: Bigger cam yah or nay!
CamaroNOTcamero Feb 28th, 02, 11:40 AM guys, i since before planning o0n the 4-speed i decided to go with a Magnum 282S solid cam (.495" lift 236 duration), with a dual plane intake.
I was thinking it might run out of steam to fast for a 4-speed car with 2.64 1st 1.74 2nd, 1.33 3rd and 1:1 fourth with 4.10 rear gears.
I was thinking of maybe going for a Victor Jr manifold +1", with a 294S cam (.525" lift, 248 duration)
I think i'll check out crower and ultradyne for grinds also.
i would like to run low 12's with it, but more importantly i'd like to have some fun on the street with it, i'm thinking the bigger cam may be the ticket with a 4-speed.
here's the rest of the combo:
355ci
10.3:1 compression
Trick flow 23 degree heads
650cfm speed demon.
joesmith69 Feb 28th, 02, 11:57 AM I think you'll be happier with the 282s and a Victor Jr. intake. The 294 will give up alot of lowend torque. The 282 will wind a 355 to 6500rpm without hesitation. Even with my 'little' Crane hydraulic, I plan on shifting at around 6300-6400 once I get my heads ported and upgrade to a set of super comp headers.
Just my take. I drive my car everyday(for now anyways), and I wouldn't want any more cam in it. My idle quality is very good @ 850rpm, I get good gas mileage, my brakes have plenty of vacuum.
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79' Z28 4-spd- built 355, TRW 10:1 forged flat tops, WP SportsmanII heads, Crane Energizer 230/230 duration .480"/.480" lift, Edelbrock Victor Jr., Holley 750cfm, Dynomax headers, dual 3" flowmasters :) 3.73 Posi 10-bolt
nitrous383 Feb 28th, 02, 01:18 PM Hey camaro, thats a nice setup with either cam. Why solid? Im not doggin solid cams but for a street car you could go with hydraulic with some of those magnum high rev lifters.Heres my setup, 81 camaro,4 speed super t10 (2.64 1st gear),383(292h magnum+vic jr),I bought the high rev lifters to have the best of both worlds(kinda). I think the 294S would work just fine with a 4 speed and 4.10s, GO FOR IT DUDE IT WOULD SHAKE THE EARTH.
CamaroNOTcamero Feb 28th, 02, 01:32 PM solids are better on top end HP and alot better on low end torque, plus they rev faster. i'm not expecting to have to lash em very much, i'm putting on roller rockers with posi locks and stud girdles.
I've found some nice Crower and ultradyne grinds also.
I like the vic JR. for a 4-speed, but leaning back and forth between these two cams.
Thanks for the suggestions guys, keep em coming!
i'm gonna post the dyno runs on DD2k with these cams and the other grinds too.
CamaroNOTcamero Feb 28th, 02, 01:48 PM Here's the dynos
with my combo stated above (with Vic Jr):
294S solid cam:
Hp: 485 @ 6500rpms
TQ: 448 @ 5000rpms/ 375 @ 3000rpms/ 336 @ 2000rpms
282S solid cam:
HP: 460 @ 6000rpms
TQ: 452 @ 4500rpms/ 404 @ 3000rpms/ 370 @ 2000rpms
Crower 00321 solid (.482/.504" lift 242/248 duration @ .050"):
HP: 476 @ 6500rpms
TQ: 447 @ 5000rpms/ 386 @ 3000rpms/ 348 @ 2000rpms
UltraDyne 286/274 Solid (.518/.530" lift 243/251 duration at .050"):
HP: 487 @ 6500rpms
TQ: 450 @ 5000rpms/ 381 @ 3000rpms/ 341 @ 2000rpms
From the looks of it i might just stick with the 282S and go for the Vic JR, but with big trans gears and 4.10's i'm not sure.
nitrous383 Feb 28th, 02, 03:44 PM Hey camaro, it would be awesome if you could DD my combo with my current cam,and also with the 294S if your up to it. If so heres my combo.
383 stroker
Victor jr,800DP carb
11/1 flat tops(11.2/1 final compression)
Edelbrock ETEC200 heads,200cc 255I 195E @.500
1 3/4" headers 2 1/2" exhaust
292H magnum .534(1.6 rockers) 244@.050
Hope I didnt leave anything out,It would be awesome to see how my 292 compares to the solid version(294S) in my combo,Thanks in advance if your up to it. As for your combo, why not the 294? you know you want it... Just imagine,some punk in a honda pulls up next to you and feels your car idling over his 500 watt subs. MUAHAHAHA!
CamaroNOTcamero Feb 28th, 02, 04:05 PM i'll dyno it in about an hour or so, hehe i cant wait to have everyone feel the rumble.
nitrous383 Feb 28th, 02, 04:25 PM Cool thanks man. I think even with the 282S you would have an earth shaker. Keep in mind that you can set your idle lower with a manual trans and make the idle sound a bit nastier. You wouldnt have a converter fighting it. With a 292 magnum in a 350 I could idle at 650 because of my 4 speed,and it sound MEAN. I know idle isnt everything, but its all about fun(for me atleast).
CamaroNOTcamero Feb 28th, 02, 05:10 PM i need the flow numbers on the heads, not just the top intake/exhaust, if you can get those it'll be alot more accurate.
I used trick flows, which were a little bit higher on the top.
499HP at 6500rpms
452TQ at 5000rpms/ 314TQ at 2000rpms
how's the throttle response with the single plain, not just full throttle, but part throttle, does it suffer alot from the big cam and single plane?
nitrous383 Feb 28th, 02, 05:28 PM Single plain is on its way from jegs,but I will let you know how it gos. Were those numbers with my 292? or the 294? Heres the flow numbers for my heads.
.100 .200 .300 .400 .500
67/57 122/110 175/153 223/182 252/196
69 road racer Mar 1st, 02, 12:05 AM Hey, Camaronotcamero,
Thanks for dynoing my combo the other day. Did my suggestion of the 294S get you thinking? Sounds like an awesome cam, but is it going to be a dog on the street?
A couple of points to think about though. In real world tests, the difference between a Vic Jnr and a RPM manifold doesn't seem to be as big as DD2000 suggests. Because it only allows you to input a generic dual plane or single plane manifold we have to question the accuracy of the figures it spits out. Perhaps when they get round to producing DD2002 you'll be able to input individualy spec'd manifolds (how cool will that be?). Also how much does DD2000 take into account valve lash on a solid? I've heard it suggested that solids tend to get over-estimated on DD2000. I just can't believe 485 bhp from a 355 is as easy as that other wise every crate engine supplier in the country would be churning them out.....any thoughts anyone?
What we need are some real world dyno figures or timeslips or seat of the pants experience of these solid cams. So come on all you guys running 282S or 294S cams, whats the story?
Cheers
69RR
69 road racer Mar 1st, 02, 12:26 AM Hey, Camaronotcamero,
Thanks for dynoing my combo the other day. Did my suggestion of the 294S get you thinking? Sounds like an awesome cam, but is it going to be a dog on the street?
A couple of points to think about though. In real world tests, the difference between a Vic Jnr and a RPM manifold doesn't seem to be as big as DD2000 suggests. Because it only allows you to input a generic dual plane or single plane manifold we have to question the accuracy of the figures it spits out. Perhaps when they get round to producing DD2002 you'll be able to input individualy spec'd manifolds (how cool will that be?). Also how much does DD2000 take into account valve lash on a solid? I've heard it suggested that solids tend to get over-estimated on DD2000. I just can't believe 485 bhp from a 355 is as easy as that other wise every crate engine supplier in the country would be churning them out.....any thoughts anyone?
What we need are some real world dyno figures or timeslips or seat of the pants experience of these solid cams. So come on all you guys running 282S or 294S cams, whats the story?
Cheers
69RR
Eric68 Mar 1st, 02, 08:37 AM Camaro - The 282s in my 383 pulls hard through 6200 RPM with a Vic Jr. It would pull even a little higher in a 355 with a Vic Jr. A dual plane manifold is borderline on being a mis-match in a 355 with that cam IMO. A 383 could go with either dual or single plane with the 282s - I've run both and the Vic Jr is a hair faster.
You'll kill too much TQ with the 294s - that's a BIG step up. If you want something a little bigger than the 282s look at some of the Crower Pro-street grinds.
If in doubt ALWAYS go smaller! JMO
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68 Camaro, 383 small block with TH350 trans. 11.98's at 111mph and never trailered.
CamaroNOTcamero Mar 1st, 02, 10:04 AM nitrous i'll try it again with those numbers and 294S in a min.
69 road racer,
I think the 294S might be a little too big for me also, no problem on the dyno. glad i can help you guys out.
I've been hearing good things about the solids.
I dont know how much it acomidates for lash.
By the time i finish the engine i'll be able to tell you guys exactly how to built this thing.
Eric, i think i'll go with the 282S and the vic JR.
I'm gonna give crower and ultradyne a call before buying one, and see about getting a custom ground cam made, like an intermediate between the 282S and the 294S on the solids. i've tried some of there pro street cams on the dyno, the very low end numbers look a little small.
nitrous383 Mar 1st, 02, 10:57 AM Isnt there a cam between the 282S and the 294S? If there is then it would be a happy medium for you. I know there is a 280H,286H,and 292H.
CamaroNOTcamero Mar 1st, 02, 12:13 PM Nitrous here's your engine with the 294S:
525HP @ 6500rpms
485TQ at 5000rpms/420TQ at 3000rpms/369TQ at 2000rpms
Here's it with the 282S cam:
494HP at 6000rpms
490TQ at 4500rpms/451TQ at 3000rpms/408TQ at 2000rpms
Here's it with your current cam the 292H:
507HP @ 6500r's
452TQ @ 5000rpms/368TQ @ 3000r's 312TQ @ 2000r's
I think you should consider dropping down to the 282S solid cam.
nitrous383 Mar 1st, 02, 02:15 PM Thanks camero(heh). Looks like the 294 is a worthy purchase for me, those are nice numbers even if its off by 25 horsepower. I wouldnt use the 282S because I dont want alot of low end torque,it would kill my 4 speed. I want the low end to be softer to launch better and save my 1st gear. I agree with Eric68, you would probably kill too much TQ with the 294. The added power of the 294 over the 282 is probably not worth the loss of vacuum and low end TQ, just my opinion on the matter. Thanks again for the dyno numbers camaro.
CamaroNOTcamero Mar 1st, 02, 02:51 PM no problem, decided to stick with the 282S, and just go with a single plane manifold.
69Man Mar 1st, 02, 10:38 PM How about one of these from Comp Cams, the Extreme Energy solids.
Duration Advertised
Grind# @.050" INT/EXH Lift w/ 1.5
xs256s-10 218/224 256/262 .465"/.477"
xs262s-10 224/230 262/268 .477"/.488"
xs268s-10 230/236 268/274 .488"/.501"
xs274s-10 236/240 274/280 .501"/.510"
xs282s-10 244/252 282/288 .520"/.540"
xs290s-10 252/260 290/296 .540"/.558"
All these are on a 110 degree lobe separation, with 4 degrees advanced already ground in, and a 106 degree centerline. Also remember that a solid acts smaller than it really is, so if you have a solid camshaft that has a 248 degree duation at .050". It acts like a hydraulic camshaft with a 240 degree duration at .050", except is has faster lobe acceleration. Any of these would work well in your engine, maybe not the last one, but if the Extreme line in the hydraulics are the hot ticket, these should be even better!
327Mike Mar 2nd, 02, 01:56 AM I was wondering which one of these might work in my 327. Its got 461 camel humps CC roller rockers and 10.5:1 compression. Performer intake (I'd run an rpm but hood clearance is a REAL problem) 600 vac Holley, 2 1/2 inch rams horn manifolds (again no clearance for headers). The longer exhaust duration might help with not having headers. I've got power brakes with a reservoir, so need to keep reasonable vacuum. 4 speed and 3.07 rear. (note this is not in a Camaro, but a 3000lb tube frame sports car). How about the xs274s, or would that be too big, and I'd better off with the XS268s? I want power from 2500 to 6000, cruise rpm 3000 to 3500, preferably with half decent gas mileage at cruise. Any ideas?
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69 Camaro Convertible 402
www.holroydm.freeserve.co.uk (http://www.holroydm.freeserve.co.uk)
64 Gordon Keeble 327/300
www.gordonkeeble.com/registry/gk06/gk06.htm (http://www.gordonkeeble.com/registry/gk06/gk06.htm)
nitrous383 Mar 2nd, 02, 07:04 AM 327Mike, If you need to run pump gas that 10.5/1 compression will not go to well with the 268 or the 274. You need alot of overlap to run pump gas with that 10.5/1 compression, and putting a big cam in there wouldnt go to well with your performer intake and exhaust manifolds so you lose either way. You could retard the cam a bit though, to reduce cylinder pressure.
67vert Mar 2nd, 02, 07:39 PM Hey guys, I ran the Crane Mechanical Commander part number 114681 in my 383 with the Wiend 142. It made tons of power. Here are the specs off the cam sheet. Lift int. 518 exh. 536 \ Duration int. 280/244 exh 288/252. I ran this cam 800 miles before I spun a rod bearing. It is in excellent shape. I would sell it cheap if you want to try it. Email kouma@megavision.com
CamaroNOTcamero Mar 2nd, 02, 08:37 PM thanks but i'll have to pass, i haven laid down strickt plans for the cam yet, and i'm working on the rear so i'm short on cash for the engine at the moment.
PDQUICK Mar 4th, 02, 03:53 AM CamaronotCamero,
Have you tried the Comp 12-221-5 solid on dyno?? This one seems to give me consistently higher numbers than the 282 on most combinations.
69 road racer Mar 4th, 02, 05:01 AM That sounds interesting, less lsa, more duration at .05, what figures does DD2000 spit out compared to the 282S?
Camaronotcamero I can here you typing those cam specs in all the way from the other side of the ocean!
Lets here those numbers!
Cheers
69RR
CamaroNOTcamero Mar 4th, 02, 10:04 AM PDquick, can i have the numbers on that cam, havent tried it before.
69RR, lol, i've been trying cams like crazy! http://www.camaros.net/forum/biggrin.gif
soon as i find the numbers i'll give it a shot.
69 road racer Mar 5th, 02, 04:19 AM Go to compcams.com, type in the grind number in the search engine and it spits out the figures you need.
Cheers
69RR
tommyg Mar 5th, 02, 08:09 AM CamaronotCamero
I have a question for you. I recently bought a 69 Camaro with a 350 block. Here is alist of what was done to the engine:
Bored 30 over.
2.02 Fuelie heads
RPM Air Gap Manifold
Edlebrock 750 carb
Cermanic coated Headers.
The car has a M20 tranny with 4:10 gears. My problem is - the guy I bought the car from does not know what cam is in it. He says it is a step above stock but does not know the specs. I want to get as much performance out of this set up without losing drivability. The engine runs great though. What should I do? Should I have the Cam changed?
nitrous383 Mar 5th, 02, 08:57 AM M20 with 4.10 gears? that is gonna flat get up and go. You can run a slightly larger cam that usual with a manual trans and still remain streetable, thats been my experience anyway. If you can afford it you should slap in a hyd.roller. In my opinion, you could put a cam with around 245@.050 duration and still remain streetable with that combo if you have the compression for it, do you know the compression?
CamaroNOTcamero Mar 5th, 02, 10:29 AM you'd like something with around 230-236 duration, solid if you can tolerate the valve adjustment.
4.10's broaden the range alot, so be glad you got em.
tommyg Mar 6th, 02, 05:04 AM My compression is 10.5:1. Why do you suggest solid lifters? The question is is how should I go about this. Should I pull the cam out just to see what it is and put the right one in? If I do that will the gains be worth it?
Thanks for the feedback.
PDQUICK Mar 6th, 02, 08:09 AM CamaronotCamero,
The numbers for the Comp 12-221-5 (in case you haven't got 'em yet!)
Adv. Dur. 280int/285exh
.050" Dur. 242int/250exh
Lift .507"int/.532"exh
Lash .026"int/.028"exh
Lobe separation 108
Unfortunately, they don't give the Intake centerline in the catalog. I have a DD2000 cam profile for this one at home that I can e-mail to you if you want it though?
CamaroNOTcamero Mar 6th, 02, 10:26 AM nah, i'll use that. i'll give it a shot tonight.
Tommy,
i suggest solids becuase they're better on the low end torque without costing much more. they are also better for top end performance. if you can stand to lash it, go for a solid.
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