What cam would be best? [Archive] - Team Camaro Tech

: What cam would be best?


bld22663
Jul 13th, 09, 12:38 PM
I have done some research and now I am confused as to which cam I should install in my basically stock 327. I am running 245 60's on the rear but I am not sure what the gear ratio is. I do know that this was a bone stock column shift automatic with matching #'s when I bought it. It now has a 4 barrell with headers and the PG has been replaced with a Turbo 350. All I want to do is gain a little more low end horse power/torque with that sweet sound. I will not be street racing though. Based on what I have read, I understand that I have to be careful on my selection due to the fact that I have power brakes and the wrong cam will greatly reduce my vacuum or shove the valves down into the pistons. Can anyone tell me if the cam specs below would work best for what I am looking for?

Duration .228/.228 Lift .480/.480 LSA 112

Any advice would be greatly appreciated.

67 Plum
Jul 13th, 09, 01:06 PM
Duration .228/.228 Lift .480/.480 LSA 112



That cam is to big for your application.You need one around 218 @ .050 and .450 lift.Like this
http://www.summitracing.com/parts/CCA-K12-206-2/

or

http://www.summitracing.com/parts/CCA-CL12-210-2/

TJS69
Jul 13th, 09, 01:21 PM
I agree with Chad. The 2nd cam he listed is the 268, and that would be the largest, that I would go with. For mostly stock, the 256 or 260 would be good. Even with the 268 you should have 8.5:1 compression and a higher than stock stall converter.

bld22663
Jul 13th, 09, 01:41 PM
Chad,

Would this cam provide a little more power along with decent sound?
Thanks,

.Bad75.
Jul 13th, 09, 01:59 PM
That cam profile sounds like the one in the 290hp 350 gmpp crate engine. It wont sound stock.

67 Plum
Jul 13th, 09, 03:13 PM
Chad,

Would this cam provide a little more power along with decent sound?
Thanks,

Booth of those cams will add power and have a noticable idle.The 2nd cam will have more sound at idle than the 1st one.Do you still have the 2 barrel heads on you engine? If so the problem is not enough compression.A larger cam that has a real aggressive idle needs more compression to not kill the low end torque.It would sound great but not have as much power as the stock cam down low.

bld22663
Jul 13th, 09, 04:14 PM
Chad,

Would the second cam work if I do still have the 2 barrel heads? Also, would there be a noticeable power loss? I don't want to go backwards just to gain that hot rod sound. I don't know much about the engine other than it is an MO code that translates to a 210 HP 327 according to my Motors Manual.

67 Plum
Jul 13th, 09, 05:17 PM
Chad,

Would the second cam work if I do still have the 2 barrel heads? Also, would there be a noticeable power loss? I don't want to go backwards just to gain that hot rod sound. I don't know much about the engine other than it is an MO code that translates to a 210 HP 327 according to my Motors Manual.

Might want to check that code again MO is a 302. http://www.camaros.net/years/68/68codes.html You would gain enough in midrange and top rpms. to make up for anything lost down low.A head swap in the future would really wake it up.

pdq67
Jul 13th, 09, 05:27 PM
You sure about the "MO" code? I kinda doubt it??

Post back what it is b/c if you have a 210hp/327, you are just a topend switch away along w/ .020" thick steel shim headgaskets from a 275 and 300hp/327 engine.

Get her up to 9.75 to 1 or so and then install the 268HE hy-cam mentioned earlier.

pdq67

bld22663
Jul 13th, 09, 07:20 PM
My mistake guys...It is an ME code 327. Will the second cam listed be a good choice?

67 Plum
Jul 13th, 09, 07:32 PM
My mistake guys...It is an ME code 327. Will the second cam listed be a good choice?

Did some looking around get this cam its between the two comp. cams and is cheaper.I buy all of my engine parts from them good company to deal with.


Elgin, Hyd. Flat Tappet Cam & Lifter Kit, Chev SB, .454/.454
Chev SB
Lift: .454/.454
Adv. Duration: 272/272
Duration @ .050": 216/216
Lobe Center: 110
1500-5500, Noticeable idle, Stock converter OK

http://www.competitionproducts.com/prodinfo.asp?number=E1065PM

67 Plum
Jul 13th, 09, 07:33 PM
My mistake guys...It is an ME code 327.

To bad a MO coded block would have sold for enough to build you a nice engine.

bld22663
Jul 13th, 09, 07:38 PM
I know...I guess I was day dreaming when I read the code...or there was just too much paint in the letters.

bld22663
Jul 13th, 09, 07:43 PM
Would this one work also?
http://www.summitracing.com/parts/SUM-K00052/

TJS69
Jul 13th, 09, 07:48 PM
That's probably the same cam. It should work good for you.

67 Plum
Jul 13th, 09, 07:53 PM
Would this one work also?
http://www.summitracing.com/parts/SUM-K00052/

Yes but the Elgin is $30 cheaper and I bet they grind the Summit cam.

bld22663
Jul 13th, 09, 08:03 PM
[QUOTE=TJS69;1250640]I agree with Chad. The 2nd cam he listed is the 268, and that would be the largest, that I would go with. For mostly stock, the 256 or 260 would be good. Even with the 268 you should have 8.5:1 compression and a higher than stock stall converter.

I am still confused because in the quote are you saying that I should be using a stall converter other than stock? Also, the cheaper cam that Chad listed is a 272.

67 Plum
Jul 13th, 09, 08:10 PM
[QUOTE=TJS69;1250640]I agree with Chad. The 2nd cam he listed is the 268, and that would be the largest, that I would go with. For mostly stock, the 256 or 260 would be good. Even with the 268 you should have 8.5:1 compression and a higher than stock stall converter.

I am still confused because in the quote are you saying that I should be using a stall converter other than stock? Also, the cheaper cam that Chad listed is a 272.

If you look at the .050 duration numbers it is 216 for the 272 cam and 218 for the 268 cam.You have to look at the .050 numbers not the advertised duration.The 272 is a little smaller than the 268.I don't feel you will need a higher stall converter.

bld22663
Jul 13th, 09, 08:20 PM
I will most likely purchase the Summit cam only because I have a $25 gift card that I need to use. I really appreciate all of the very useful information that each one of you have provided.

67 Plum
Jul 13th, 09, 08:28 PM
I will most likely purchase the Summit cam only because I have a $25 gift card that I need to use. I really appreciate all of the very useful information that each one of you have provided.

See you didn't tell us that. :thumbsup: That changes everything.

TJS69
Jul 13th, 09, 09:43 PM
If you go LARGER than a 268 you would want a higher stall converter (recommended). As Chad was saying, also compare the @ .050 numbers. You should be OK with that 272 as it is only 216 @.050. The lift is also only.454. :) PDQ67, also recommends higher compression with cams that large. :)

TJS69
Jul 13th, 09, 10:06 PM
Actually, I feel that 272 cam is going to be too big. You just don't have the compression. I think a copy of GM's 300 Hp cam would be a good one.

http://www.summitracing.com/parts/CCA-K12-670-4/

or http://www.summitracing.com/parts/SUM-K00032/

There are so many different cams to choose from. With those small valve heads and low compression, stay down to about a 256 or 260. Those 1.72 intake valves, just don't cut it.

67 Plum
Jul 14th, 09, 06:17 AM
Forgot to tell you but when you change the heads to some 64cc ones to bring up the comp. and get larger valves (you will trust me) the 272 cam will really wake up.When you get tired of that go ahead and build a 400.Don't do a 350 or 383 they won't have enough HP.If you want to avoid all of the engine building and swapping LEAVE it alone now before you get started.Horsepower is worse than crack.Once you get started you can't get enough.