CompCams Magnum 282 solid lifter cam...???
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Drifting
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CompCams Magnum 282 solid lifter cam...???
I want to start builind my spare 350 4 bolt. I think I want to use this CC Magnum 282S solid lifter cam. It's got a
282/282 adv duration
236/236@.050 duration
.495/.495 with 1.52 rockers. 110 LCA.
I want to run that on a 355CID SBC. AFR 190CNC ported heads. Edel. RPM Air-Gap. 750 Demon and MSD ignition. 3,000 stall-3.70 rear.
That seems like a decent cam. What compression are we talking about that I'd have to run?? Anything over 11.0:1?? I would rather run a 10.5:1.
I was aslo looking at the 294S cam...but I think it might be too big..
Adv duration-294/294
Duration @.050 248/248
Lift with 1.52 rockers.-.525/.525 110 LCA
CompCams says a minimum of 9.5:1 compression with the 294. So, I assume 10.5:1 with either cam would be a great choice?? Should I look into the AFR 210's instead of the 190's if I go with the 294??
I'm hoping for the 375-400HP@6000 or so. The 294 says it's power band is from 2500-6500 and 2000-6000 for the 282.
I want one that's decent for the street. But, will aslo kick some butt. Any insight on either of these cams???
:cheers:
Aaron
Happy Thanksgiving!
282/282 adv duration
236/236@.050 duration
.495/.495 with 1.52 rockers. 110 LCA.
I want to run that on a 355CID SBC. AFR 190CNC ported heads. Edel. RPM Air-Gap. 750 Demon and MSD ignition. 3,000 stall-3.70 rear.
That seems like a decent cam. What compression are we talking about that I'd have to run?? Anything over 11.0:1?? I would rather run a 10.5:1.
I was aslo looking at the 294S cam...but I think it might be too big..
Adv duration-294/294
Duration @.050 248/248
Lift with 1.52 rockers.-.525/.525 110 LCA
CompCams says a minimum of 9.5:1 compression with the 294. So, I assume 10.5:1 with either cam would be a great choice?? Should I look into the AFR 210's instead of the 190's if I go with the 294??
I'm hoping for the 375-400HP@6000 or so. The 294 says it's power band is from 2500-6500 and 2000-6000 for the 282.
I want one that's decent for the street. But, will aslo kick some butt. Any insight on either of these cams???
:cheers:
Aaron
Happy Thanksgiving!
Team Owner
Joined: Feb 1999
Posts: 34,453
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From: Republic of Texas
Re: CompCams Magnum 282 solid lifter cam...??? (Aaron-74)
The 282S is fairly stout for a street cam, but not too big for the weekend cruiser. If for the daily driver I would step down one notch though. I know many big block guys running the 282S cam and they love it.
:cheers:
:cheers:
Racer
Joined: Apr 2002
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Re: CompCams Magnum 282 solid lifter cam...??? (Aaron-74)
Aaron,
The motor and cam combo you’re thinking about building is a very good street combo. With those heads and 11:1 compression the 284s should make around 450 or so. I tried that same cam on the Dyno with my 355. I also tried the 294S which also had very good power numbers and a very cool thumping Idle. Both cams like higher rocker ratios. I finally wound up using a solid Crane Street roller with 236I / 244E with a 112 LSA. The roller made more low end torque than the flat tappets I tried and kept the top end horse power of the 294S. I used the Trickflow 23 heads which were ported and flow comparable to the AFR 190's. Check out my web page for more info on the build. Good luck! :crazy:
The motor and cam combo you’re thinking about building is a very good street combo. With those heads and 11:1 compression the 284s should make around 450 or so. I tried that same cam on the Dyno with my 355. I also tried the 294S which also had very good power numbers and a very cool thumping Idle. Both cams like higher rocker ratios. I finally wound up using a solid Crane Street roller with 236I / 244E with a 112 LSA. The roller made more low end torque than the flat tappets I tried and kept the top end horse power of the 294S. I used the Trickflow 23 heads which were ported and flow comparable to the AFR 190's. Check out my web page for more info on the build. Good luck! :crazy:
Thread Starter
Drifting
Joined: Mar 2001
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Re: CompCams Magnum 282 solid lifter cam...??? (Stingraycrazy)
I think I'm going to go with an Eagle rotating assembly. It comes with 383 crank, 6.0 rods and 11.0:1 pistons with 64cc chambers. I think I wan't to stay with the solid flat tappet just for the noise and sound. It's kinda got an "old school" nestalgia to it. I don't know the compression height of the pistons. So, if I want to do a 9.000 deck..I'd have to have a 1.125 comp height
I figure that by 9.000-(3.75/2+6.0)
If I want to go with a 5.7 (wich I doubt)..I'd have to have a 1.425 compresssion height for a 383. But I think the 6.0's will do fine. The 294S won't be too big for the street? If it's too big and won't make decent for a sometimes daily..then I'll turn down some and go for the 282. Either way I WAN'T 450HP out of a SBC. I wan't to be solidly in the 12's. I wan't to be able to wrap the cam to it's fullest too, so would going to a 383CID and a 6500 cam be too much?? Or will I have to stick to the shorter stroke???
:cheers:
Aaron
I figure that by 9.000-(3.75/2+6.0)
If I want to go with a 5.7 (wich I doubt)..I'd have to have a 1.425 compresssion height for a 383. But I think the 6.0's will do fine. The 294S won't be too big for the street? If it's too big and won't make decent for a sometimes daily..then I'll turn down some and go for the 282. Either way I WAN'T 450HP out of a SBC. I wan't to be solidly in the 12's. I wan't to be able to wrap the cam to it's fullest too, so would going to a 383CID and a 6500 cam be too much?? Or will I have to stick to the shorter stroke???
:cheers:
Aaron
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From: Forked River NJ
Re: CompCams Magnum 282 solid lifter cam...??? (Aaron-74)
I am running the 294S in my motor. The only thing I wish I had done was increase the compression to about 11to1. The 282 is better for the 350. The 294 is just right for a 383. I am planning on a 383 in the future with 11to1 with the 190 heads I have. This has been built before and it gets right at 500 HP. I figure I am at about 450 with my combo. I would stick with the 294 myself. I am pretty happy with the cam in my 350 it runs fine now but really wakes up at 3500. Pulls very strong to 6500+ rpm. The 190 heads are plenty big for the 350 OK for a 383. 400+ cu/in and you need to go bigger.
Racer
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Re: CompCams Magnum 282 solid lifter cam...??? (gdh)
If your going for the 383 go with the 294S. Should be a really good combo. As far as the noise, I can't tell the difference between a solid flat tappet and the solid roller. If that’s the only reason It’s a no brainier to go with the roller. Less friction, faster ramp rates, better reliability & More Horse Power... :crazy:
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Thread Starter
Drifting
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Re: CompCams Magnum 282 solid lifter cam...??? (Stingraycrazy)
What about the lifter bores. Don't I have to have them bored out..or get a completely different roller block. If I have to buy a new block, then I'll just go with the solid cam since I've got a great nikel 4 bolt main 350.
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Re: CompCams Magnum 282 solid lifter cam...??? (Aaron-74)
Building a 383 myself this winter with Eagle rotating assembly, but I might go with the forged kit. I am also torn between the same two cams, kinda want the all out top end horses of the 294 but I also really like the way I can tool around a 1500 RPM right now so I might go with the 282S. :D
Comp Cams, Crane etc. make retrofit roller cams for non roller blocks, that's the way to go but real expensive.
[Modified by MotorHead, 6:00 PM 11/28/2002]
Comp Cams, Crane etc. make retrofit roller cams for non roller blocks, that's the way to go but real expensive.
[Modified by MotorHead, 6:00 PM 11/28/2002]
Racer
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Re: CompCams Magnum 282 solid lifter cam...??? (MotorHead)
All you need are retrofit solid roller lifters. Just hone the lifter bores as you would with a normal rebuild. Check Summit and Jegs for Crane or Lunati brands with horizontal guide bars. Also the horizontal guide bars & springs allow camshaft changes without the need of pulling the intake. I don’t like the vertical bars. I’ve seen some clearance issues with those...
Crane:
http://www.jegs.com//cgi-bin/ncommer...80&prmenbr=361
Lunati:
http://www.jegs.com/cgi-bin/ncommerc...29&prmenbr=361
Crane:
http://www.jegs.com//cgi-bin/ncommer...80&prmenbr=361
Lunati:
http://www.jegs.com/cgi-bin/ncommerc...29&prmenbr=361
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Re: CompCams Magnum 282 solid lifter cam...??? (Stingraycrazy)
The rollers will add about another 1K to the cost of building it. If money is not a factor go with the rollers for sure. They will definitly add some more power
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Re: CompCams Magnum 282 solid lifter cam...??? (Gordonm)
Is there no reliablilty issues with a roller setup ? I know all the new engines are roller but I have seen some nightmares with the retro-fit style breaking, twisting on the cam etc.
Thread Starter
Drifting
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Re: CompCams Magnum 282 solid lifter cam...??? (MotorHead)
Is there no reliablilty issues with a roller setup ? I know all the new engines are roller but I have seen some nightmares with the retro-fit style breaking, twisting on the cam etc.
Yeah..and I don't have $$$$ out the but. This is going to be a step by step thing. I think I'll go with the 284S I'm not looking for all out race...just a simple 450hp :lol: :crazy:
Thread Starter
Drifting
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Re: CompCams Magnum 282 solid lifter cam...??? (Stingraycrazy)
Do you think a custom cam with more lift and the same duration, LCA and whatnot would be better??? Then I could get the 292S and the 210AFR heads..
Or should I just stick with the "off the shelf''?
Or should I just stick with the "off the shelf''?
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Re: CompCams Magnum 282 solid lifter cam...??? (Aaron-74)
The higher the head flow the less radical the cam has to be to produce the same amout of power.
With ceramic coated pistons like mine and Stingraycrazy's allow low 11 C/R with correct cam timing on 92 octane.
Why would anyone build a 383 when it cost the same to build a 3.875 stroke 396 ci.
[Modified by gkull, 10:59 AM 11/29/2002]
With ceramic coated pistons like mine and Stingraycrazy's allow low 11 C/R with correct cam timing on 92 octane.
Why would anyone build a 383 when it cost the same to build a 3.875 stroke 396 ci.
[Modified by gkull, 10:59 AM 11/29/2002]
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Re: CompCams Magnum 282 solid lifter cam...??? (Aaron-74)
Do you think a custom cam with more lift and the same duration, LCA and whatnot would be better??? Then I could get the 292S and the 210AFR heads.. say like a 248/248@.050(off the shelf)...but with a .560/.560 or maybe a little more. :smash:
The problem with flat tappet cams is there is a limit to the ramp angle of the lobe in relation to lifter diameter. In short the lifter would dig into the side of the cam instead of floating on top. If you wanted a flat tappet cam like that you would possibly need to machine the block for larger diameter lifters. Several manufactures offer Max area flat tappet lobe profiles for circle track racing. But have poor reliability to consider for street use.
That's the advantage of a roller cam. You can have very high lift with a short duration lobe using a roller lifter. There's nothing like having your cake and eating it too... :crazy:
[Modified by Stingraycrazy, 7:12 PM 11/29/2002]
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Re: CompCams Magnum 282 solid lifter cam...??? (Stingraycrazy)
Also you could consider using the 282S with higher ratio rocker arms. If you used 1.7's over the 1.52's the lift would increase to .553 My nomally asperated motor liked the extra lift... For example, I'm using 1.7's and 1.8's for my turbo build to increase flow without going crazy with duration. :crazy: