Like You Need Another Cam Question...

[Al K]

...But here goes...

I've got two choices for the ol' 413 and would like opinions,please.

The mill:
'64 Chrysler 413,unknown miles,originally 340hp version.
2.08"/1.60" valve heads
I'd guess about 9.5:1 CR still.
750 Holley vac. carb,as built jetting
Edelbrock Performer 440 intake
1-3/4" headers,full exhaust,no crossover/"x" pipe

Stock stall converter
3.55 gear,29" tire

My choices:

TRW TP-203

INT EXH
Lift .443 .465
Duration(adv.) 288 deg 295 deg
Overlap 69 deg
Lobe centers 107 deg 117 deg
Opens 0 deg (TDC) 49 deg BBDC
Closes 34 deg ABDC 5 deg BTDC

Lots of duration there,and I ain't changing converters now. Hmmm...


The other: Cam Dynamics 15209

The only specs I have are: Duration @ .050": 216 degrees
Lift: .455"

These specs are for both intake and exhaust. I have no other specs for this,and I've looked. Crane makes a very similar cam(yes;I know they bought CD's tooling) in their Energizer series,but I haven't been able to find other specs for it.

I'm just looking for something to get me through next year,or until the 440 gets together. I'm thinking the TRW might have too much duration for a stock converter,but...? I do like the dual-pattern specs,though,especially with the small exhaust valves. I've got the TRW in there now;was getting ready to start the degree process,and figured I'd seek professional help first-like from you guys! As always,thanks!!!

 

[383man]

For that combo I would go with the Cam Dynamic's 15209 cam. Ron

 

[lewtot184]

the duration numbers on the trw cam probably include the opening and closing ramps. there is a "magnum" cam profile out there that is ground on 112lsa rather than the stock 115lsa; and the trw cam is probably the 112lsa profile. its should be 214@.050 on the intake and 224@.050 on the exhaust. the trw is the all around better camshaft and would be my choice.

 

[Meep-Meep]

An accurate desision can't be made without knowing the specs of the Cam Dynamics cam, particularly the intake valve closing point. Put that one in and degree it at .004" and .050" lifts. That TRW cam is a pretty genaric profile found on a lot of aftermarket cams.

 

[lewtot184]

the trw has a better exhaust lobe. the truth of the matter is; best choice is none of the above.

 

[Al K]

the trw has a better exhaust lobe. the truth of the matter is; best choice is none of the above.

OK then...thing is,they're what I've got. I'm not ready to drop major jack on a whole new valve train for a tired mill;I'd rather do that for the planned 440-which is a ways from being ready-and add the fact that I've decided to retire(health issues) and $$ will have to be spent(more) wisely. I was going to break in either cam with the springs that are on there now(original singles) and change to some single w/damper pieces that came with a set of heads I had. I'd like to get new single w/damper units if I can afford it. Lew and Ron and Meep;what would you recommend as an alternative,spec-wise? Maybe I'll find something on CL or Evilbay that matches or comes close to your recommended specs. As always,THANK YOU!!! -Al

 

[Al K]

One more thing...I'm still searching for more specs on the CD cam;SOMEONE has to have an old catalog layin' around. I grab any old catalogs I see at garage sales;knowledge is power,I've heard. Plus,maybe I'll be able to help someone else out.

 

[383man]

Al if I was picking a cam myself for it I like the MP .528 solid cam for an off the shelf cam for your combo but I would honestly call a good cam company and have them choose or spec one out for the combo. On my 493 I went with Dwayne Porter who does many Mopar cams and heads and eng builds. He is one of the best I have ever seen. I mean yea I can pick a decent cam out for it but he is a Pro at it as he does it every day all the time for a living. And every Mopar I see with one of his cam grinds in them run great. Thats why I went with him on the cam in the 493 in my 63 now. Let me know if you would want his phone # and his prices were very good. Ron

 

[Meep-Meep]

With your otherwise stock motor I would run either of those cams assuming the CD degrees out close to the TRW. I think they will be very similar and not cause a huge drop in cylinder pressure. The factory blueprint Road Runner / Magnum cam would be a good choice too. The required spring pressure is low (about 90 lbs seat) so the factory rockers and push rods will be fine.

I agree with 383 that the .528" is a great cam but I wouldn't use it in your motor at this point. It requires dual springs, which means cutting the guides for the small seals and cutting the spring seat to accommodate the inner spring. Just toss in one of the small cams and enjoy the ride.