LT1-LT4 Modifications 1993-97 Gen II Small Block V8

cc503 vs gm846 stock heads help me decide

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Old 06-24-2010, 01:47 AM
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Default cc503 vs gm846 stock heads help me decide

well the time has come already and im saving up 1500 and dropping my trans and motor out the bottom getting a edge 2800 stall and trans built and getting a trans cooler temp gauge while the motor is out im going to cam it and get a set of comp 1.6 rollers and im am deciding what cam to get a cc503 for $240 or a gm846 for ... I dont how much know because I havnt been able to find one but it looked like a great size for stock heads soon to get a port and polish anyway heres the cam specs and if anyone can find one for me please add a link
right now im think im gonna get the cc503
cc503: (224/230 .537/.544 112lsa)


GM846: (222/230 .543/.563 112lsa)

Last edited by subliminal; 06-24-2010 at 01:24 PM.
Old 06-24-2010, 03:44 AM
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here is the link for the GM846 new part no. @ summit
http://www.summitracing.com/parts/NAL-19210723/
Old 06-24-2010, 12:14 PM
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Originally Posted by monster81
here is the link for the GM846 new part no. @ summit
http://www.summitracing.com/parts/NAL-19210723/
thanks do you know anyone that runs that cam I see that you have the 847 isnt that a to big for stock heads
Old 06-24-2010, 12:21 PM
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Run the 503. I ran it for 2 years and loved it. 355ci, full bolt-ons, cam only and a 6 speed I made 351rwhp and 356rwtq. Loved the power curve and the drive ability.

I've heard nothing but good things from anyone that runs the 503. I haven't heard any response about the 846.
Old 06-24-2010, 12:25 PM
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Your not going to do all that with 1500...
Old 06-24-2010, 01:31 PM
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Originally Posted by gregrob
Your not going to do all that with 1500...
I think can heres the list I already have new bearings and springs etc


trans built locally with I know the guy hes been doing it for 30 years $400.00
edge stall $330.00
trans cooler $50
trans temp gauge $70.00
cc503 $240.00
cc rollers rocker $180.00
random stuff for the jobs another $100

total around $1370.00 plus tune ounce I find a good tuner

Last edited by subliminal; 06-24-2010 at 02:25 PM.
Old 06-24-2010, 02:04 PM
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Valve springs, push rods, guide plates, timing chain, gaskets set, etc...

What kind if cheapo rockers are 180?
Old 06-24-2010, 02:09 PM
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The difference of power and drivability between the GM846 and the cc503 will be negligable so I would grab whichever one you can obtain the cheapest.
Old 06-24-2010, 02:22 PM
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Originally Posted by gregrob
Valve springs, push rods, guide plates, timing chain, gaskets set, etc...

What kind if cheapo rockers are 180?
these cheap ones Im not building a drag car its a DD http://www.jegs.com/i/Comp+Cams/249/1418-16/10002/-1 only im getting them from D&E they dot have a online catalog yet but there cheaper so is the cam
Old 06-24-2010, 02:27 PM
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Originally Posted by StealthFormula
The difference of power and drivability between the GM846 and the cc503 will be negligable so I would grab whichever one you can obtain the cheapest.
thats the answer I was looking for im gonna a go with the cc503
Old 06-24-2010, 05:50 PM
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Whenever modding a car budget for double of what you think it's going to cost and you might get close to an accurate estimate.
Old 06-24-2010, 05:57 PM
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iam runnnign the cc503 in my 94 m6 love it sounds like a beast..i got 327wrhp with a bad opti on got to pull the car to 5800 before it cut out...your gunna lose a little bottom end from the cam but u will gain ir back on the top end...i would also look into getting an electric cut out..i gain 15wrhp from it..lol let it breath. iam also on stock heads and intake too..great cam btw and dont forget the price of the gaskets and stuff..
Old 06-24-2010, 06:07 PM
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Originally Posted by subliminal
these cheap ones Im not building a drag car its a DD http://www.jegs.com/i/Comp+Cams/249/1418-16/10002/-1 only im getting them from D&E they dot have a online catalog yet but there cheaper so is the cam
If it's a DD you want to be even more reliable. I sometimes drive my car 4-5hrs from home, and I dont worry about the valvetrain because I used quality components.

You're also using a terribly cheap stall which will probably kill the trans in short order. But if it's just a toy and you have another car to drive if it dies, by all means go ahead.
Old 06-24-2010, 08:02 PM
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I have the cc503 and like it! sounds good. I have not really gotten to appreciate the power gain b/c i still have the stock tune.

It put down 290rwhp/302rwtq with everything in my sig. Keep in mind this is the bone stock tune. Is it robbing me of that much???

not trying to your thread OP..
Old 06-24-2010, 08:53 PM
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$400 for your tranny sounds a whole lot like a bone stock overhaul with a few important steps missing.

At the moment, your eyes are a bunch bigger than your budget. If you want to avoid reliability problems, scale back now.
Old 06-25-2010, 02:01 AM
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Originally Posted by mean_greenZ
I have the cc503 and like it! sounds good. I have not really gotten to appreciate the power gain b/c i still have the stock tune.

It put down 290rwhp/302rwtq with everything in my sig. Keep in mind this is the bone stock tune. Is it robbing me of that much???

not trying to your thread OP..
looks like we almost got the same parts..but i got underdrive pulley and a tune on a messed up opti and i made about 37 more rwhp at only 5800 rpm i would say tune that **** and let it run..lol because the underdrive didnt do all that..
Old 06-25-2010, 03:52 AM
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Originally Posted by subliminal
thanks do you know anyone that runs that cam I see that you have the 847 isnt that a to big for stock heads
yup its quite big but i had plans for bigger heads.TBH driveability isnt really that good with this cam. since plans changed i saved the heads for my 383 block, and now im actually in the process to swap cams to the CC503 so i could drive my car to work from time to time like i used to. im pretty much done now, im only waiting for my OTVC from CCPerformance and ill be ready to fire her up in about few days



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