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Old 05-23-2009, 05:25 AM
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whats the best cam for 327 engine

I have a 327 the exhaust lifter wont stop ticking I am thinking of just changing the cam and lifters, Here is what I know about the engine, It has stock heads, holley 600 carb, 350 trans
I am looking for a nice sounding cam i'm thinking of a lunati bracket master 11
230/230 .465/.465 .50 is this good or should I go for more or less lift?

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Old 05-23-2009, 09:24 AM
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Tick Tock

Are you absolutley sure it's a lifter? I've had guys chasing around what they though was a collapsed lifter, and all it turned out to be was an exhaust leak. That cam aughtta work, but I'd almost say start with a new batch of lifters if the cam that's in it is still good. (Be sure to use a high Zinc oil addative on break in no matter what you wind up doing, I've destroyed a cam or two in ten minutes all because I forgot the zinc.)
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Old 05-24-2009, 08:02 AM
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Quote:
Originally Posted by Speedshift_Sam
Are you absolutley sure it's a lifter? I've had guys chasing around what they though was a collapsed lifter, and all it turned out to be was an exhaust leak. That cam aughtta work, but I'd almost say start with a new batch of lifters if the cam that's in it is still good. (Be sure to use a high Zinc oil addative on break in no matter what you wind up doing, I've destroyed a cam or two in ten minutes all because I forgot the zinc.)
I tried to adjust the lifter it stops ticking then starts ticking in about 5 minuites, The engine has a stock cam sounds toooo boring that is why I fiqure while I am pling things off the engine I might as well just change the cam,
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Old 05-24-2009, 08:08 AM
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which stock 327 is it?
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Old 05-25-2009, 07:00 PM
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Quote:
Originally Posted by va4cqd
which stock 327 is it?
I was told it was out of a corvette but who knows it has a 4 bolt main aluminum pistons and here are pictures of the heads # 338882
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Old 05-25-2009, 07:07 PM
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If your going to get a new cam get lifters to go along with it. All the major cam companies recommend on flat tappet cams anytime you put in either new cam or lifters they both have to mate together. Also as above make sure you use a zddp oil additive. That cam is somewhat on the big side. Since you have stock stuff still I would go with a 220@ 50 duration so you can get a little lope at idle and still have somewhat of a cam to go with what you currently have.
Eric
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Old 05-25-2009, 07:32 PM
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882s are large chamber 70s smogger heads. if you really have a 327, someone put those heads on.
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Old 05-25-2009, 09:32 PM
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...........and if it really does have 327 c.i. then its a 350 4 bolt block with a large journal 327 crank. Whats the casting number on the back of the block?
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Old 05-25-2009, 09:33 PM
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Quote:
Originally Posted by watchdude1
I was told it was out of a corvette but who knows it has a 4 bolt main aluminum pistons and here are pictures of the heads # 338882
If you want an idea of what the original application was, check the suffix code located at the front passenger side of the engine block. There's a small pad there w/an alphanumeric code. The suffix will look like CNF or CMT (just examples).

As was said, those are nondescript 76cc combustion chamber smog-era heads, complete w/exhaust rotators. Nothing special, although they might have come on 'Vette's of that era.

They do have hardened seats IIRC, and accessory holes for use w/the long water pump set-up.

I have a ported set w/2.02 x 1.60 valves, that I've still never gotten around to using.

Last edited by cobalt327; 05-25-2009 at 09:39 PM.
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Old 05-26-2009, 02:39 AM
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Choosing a proper cam can be one of the hardest things to do. Many questions have to be asked.

What gears do you have in the rear?

The CC of the heads, also those 882 heads you have on there are junk, if you can get rid of them for some older heads. 882 heads are known for cracking in the combustion chamber.

What is the stall speed of the converor?

Also the weight of the car/truck. If I were you I would get on the phone with the cam company you plan on using. They have way more experience in choosing the proper cam to the application
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Old 05-26-2009, 02:20 PM
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Quote:
Originally Posted by 327NUT
...........and if it really does have 327 c.i. then its a 350 4 bolt block with a large journal 327 crank. Whats the casting number on the back of the block?
the # is gm 3970010 plus k 10 towards back
could it be a 350 I am going by what the previous owner told me?
I ordered a comp cam and lifters from summitt for a 327. do 350s us the same size cams? never did a cam swap before hope I can do this.

Last edited by watchdude1; 05-26-2009 at 02:22 PM. Reason: mis spelling
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Old 05-26-2009, 02:27 PM
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Quote:
Originally Posted by BugRod
Choosing a proper cam can be one of the hardest things to do. Many questions have to be asked.

What gears do you have in the rear?

The CC of the heads, also those 882 heads you have on there are junk, if you can get rid of them for some older heads. 882 heads are known for cracking in the combustion chamber.

What is the stall speed of the converor?

Also the weight of the car/truck. If I were you I would get on the phone with the cam company you plan on using. They have way more experience in choosing the proper cam to the application
I have a 1930 ford coupe It has a 350 turbo trans don't know stall speed it never stalled or cut out when I got on it maybe it dose not have a stall speed
the engine is apart how can i tell if it has a stall converter you need to punch it and see if it cuts out at 2,500 or 3,500 rph right?
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Old 05-26-2009, 03:23 PM
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The block you have is most likely a late model 350, since the heads came from the same. All sbc chevies of that type use the same cam. Knowing the stall sped and the rear end ratio is important. Having too tight of converter can hold back the engine and not let the engine rev properly. Also the rear end being too high or too low can stop you from running the engine in the rpm range that will be usable. My drag car (H/SA stocker) runs a 5:38 gear with a 4500 stall speed converter, I leave at 3800 and shift at 6200 and go thru the lights at 6800. Everything is balanced to keep the engine in the highest HP and torque range.

Can you PM or post here the cam that you chose
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Old 05-27-2009, 06:14 PM
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Quote:
Originally Posted by cobalt327
If you want an idea of what the original application was, check the suffix code located at the front passenger side of the engine block. There's a small pad there w/an alphanumeric code. The suffix will look like CNF or CMT (just examples).

As was said, those are nondescript 76cc combustion chamber smog-era heads, complete w/exhaust rotators. Nothing special, although they might have come on 'Vette's of that era.

They do have hardened seats IIRC, and accessory holes for use w/the long water pump set-up.

I have a ported set w/2.02 x 1.60 valves, that I've still never gotten around to using.
The front suffix is k05 02 tjz
the heads have different #s on them
driver side 998882
passenger side 399892
why do they have different #s is that normal?
engine # 390010
is this engine a 350 not a 327 like the previous owner told me?
I ordered a cam for a 327 is it the same as a 350 cam?
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Old 05-27-2009, 06:36 PM
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K St. Catherines, Ontario engine plant
0502 assembled May 2
TJZ 1973 350 Truck 155hp TH 350 4-Brl C10 & C20

someone must have changed one of the heads at some point.
you basically have a low compression, smogger 350
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