Just got my new motor saturday, i bought it from Mystery Bird and i would like to say it was a pleasure doing business with him. He asked all my questions and when i picked up the motor i was surprised to see the motor all wrapped up and on a nice pallet with a frame built to hold the motor in secure. He also tuned a pcm for me which is what i needed. Soo if you see something you want that he is selling i highly reccomend buying it from him. Thanks dave!

Now about the motor cc306 cam, Crane gold race 1.6 rr's, beehive springs i dont remember the lb rating. Bosch 35# injectors, MSD coil. The motor looks to be in good shape and it sounded great on the 4 or 5 videos he made for me. Now the heads are not ported but the 1.6 rr's and springs should make up alittle bit for no porting right ? Also what i have that i'm installing are hooker supercomp longtube headers, 3inch x pipe, 2 magnaflow cats, 2 flowmaster 10 series muffs, the tranny has a 2800 edge stall, and a transgo HD-2 shiftkit, i'm gonna run a 160 t-stat, prob taylor 8.2 thundervolt plug wires, and autolite 104's. I have stock 3.23's Soo what do you guys think about the motor ? what do you think i would run on a dyno? ballpark I know i know this cam is big and people say this cam isn't for stock heads but i dont have the cash for heads right now. And i guess the 2800stall is the smallest to go with for this cam but the stall is brand new and again i dont have the cash. Ohh yeah i have a k&n cai also.

 

If you are going to run the 160* thermostat then you need to program the computer for it if you can't get a tune right now then just run the stock degree thermostat

 

Mystery bird tuned it for me. He set it 20 degress lower for the fan to turn on.

 

Is it a stock bottom end? The biggest issue running the 306 is compression and headflow. You need to bump compression and get a set of ported heads that will match the cams profile. If i were you i would either wait untill you have the cash to buy a set of heads and do it all in one shot. Having your car down twice vs once and forking out more cash for more parts and a tune again. Its ultimatly up to what you want to do but to build it properly and run half decent you need to save for heads so it will actually perform like it should. If you do run it without heads opt for a thin head gasket if the block hasnt been decked to raise compression from stock form which will help you a bit. Not trying to bash you im just trying to save you money and not be dissappointed when you do all the work and it performs like crap. Some words of advice is all

 

Yeah i believe it is the stock bottom end. Ohh no i know your not trying to bash me, i'm defently listening to your advise. I still like to get a set of LE1 heads, the LE2'S are too expensive. I was going to buy the LE1 package before i bought this motor but i got the motor. I really should get some heads. Soo will ported heads be all i need ? plus another tune ? Do you see any other concerns ? thanks

 

You want to try and bump compression either by milling the heads down a smaller cc and thinner head gasket. You should be able to get some ported stocker in a milled 52-55cc head and mated with a bbody gasket which is a 0.029 should put you in the 11.5:1 compression range which is a full point bump over stock. You can find LE2s for sale in the for sale section from time to time. LE1s have been proven to work with the 306 cam go look on youtube theres a guy running that setup and running in the 11s. I would highly suggest if you have the motor out of the car to replace the rod bolts with ARP hardware just for precautions and its cheap reassurance.

 

My car made 353 rwhp with a cc306 cam back in the day with stock heads,throttle body and water pump. Trapped 114 in the 1/4

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yeah my car is going to be sitting in my garage till mid spring soo i got plenty of time to save up for heads, but i have my mind set on LE1 heads. I will look into ARP rod bolts.

Saint69 those are some good numbers for stock heads. I saw a video on youtube with the cc306 & stockheads make similar #'s I am guessing running a cc306 and ported heads isn't really mandatory. I'm just going to go with heads because the motor is already out.

 

Should hit right at 400 rwhp with some good ported heads and supporting mods

 

What is the intended use as a street car with ocassional track use or track only? The cam makes 353rwhp but it doesnt start making power till you hit like 3500-4k which will be a dog on the street an by the time you hit that rpm your likely going to be fetching tickets and loosing races. That cam needs to breathe to be able to make decent lowend grunt on the street if thats what you intend to do with it. Like i said its up to you but you need heads to match that cams profile to make it actually work like it should be then half assing it and wondering why it makes no power on the street.

 

How much time is actually spent under 3500 RPM's except for cruising? He has a quality 2800 stall, from there to 3500 isn't much. Yes, I agree that the throttle response may be a little doggy but I really don't think it's going to be as bad as everyone makes it out to be.

 

I would be looking for more rear gear with that cam. As xxsaint69x posted, the motor will make power in it's current form. Of course there is always more to be had. Good luck,

Larry

 

it has been proven many times back in the day that CC306 and GM847 are NOT TOO BIG for stock heads and put down good DYNO numbers as well as TRACK numbers. \
Not to mention CC306 LOVES nitrous.

 

If you can get the heads ported a bit and milled you will be helping yourself out a ton. buy the Impala head gaskets and your stock 10.4.1 will roughly be at 11.1.

having .010 taken off the heads would help too.

 

I plan on getting 3.73's anyways soo i think that will help me alot.