|
|
|
Re: Cam Help RB 496
[Re: 440Jim]
#1751200
02/12/15 05:11 PM
02/12/15 05:11 PM
|
Joined: Nov 2004
Posts: 370
Northeast Georgia
47hudson
OP
enthusiast
|
OP
enthusiast
Joined: Nov 2004
Posts: 370
Northeast Georgia
|
Quote:
Quote:
We use these cams with the Indy rockers and retainers with good results.Choose a good spring with aprox.225 to 250 lbs on the seat and 500 to 600 lbs. open.For best upgrades use 10 degree titanium retainers and 10 degree locks then you can use a little more spring pressure if you want.
Those pressures are a lot higher than the Comp 925-16 springs.
I was just going off the "recommended parts" in the Comp catalog. If anyone could point me in the right direction it would be greatly appreciated!
|
|
|
Re: Cam Help RB 496
[Re: sixpackgut]
#1751201
02/12/15 05:12 PM
02/12/15 05:12 PM
|
Joined: Nov 2004
Posts: 370
Northeast Georgia
47hudson
OP
enthusiast
|
OP
enthusiast
Joined: Nov 2004
Posts: 370
Northeast Georgia
|
Quote:
i would change the converter to a 53-5500 before I change the cam. Even if you change the cam you will still need to change to converter
I have a PTC converter and I am going to try and send it in to see if it could be made to match my engine better.
|
|
|
Re: Cam Help RB 496
[Re: 440Jim]
#1751202
02/13/15 02:02 PM
02/13/15 02:02 PM
|
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing
master
|
master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
|
Quote:
Quote:
We use these cams with the Indy rockers and retainers with good results.Choose a good spring with aprox.225 to 250 lbs on the seat and 500 to 600 lbs. open.For best upgrades use 10 degree titanium retainers and 10 degree locks then you can use a little more spring pressure if you want.
Those pressures are a lot higher than the Comp 925-16 springs.
Those pressures I posted are for a roller cam.sorry for any confusion.The 925-16 spring is a little light at 100+ seat and 330+ open pressures but that is advertized at 1.900 installed height.Most solid flat tappet cams recommend the installed height at 1.875 or less. 
|
|
|
Re: Cam Help RB 496
[Re: 47hudson]
#1751204
02/14/15 11:53 PM
02/14/15 11:53 PM
|
Joined: Jan 2003
Posts: 10,008
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,008
Frostbitefalls MN (Rocky&Bullw...
|
I have heard there is a process that you can have done to a new flat tappet cam to further harden it. Might be a good investment? Also, lifters with center oiling hole in the face?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: Cam Help RB 496
[Re: gregsdart]
#1751205
02/15/15 09:32 AM
02/15/15 09:32 AM
|
Joined: Jun 2010
Posts: 1,144
wellington ohio
68-scatpack-rt
In thin ice
|
In thin ice
Joined: Jun 2010
Posts: 1,144
wellington ohio
|
Why not call cam motion and have a custom cam ground? It's just about the same price as a "shelf" cam. Maybe a bit more but, for what you're doing, I'd think a tailored cam would be my first choice.
unions....the folks who brought you the weekend!
|
|
|
Re: Cam Help RB 496
[Re: 47hudson]
#1751206
02/15/15 12:54 PM
02/15/15 12:54 PM
|
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
|
Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
|
Quote:
Quote:
i would change the converter to a 53-5500 before I change the cam. Even if you change the cam you will still need to change to converter
I have a PTC converter and I am going to try and send it in to see if it could be made to match my engine better.
Not sure what your target ET is, but you have room to go bigger on the cam now w/ the current converter. The suggestions I made were intended for the 'vert you have now.
But if you're looking for BIGGER gains, then I agree that an even bigger cam will require a converter change.
|
|
|
|
|
|
|
