abray1

Hey gang I was @ gmpartsdirect.com and looked under the performance section and I noticed some hyd roller cams for sbc that I haven't seen before. Has anyone got any experience with these;

GM#19210723
Duration@50 Lift 112 center
I 222 509
E 230 525

GM#19244485
Duration@50 Lift 112 center
I 234 539
E 242 558

If anyone has used these or has info on them please let me know as I am looking for a small notch above the LT4 hot cam for a mild 350 for my vert.

brando54009

do you know the lift?

vetteoz

iTrader: (13)

M#19210723
Duration Lift
I 222 509
E 230 525

GM#19244485
Duration Lift
I 234 539
E 242 558

vetteoz

iTrader: (13)

GM#19210723 New part # for GM 846 cam

GM#19244485 New part # for GM 847 cam

bottom of page
http://carissma.lefora.com/2011/02/15/cam-selections/

847 is a kick **** cam but you want some good gear to go with it

abray1

The lift numbers are to the right. They are the 509 525 on the first and 539 558 on the second. They are 112 lobe center. I need to know idle quality, rpm range in a 350 and how much power and driveability in my vert that I mainly want to be a cruiser. The 350 I am building has a forged factory 350 1pc crank with 6.0 H beam eagle rods with arp 2000 bolts. Forged mahle pistons slightly dished so I can keep the compression at 9.5 to 10 to 1. Its balanced and has hooker 2210 long tubes,a holley stealth ram with 30lb injectors, a built 700r4 with a 9 bolt posi with 327 pbr rear disc. I was going to go with a lt4 hot cam but I was wanting a little more modern cam that will idle around 600 or so and make arund 400hp and torque. I still have to pick the heads and cam to complete it and I can't make up my mind. My iroc is my hot rod and i want this to mainly be a cruiser but I am tempted to make it a little on the strong side but I want a cruiser with the vert. I have a zz4 cam and it worked great in a stock 350tpi motor but it could have been a little bigger since you could bearly tell it had a cam other than stock. I may still go with the zz4 cam but since I have the holley stealth ram a bigger cam would work much better with it over the stock tpi. Decisions decisions

vetteoz

iTrader: (13)

Read the link I posted above or Google them
Plenty of online info and builds using those two popular if now dated GMPP cams

abray1

The carissma lefora is a very good article. I think I can narrow down a head and cam choice from that. I will have to find a head that matches up to the stealth ram and its 1205 port and pick a cam for the head I choose. I would like the fast burn heads but I don't think the stealth ram will fit them. It took me half a year to get my first stealth ram to fit my ported brodix track1 heads and I not going through all of that for a cruiser.

RPM range is open but probably in the mid 6000s. I would like the biggest head that will allow the vert to be mostly driveable but still have some kick since it is a 92 z28 convertible. I don't mind a little chop to the idle but not a 1000rpm kickin the fenders off idle. around 600-700 would be plenty and a newer cam that has tons of power with not a lot of lope would actually be perfect. One of the cams stated that it didn't lose much low end but had great mid and very good upper end power.

vetteoz

iTrader: (13)

I have the 847 cam in a 12:1 383 and has a steady but very lumpy idle @ 750 rpm so would be higher in 350

brando54009

ah yea for some reason my eyes didn't catch it. been staring at a mill screen all day reading g code lol

Orr89RocZ

iTrader: (20)

Yeah 846 and 847 cams. Very popular in the LT1 world but can be used in any hyd roller sbc.

846 is somewhat comparable to the comp cams 503 cam 224/230 grind. Both considered about the max you want to go with on a stock headed/stock bottom end LT1 car but the fastest track stock headed motors run bigger cams.

847 is a big bad boy for a 350 motor. It will want good heads and will go to 7K rpms with supporting intake. All the 350's I've heard with that cam are pretty nasty so it may be too much for you. The 846 is a good compromise.

abray1

I really have an overkill bottom end for making a cruiser but I already had some of it so I used it. Forged steel 3.48 factory 1pc crank, 6' H beam rods, ARP 2000 bolts, Mahle slightly dished forged pistons all balanced with a holley stealth ram 2210 headers and 4" exhaust for a 92 Z28 vert that will be a cruiser. Be cool radiator with Taurus fan, 700r4 that is built with a 9 bolt posi with 3.27 gears and pbr disc. I need to pick the cam and heads for it that will go to around 6500 or so and when I pull it into gear it doesn't jerk because it is idling at 1000rpm. I have a 406 with track 1s and a heavily modded stealth ram in my iroc so the vert will be a cruiser.
Anyone have a reccomendation on cam and heads. I need a head that flows well in the low to mid 500 lift area. I would like fast burns but I don't think the stealth ram will port match to it. Anyone know what head fits a stock stealth ram fairly well and flows good also? What cam does the stealth ram seem to like? I might even sell the stealth ram and get a edelbrock 4 barrel efi intake if that route would work better matching up to fast burns or a better head fitment than the stealth ram.

Got it narrowed to one of 4 cams. Just depends on which cam will fit what head and my stealth ram. If anyone has one of these combos feel free to add some wisdom especially in the tune department which will be very important since I cant have any cam surge in this build.

Cam #1. Elliot Port Works 224/230 573/568 112lsa
Cam #2. CC 503 224/230 537/544 112lsa
Cam #3 CC 502 218/224 528/537 112lsa
Cam #4 GM 846 222/230 543/563 112lsa

If anyone has used one of these let me know what head and intake you used and who did your chip. The tune will be very important since it will be a daily driver. I like a little lope but it has to be a mild lope in a 350 bored 40 with a 700. Also, don't know anything about Elliot Port Works; anyone use them?

Orr89RocZ

iTrader: (20)

E port works is good with LT1 stuff but also EFI sbc's. Lloyd does good work. Think his cams come from Bullet Racing cams.

Any of those cams will be about what you need except the #3 there..its alittle shorter in duration. The others will do your 6500 rpm shift and run hard. I like 1 and 4 best for their higher lift, when used on good heads like AFR 195's, Pro-filer 195's, pro 1 200's and the like. Fast burns are ok heads but I think the other stuff out there will flow better and have better power potential. Fastburns need work to really shine.

1gary

Not for nothing.I would think the info guys have given you is more up dated.But we used this cam on a crate 355 with Vortec heads and a TBI.It's a bear on the low end with a smooth idle.Not the high shift points you are talking about.But something else for you to look at that we used for a build and drove it.

http://www.summitracing.com/parts/NAL-14097395

ASE doc

Just to mention this since no one touched on it yet. Gross lift can be misleading since it includes the rocker arm multiplier. I've noticed that alot of Comp's cams show stated gross lift using a 1.6 rocker(have to look at the fine print to see this), but when I see a cam with 230 duration at .050 and .544 lift, I'm already pretty sure that it was stated using 1.6 rockers. That makes a huge difference. When comparing cams, it's good to look at actual lobe lift. This and .050 duration give us a clue as to how fast the lobes' ramps are.

As far as what cam to use to put you in the 400hp range, I have used an SLP cam with similar duration to that of option #2. Lift was stated with 1.5 rockers at .513/.520. This cam made 417hp in a 355 with 10.2:1 compression and twisted wedge heads and it idled fairly well. Idle quality along with upper rev peak will generally increase with LSA. 112 LSA is good for that duration but 114 would produce an even better idle and might push your top end a little higher with a flatter torque curve.

You may want to talk with a cam grinder in your area. Here in Portland we have Oregon Cams where Ken will help spec a cam and grind it for you on two days notice. Last time I used him, he beat Comps price by $150 for cam and lifters and since Comp only grinds cams as they are ordered(2 week wait), he also beat their time by 12 days. He does cams for the more serious racers in our area and his stuff is rock solid.

abray1

I already have some cc magnum 1.5 rockers and since it is a cruiser I would like to stay around 550 lift to make it easy on the valve train. The last time I realy was in the know on cams was early 90s when I put a zz4 cam and shorty headers on my 89 iroc. for 98% stock that combo would fly. You had to listen to hear the overlap it was so small but pulled crazy hard to 4600. With the 2.77 gears it would pull forever. That was 20 years ago and I am in my 40s now instead of mid 20s. Now there is LT4 hot cam (not available back then) and now it is old. The gm cam ran so good I may get #4 and a set of aluminum 049 bowties a friend has and try that. Changing heads is a pain but its going to be a cruiser and if I can get around 260 cfm of flow around 525-550 lift I will be happy. Don't know how much power that will be but if it will out run my old 89 iroc combo I will be happy. You guys are very helpfull. 20 years ago I could remember cam part numbers, header part numbers etc. Now I can't remember when I took my last P!$$. I still love these darn cars though. I guess I have been going through my mid-life crisis since about 18. Maybe it will end as soon as I find my black on black 89 GTA. Thats the last car I want to get. Had 69 Z28s, 66 SS 396 chevelles, still have 90 ZR-1 corvette and 02 yellow corvette and 05 duramax but all I drive is 92 Z vert. Any of you guys have the urge for a cadillac; I know I never have and my wife doesn't understand that.