crower or isky cams?
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Laughing Gas
Joined: Dec 2010
Posts: 924
Likes: 1
crower or isky cams?
currently looking for a cam for my 300 build that im doing in the winter looking for that lope sound at idle. one of my friend recommended crower becuz that what he has in his 350 and it sounds nice, i know f250 recommend the isky cam and it will have a lope sound and im pretty it would have a nice power range on it as well! but has anyone else heard of crower? your thoughts?
thanks in advance!
thanks in advance!
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
Crower and Isky are both top notch. But if you want lope get a solid lifter cam from Schneider.
T274F Ford 240-300 Solid Lifter Camshaft
Yes, you will have to adjust valve lash every 3,000 miles, but so what? You will have one nasty sounding 300.
T274F Ford 240-300 Solid Lifter Camshaft
Yes, you will have to adjust valve lash every 3,000 miles, but so what? You will have one nasty sounding 300.
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
You have to buy new lifters anyway, whether they're hydraulic or solid doesn't matter. Solid lifters drop right in, no worries. You have to have an adjustable valvetrain, though, i.e. screw-in studs, guideplates, and adjustable rockers.
Nobody uses them anymore because it's noisy and the rockers require periodic adjustment. OTOH, it's doubtful you'll ever run a cam that big at enough rpm to make it worthwhile. At least not very often. It won't start pulling until 2,500 and wouldn't quit through about 6,500, I'd guess. Schneider has a solid grind a little milder that would work better in a truck you're planning on driving vs. idling at the stop light.
Everybody loves a lopey cam but the price is drivability. My Mustang has a 292 cam - 244 degrees at .050" - and it sounds awesome idling at 1,100 rpm. It totes the mail too. But it weighs half a ton less than a truck, on 25" tires, with 3.90 gears. I'll be happier when I swap in 4.10s.
Of course a lot of people mistake lope for choppiness from running the idle too low.
Nobody uses them anymore because it's noisy and the rockers require periodic adjustment. OTOH, it's doubtful you'll ever run a cam that big at enough rpm to make it worthwhile. At least not very often. It won't start pulling until 2,500 and wouldn't quit through about 6,500, I'd guess. Schneider has a solid grind a little milder that would work better in a truck you're planning on driving vs. idling at the stop light.
Everybody loves a lopey cam but the price is drivability. My Mustang has a 292 cam - 244 degrees at .050" - and it sounds awesome idling at 1,100 rpm. It totes the mail too. But it weighs half a ton less than a truck, on 25" tires, with 3.90 gears. I'll be happier when I swap in 4.10s.
Of course a lot of people mistake lope for choppiness from running the idle too low.
Lead Driver
Joined: Mar 2008
Posts: 7,182
Likes: 380
From: Near Los Angeles
Picking a cam is a lot more than just picking one that sounds good. That system is for fools. You have to decide what you want to use the engine for. Weigh in rear gears, have much vacuum you need, torque converter (if auto trans), your ideal mpg, and the range where you desire your power.
Summit Racing has a good tech section article to help with cam selection: 'Bump Stick Basics,' that may be helpful.
The Comp 268 cam is very lumpy with a loping sound. You can google that one or any of the cams out there. It is nice to hear them on youtube.
Summit Racing has a good tech section article to help with cam selection: 'Bump Stick Basics,' that may be helpful.
The Comp 268 cam is very lumpy with a loping sound. You can google that one or any of the cams out there. It is nice to hear them on youtube.
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Laughing Gas
Joined: Dec 2010
Posts: 924
Likes: 1
I just read it F250 very helpful i just chose the right cam! i know you recommended the 262 isky but the crower 19212 provides a little bit more LSA and im gonna want that engine vaccum for the power brakes, it also provides a bit more power in the mid range area.
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Lead Driver
Joined: Mar 2008
Posts: 7,182
Likes: 380
From: Near Los Angeles
Don't PM me any more. You can find the answers yourself now.
This might help you: Generally, a cam with wider LSA (112-116 degrees) offers less overlap between intake and exhaust opening and closing events. That translates into a wider rpm range, better idle quality, and higher engine vacuum, but at the cost of less torque at low and midrange rpm. A cam with a narrow LSA (104-108 degrees) offers greater low and midrange torque production, but with a narrower operating range, a choppy idle, and less engine vacuum.
For the street, you want a cam that offers a compromise--decent idle quality, respectable vacuum for operating power brakes and such, and good overall power production. separation. Again, much depends on the overall engine combination and intended use, but as a general rule, cams with a 110 to 112 degree LSA offer good power and decent street manners.
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