Chevy Nova Forum banner

1 - 13 of 13 Posts

·
Registered
Joined
·
58 Posts
Discussion Starter #1
Finally getting things done. Time for a cam choice and looking for a few suggestions.

From the top:
750 Holley
RPM air-gap
210 cc heads, with 64 cc chambers, 2.08/1.6 valves, .550 max lift springs & 1.6 roller rockers
10.8:1 flat top SRP pistons
5.7 4340 rods
Scat 9000 series crank
Muncie M-20 4 spd
4.10 gear

All going into a 73 Nova. It's a street/strip but more street, probably just a couple times a year to the strip. I can't really afford a roller but I have no problem with adjusting lash so I'm not afraid of mechanical vs. hydraulic. I definately want the rough, lopey idle. I have an idea, just looking for other thoughts. I was thinking of the Comp Cams XS282S.

http://www.compcams.com/Cam_Specs/C...x?csid=227&sb=1

Thanks, in advance, Joe
 

·
Registered
Joined
·
163 Posts
I think that cam would work well with your combo. A little radical for some but I would use it, although I'm not really a fan of comp cams in general. Be sure and check your springs set up for coil bind, pressure etc. That cam with 1.6 rockers will be over .550 lift on both intake and exhaust if I looked at the correct one. Your link didn't work for me. Good Luck!
 

·
Premium Member
Joined
·
11,072 Posts
I punched the numbers into DynoSim and I find a little more power and quite a bit more torque with either a Lunati solid 272/282 (smaller than the Comp, +2 h.p. and +20 ft. lbs.)) or the Lunati 276/284 (a bit bigger than the Comp--+10 h.p. and +20 ft. lbs.) The Lunati cams are both more aggressive grinds which may require more spring pressure.
 

·
Registered
Joined
·
3,895 Posts
To stay in that same neighborhood, I'd look at the Lunati Voodoo #60142.
249 / 257
.540” / .560”
110 / 106
2800-7000

The cam you have selected with 1.6 rockers will be
.555"/.576" so you will need to do a spring upgrade either way.:yes: Might as well make the best of it instead of backing up to a lower lift, antiquated lobe design.:rolleyes:

With the stick and gears you have you can easily go a step further but I don't know how "Rowdy" you really want it.:devil: As step further would be the Lunati #60143..
257/265
.560"/.580" (w/1.5 rockers:yes:. 1.6 would be .579"/.619")
110/106
3000-7200
:devil::yes::devil::yes::devil:
 

·
Registered
Joined
·
58 Posts
Discussion Starter #7
I've posted this on a couple different sites to get more suggestions and received more than a few for the lunati 60143. Should I turn that many revs with a 400?
 

·
Premium Member
Joined
·
2,921 Posts
if you have a solid bottom end, crank, rods,hardware etc it wont hurt anything..
 

·
Registered
Joined
·
2,146 Posts
that 400 will rev as much as your parts can take. I've taken my 400's past 7,000. For what your doing I'd shift it at 6800. That would be about it IMO.:D
 

·
Registered
Joined
·
58 Posts
Discussion Starter #11
I called and upgraded to the .650 springs this morning. I think I'll go with the voodoo 60142 or 60143. Anyone have dynosim numbers for those two?
 

·
Registered
Joined
·
4,612 Posts

·
Premium Member
Joined
·
13,309 Posts
remember a big cam on a 350 is a smaller cam and subsusiquently lower RPM cam on a 406 than the 350... reduce the rpm by 200 to 500 respectively..
 
1 - 13 of 13 Posts
Top