracing.com/partde...5&autoview=sku
TECH Junkie
Joined: Nov 2003
Posts: 3,265
Likes: 1
From: CHITOWN
Originally Posted by Hot94Z28
I would still say a custom ground. But I think the 847 would be to big for a 350 with untouched heads?
I really dont think of that cam as even being a big cam"
Decent sized, but not big at all
TECH Junkie
Joined: Nov 2003
Posts: 3,265
Likes: 1
From: CHITOWN
Originally Posted by 383_LT1_1295
okay...im taking you guys advice. Im going to go with a custom grind. But i dont know where to go from here...i dont know what i need to get first or which is more important....buying new heads is definatley out of the question for the time being. But i can get my stockers ported and polished. What kind of valvetrain am i going to need with a custom grind....i guess this is why i wasnt really sure about getting a custom grind..i wasnt too sure about all of the unkowns i had to deal with. . but i am definatley am going with a custom grind....just gonna need you guys help on helping me set it up..if you dont mind
. but i am definatley am going with a custom grind....just gonna need you guys help on helping me set it up..if you dont mind Talk to the higher Hp/ Fast 1/4 mile LT1 guys on here, they will show your were to go and who to talk to. When I was going to do my LT1 car they were good help to me...
But I have a LS1 now
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Joe O.
Brett Bauer
Lloyd Elliot
Futural Motorsports
Search for these names, they all have proven great results with custom cams.
Damn Brett hearing all of these stories is making me worried about spinning the stock rebuilt shortblock to 6800...it only has 9k miles at least though
Brett Bauer
Lloyd Elliot
Futural Motorsports
Search for these names, they all have proven great results with custom cams.
Originally Posted by BRETTINATOR
ahhhh...gotcha...don't feel bad I wasn't either...lasted a whopping two hours on mine...but they were a fun two hours with that 86000 mile engine. You are correct 6k was about the limit, guess I was lucky with the rebuilt engine but it still threw a rod year later...damdest thing too...leaving the BLOCKBUSTER doing 40mph and she puked 
her guts out and was in a coma for 2 years 
her guts out and was in a coma for 2 years 
Originally Posted by lt197formula
Damn Brett hearing all of these stories is making me worried about spinning the stock rebuilt shortblock to 6800...it only has 9k miles at least though
Originally Posted by BRETTINATOR
dude I didn't even know you could spin a stock shortblock that high without a hellacious cam...I'm impressed if there are some doing it, guess it's possible with the right stuff though. I'm launching @6300 ~ 6500 and supposed to be shifting around 75-7800 but the stock pcm dies @6900 on my heap...so the FAST should help me there when I get around to getting that or BigStuff or whatever I go with. Either way I think you'd be fine with the low engine mileage on her.
I thought the stock pcm cutoff fuel at 7200? When will you be getting the new fuel system?383 LT1 Sorry for the thread jack even though I think you already got the info you needed.
Are these good springs to use for an Lt1 stroker with the CC 306 and ported heads?
Comp 914
Outside Diameter of Outer Spring (in): 1.489 in.
Coil Bind Height (in): 1.100 in.
Damper Spring Included: No
Spring Rate (lbs/in): 367 lbs./in.
Inside Diameter of Outer Spring (in): 1.125 in.
Inside Diameter of Inner Spring (in): 0.819 in.
I already have the CC 306, its a good OTS cam and is widely used, thus good tuning is available, but custom are always preferred, as they are more easily suited to individual needs. As for my spring question, I only ask because I have all these mis-matched parts and want to have to buy as little new stuff as possible.
Comp 914
Outside Diameter of Outer Spring (in): 1.489 in.
Coil Bind Height (in): 1.100 in.
Damper Spring Included: No
Spring Rate (lbs/in): 367 lbs./in.
Inside Diameter of Outer Spring (in): 1.125 in.
Inside Diameter of Inner Spring (in): 0.819 in.
I already have the CC 306, its a good OTS cam and is widely used, thus good tuning is available, but custom are always preferred, as they are more easily suited to individual needs. As for my spring question, I only ask because I have all these mis-matched parts and want to have to buy as little new stuff as possible.
Last edited by Superbeasst; Dec 14, 2006 at 02:44 PM.
on a stock-headed car i would go with a cc503. it is very streetable and makes good power. i think with the cc306 or gm847 would be too much for stock heads. i'm not saying they wouldnt make good power but probably not much more, if any, than the cc503. just my personal experience.
Originally Posted by LALT1
I happen to be partial to the CC306 myself.
TIMES????
I hate to see folks say things work for them when they fail to back that up.
Seen guys with strokers running 13s that thought the combo was "working" for them
.I know this is an OLD thread but I have to agree with the guys saying go MUCH smaller, the baby Lingenfelter grind Ellis mentioned probably being best mentioned.
What do I know though I just insist on RESULTS rather than falling into the same old mistakes everyone else loves to make.
I know two local guys with big cams stabbed in stock shortblock LT1s both M6 f-bodies one an actual 306 cam the other was a high lift 230/236, both stock heads. Both 4.10s, both guys got tired of it after the first summer, one sold the car and the other bought a second car so he could again enjoy driving an f-body and the cammed one became a garage queen.
The cam I run is 503ish duration BUT I increased compression which helps offset some of the negatives of a bigger cam.