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Old 03-19-2009, 03:33 PM   #1 (permalink)
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Thumbs up chevy 350 cam

what would be a good cam for a checy 350/355 stock just 30 over its going in a 72 4x4 chevy truck i was told a 265 duration would be probly best but i wanted to get some more oppions cuz i dont do the whole cam thing and all the numbers. i dont need all the bs from every ont telling me off about spelling grammar or any of that crap thanks.

Last edited by randyroads; 03-19-2009 at 03:49 PM.
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Old 03-19-2009, 08:13 PM   #2 (permalink)
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Need to know more about the intended use, (mudder, rock crawler, daily driver) and what heads, valve size, comp ratio, intake manifold, headers or no, carb. If you really want to pick a cam tailored to your engine these are need to knows.

265 duration, is that advertised or @.050? Depending on cam manufacturer it can be a big difference. I'm gonna say its advertised, otherwise that's a lot of duration for a pickup (doesn't like low RPM).

Just guessing that it's a run of the mill 350 with an alum intake and headers, 9-9.5 comp, in a pickup, I'd keep the lift around .450", that way no mods to heads for springs, 210-220 duration @.050", and an lobe separation angle at 110-111 degrees. Go with a dual pattern with the intake a little smaller. That should build good low and mid power, 1000-5000.

Anything different as far as specs, post em. Good luck.
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Old 03-19-2009, 08:19 PM   #3 (permalink)
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good advice right there ^

I'd say nothing more radical than a Comp Cams 268H. The268 works well with autos, is kinda lumpy, and good midrange grunt for a pickup, although you shouldn't run it with stock springs.
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Old 03-19-2009, 08:21 PM   #4 (permalink)
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I'm very happy with this cam in my 383. It should work well in a 350 too.

===============================================
Elgin - E1015P
.465/.488 Lift - 224/234 @ .050

Product Description
Fits: 1955 to 1994 283ci - 305ci - 307ci - 327ci - 350ci - 400ci

290/300 Adv. Dur.
112 Lobe Center
71 Overlap

Idle Quality: Fair with lope
Power Range: 2000 - 4800 RPM
Good choice for light towing
Recommended spring pressure 110lbs. for valve on seat; 280lbs. for valve open
Compression: 10.3:1 or less
Transmission: Stock auto or Manual
Recommended for mild bracket racing
===============================================
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Old 03-19-2009, 10:01 PM   #5 (permalink)
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eddelbrock peformer intake long tube headers thes heads r 1.94 1.5 might opent the exhaust up to 1.6 possibly . its going to be all the above mud runner rock climber and dalily driver it is a 30 over 350 not sure of compression with the new heads for it we use to have it in our race car has a purty big cam too big for a off road truck i would say the compression isover no more then 10.1 and i think the 265 is advertised like i sedi dont know much about the whole camthing buy u guys are a big help thanks o and the truck has a sm 465 with a 205 dana 44 closed knuckle hd dana 60 4.88s

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Old 03-20-2009, 03:49 AM   #6 (permalink)
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Use a cam like this and you be able to do all the things you want to do, and you'll even get fair gas mileage.
http://www.compcams.com/Cam_Specs/Ca...x?csid=95&sb=0
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Old 03-22-2009, 01:18 AM   #7 (permalink)
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will that be best for my truck will a little higher be ok and y is one biggrt then the other is it for longer valve opening ?
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Old 03-22-2009, 03:05 PM   #8 (permalink)
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OK, the cam that Florida recommends will have lots of power, and will go rumpy rump, but will get 8 to 10 mpg. The one I recommend is close to what I'm using, and in a truck would get 15 mpg in a highway cruise situation, and 12 around town.
I'm running 210 /214 with 1.6 roller rockers for .503 / .510 lift, but mines hydraulic roller. I had comp increase the LSA to 113, and it's stood straight up without intake advance. My power comes from 10.4:1 compression. When on the highway at 55 mph (keep in mind I'm injected) I get 20 mpg in a Jeep.
If you need to drive it daily, go with mine, but if it's just a weekend cruiser go for the big one.
The difference in intake and exhaust durations and lift is for better lowend cylinder pressure, and exhuast scavenging towards the upper end of its range.
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Originally Posted by randyroads View Post
will that be best for my truck will a little higher be ok and y is one biggrt then the other is it for longer valve opening ?
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Old 03-22-2009, 05:52 PM   #9 (permalink)
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Quote:
Originally Posted by MrWillys View Post
OK, the cam that Florida recommends will have lots of power, and will go rumpy rump, but will get 8 to 10 mpg...
I don't know man, I haven't run any real tests but my rides in the forest cost half as much than they did with the comp cam I was running. It was smaller (211@.050/.490/114) and made less power. Definitely sucked up more gas. This cam doesn't have a lot of chop though sounds good. The power is there from idle on up. Maybe it just matches a 383 better than the other??? The engine sings compared to the old cam.

EDIT: Even though Elgin rates this cam at 290/300 I'd call it a 272/280 by the way it sounds and performs. I took a chance on it but gave it a shot due to all the problems I've had with comp in the last 5-10 years.

EDIT 04/2013: Getting at least 15mpg with 42" tires and 4.10 gears. Engine will turn the tires at WOT through second gear in heavy mud. love this Elgin!
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Old 03-23-2009, 01:42 AM   #10 (permalink)
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sweet yea i have heard that comp camsas gotten a little sloppy lately with there cams the guy at the head shop sed that thay got a cam that was 20 thousands off of what it should have been he sed to go with a lunati ,mellings and one other that i cant rember but they went out of busness but mads some good cams so im not sure if i want to chance spending my money on a cam that may not be up to par so im still up in the air about a cam at this time any suguestions
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Old 03-23-2009, 09:46 PM   #11 (permalink)
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Crane Cams went out of business about a month ago, comp's are ok, lunati is a pretty good one, howards are ok, elgins are a little cheaper. I like Isky the best, made best power for the engines we build with the rules were limited to. But were also trying to squeeze every last hp we can get. You probably dont want to do this but just in case someones got a question about two cams that spec the same, they can be very different, and the only way to know is map them. Lengthy process which involves plotting the measured specs on graph paper to compare. Its a real eye opener to see two supposedly same cams graphed out. The big difference is in the low lift numbers at like .100", .200". If you ask the cam manufacturer they would probably even have this info. Just in case someone wanted to know.
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Old 03-23-2009, 10:57 PM   #12 (permalink)
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sweet that helps alot thanks man. what about crower cams i heard they were good from my machine shop guy

Last edited by randyroads; 03-23-2009 at 11:55 PM.
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Old 01-22-2013, 10:28 AM   #13 (permalink)
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hey i was just wondering what cam you ended up using and did you like it? did u upgrade the heads at all?
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