adamforsythe
1/2 ton status
Post your cam Duration at .050 and tell us what you use your rig for and what it sounds like.
Thanks
Adam
Thanks
Adam
CK5
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Lets see your Duration
- Thread starter adamforsythe
- Start date
slowk5
Registered Member
I have a lunati 4x4 cam,204 intake and 216 exhaust,in a mild 350.It has really good off idle power,but falls off after 4500 rpm,Thats ok its not a race car.It work for now.Think when i get a 454,ill go for a comp 268
BranndonC
3/4 ton status
Advertised duration range 270-285 Duration @ .050 range 220-228 Valve lift range .525"-.538"
heres what it sounds like at idle
http://media.putfile.com/walking-around-it-
and heres a little throttle
http://media.putfile.com/testing-truck-test-1
heres what it sounds like at idle
http://media.putfile.com/walking-around-it-
and heres a little throttle
http://media.putfile.com/testing-truck-test-1
mountainexplorer
1/2 ton status
Comp High Energy 268 in a 454; 268 advertised duration, 218 @.050, .485 lift. Had a good sound at idle with 3" Flowmasters. Good all around cam. Did notice it didn't have all it's power right off idle but over 1500 it opened up and moved good... did mud and trails with it.
http://video.google.com/videoplay?docid=3109452006178225322&q=Orange+Blazer
Comp 280 Magnum in a 396; 280 advertised, 230 @.050, .520 lift. Nice and lopey in the 396 with header dumps open (hard to tell in the video- was putting around in low gear). This motor was in a fullsize Crew Cab on 40s before I swapped it into the Truck Blazer. It liked higher rpms. Not a good towing or low rpm cam. This motor would have screamed in a lighter car.
http://video.google.com/videoplay?docid=4945735816469301553&q=Mud
Reground cam similar to Isky 280 specs in a 350. Not sure on the exact specs.
http://video.google.com/videoplay?docid=-9105210672167082416&q=Blazer
http://video.google.com/videoplay?docid=3109452006178225322&q=Orange+Blazer
Comp 280 Magnum in a 396; 280 advertised, 230 @.050, .520 lift. Nice and lopey in the 396 with header dumps open (hard to tell in the video- was putting around in low gear). This motor was in a fullsize Crew Cab on 40s before I swapped it into the Truck Blazer. It liked higher rpms. Not a good towing or low rpm cam. This motor would have screamed in a lighter car.
http://video.google.com/videoplay?docid=4945735816469301553&q=Mud
Reground cam similar to Isky 280 specs in a 350. Not sure on the exact specs.
http://video.google.com/videoplay?docid=-9105210672167082416&q=Blazer
theperfectgarage
1/2 ton status
comp cam # 12-238-2 duration at .050 = 218/224 in about a 5500lb. k5 / 456 tranny/208 t-case 34 " tires . dd and trails, rocks. Got it runnin thru a pair of flowmasters with a " H " pipe. It sounds flat awesome and when I punch it in third gear at about 35mph and wind her out to about 4800 rpm to grab fourth passengers scream and children on the sidewalk cry and run home.
I'ts no prob. on the trail cause I'm geard pretty low, Around town I would do better one step up the page, she would pull harder off the line. But it sure sounds bitchen. P.S., the rest of the engine is edelbrock rpm intake w/ edel carb and world s/r torquer heads w/ roller tip rockers and 2.020/1.60 valves.
I'ts no prob. on the trail cause I'm geard pretty low, Around town I would do better one step up the page, she would pull harder off the line. But it sure sounds bitchen. P.S., the rest of the engine is edelbrock rpm intake w/ edel carb and world s/r torquer heads w/ roller tip rockers and 2.020/1.60 valves.
Burt4x4
1 Ton First Gen
454
Comp cam 11-231-3
Dur @ .05 = intake 210 Exhaust 218
Lobe lift = .297/.297
sepration = 111
(I have a printout)
Sounds great runs great
Comp cam 11-231-3
Dur @ .05 = intake 210 Exhaust 218
Lobe lift = .297/.297
sepration = 111
(I have a printout)
Sounds great runs great
i run a compcam xtreme energy 4x4cam 12-243-3, avertised duration @ 050 270int./278exh. lift .480/.498. with edelbrock tbi performer intake , summit headers, hooker exh. gotta order a custim chip. it has a purdy big lope, this is still my dd but take offroad as much as possible
adamforsythe
1/2 ton status
That is the same cam I am going to put in my 350.
lamberthkp said:i run a compcam xtreme energy 4x4cam 12-243-3, avertised duration @ 050 270int./278exh. lift .480/.498. with edelbrock tbi performer intake , summit headers, hooker exh. gotta order a custim chip. it has a purdy big lope, this is still my dd but take offroad as much as possible
im very happy with the cam i chose performs how i want it to and sounds awsome. 
muscle
1/2 ton status
Chevy 400 sb
Comp Cams - Duration: @ .050 214/224 Lift .443 .465
along with 9 1/2 to 1 pistons, balanced, 1.95" intake, 1.75" ex, port & pol.
low end good, really comes alive at 2100 all through 5000. a little lopey but sounds bitchin at idle and 5000 rpm.
Comp Cams - Duration: @ .050 214/224 Lift .443 .465
along with 9 1/2 to 1 pistons, balanced, 1.95" intake, 1.75" ex, port & pol.
low end good, really comes alive at 2100 all through 5000. a little lopey but sounds bitchin at idle and 5000 rpm.
55Willy
3/4 ton status
comp cam XE-284h-10
dur @ .50 is .240 - .246
lift is .507-.510
it's in a 383 with dart 2 iron eagles 2.02's and just shy of 10 to 1 flat top slugs
dur @ .50 is .240 - .246
lift is .507-.510
it's in a 383 with dart 2 iron eagles 2.02's and just shy of 10 to 1 flat top slugs
jaredmajor
Registered Member
comp cams XE-268h
dur @ .050 218 218
in a slightly modified 350, nice idle, sounds good
dur @ .050 218 218
in a slightly modified 350, nice idle, sounds good
1985_K5_Silverado
1/2 ton status
At .050:
Duration
Intake 204
Exhaust 214
Lift at cam
Intake 280
Exhaust 295
Lobe dep deg 112
Just barely lumpy at idle, great pull from way down low, excellent streetability.
Duration
Intake 204
Exhaust 214
Lift at cam
Intake 280
Exhaust 295
Lobe dep deg 112
Just barely lumpy at idle, great pull from way down low, excellent streetability.
trailblazr81
1/2 ton status
230/236 @ .050 with .490 lift with 1.6 roller rockers. 388 with aluminum heads and 10:1 Comp. The lopey idle with Gear drive is sick sounding at 800RPM. Mixed with the super low sounding exhaust it 1000 RPM and just mean sounding up til 6000 RPM. I have an Edelbrock RPM air gap and BG Speed Demon carb. Its awesome till you get at some bad angles. The motor was originally intended for a 72 Nova, but then got tweaked a little bit and put into the K20.
Mixed with the super low sounding exhaust it 1000 RPM and just mean sounding up til 6000 RPM. I have an Edelbrock RPM air gap and BG Speed Demon carb. Its awesome till you get at some bad angles. The motor was originally intended for a 72 Nova, but then got tweaked a little bit and put into the K20.
Comp Cams 270H 224/224 duration at 0.050 and 0.470 lift
Had a decent lope to it, loved the 1200-4000 rpm range. Pretty good for running through mudholes. Got plenty of comments on it after the cam swap "We thought we heard something bigger tearing through that hole back there."
Had a decent lope to it, loved the 1200-4000 rpm range. Pretty good for running through mudholes. Got plenty of comments on it after the cam swap "We thought we heard something bigger tearing through that hole back there."
When my K25 was still just a 2wd truck, I ran a comp cams XE262-H in it. The specs were 218 224 @.050 .462 .469 lift and 110 LSA. That cam, matched with flat topped pistons, stock smogger heads, stock intake and stock Q-jet, had that engine pulling pretty good from about 1300 up to about 4500 when the stock stuff ran outta breath.
It had a wicked idle, just enough that you could tell it wasn't stock, but smooth enough that all the vaccum dependant systems still worked properly.
However, with the 110 LSA, that cam and my TPI don't get along too well, gets what I like to call a phantom lean condition at an idle. Basically, at an idle, the 110 LSA lets fresh air from the intake striaght into the exhaust, which makes the 02 sensor report a non-existant extreme lean condition. Cause the ECM to run full enrichment in an attempt to compensate, which makes the engine run extremely rich at an idle, and idle very poorly.
So, I plan to take the 262 out, and slap it into my 77 step side later on this spring, and put a comp cams EFI XE256-H in instead.
Has specs of 212 218 @.050 .449 .456 lift and 112 LSA. It'll probally idle glass smooth, but it is far more appropriately matched to my TPI intake, makes phenominal torque from 1000 rpm to 5000 or so, which is what the TPI is designed for. With the 112 LSA, I shouldn't have any issues with my engine running poorly at an idle, and I'll only need to do very mild prom changes just to make it perfect for my engine.
It had a wicked idle, just enough that you could tell it wasn't stock, but smooth enough that all the vaccum dependant systems still worked properly.
However, with the 110 LSA, that cam and my TPI don't get along too well, gets what I like to call a phantom lean condition at an idle. Basically, at an idle, the 110 LSA lets fresh air from the intake striaght into the exhaust, which makes the 02 sensor report a non-existant extreme lean condition. Cause the ECM to run full enrichment in an attempt to compensate, which makes the engine run extremely rich at an idle, and idle very poorly.
So, I plan to take the 262 out, and slap it into my 77 step side later on this spring, and put a comp cams EFI XE256-H in instead.
Has specs of 212 218 @.050 .449 .456 lift and 112 LSA. It'll probally idle glass smooth, but it is far more appropriately matched to my TPI intake, makes phenominal torque from 1000 rpm to 5000 or so, which is what the TPI is designed for. With the 112 LSA, I shouldn't have any issues with my engine running poorly at an idle, and I'll only need to do very mild prom changes just to make it perfect for my engine.
Yukon Jack
1/2 ton status
My Crane Cam specs for the 454 in my 69 K20 are:
My truck doesn't have a specific use, I use it to haul trailers sometimes, to get to work at least once a week, and it also scares women and young children occasionally.
Here is what it sounds like from in the cab accelerating.
http://yukon.b0xen.us/audio/acceleration20.mp3
My truck doesn't have a specific use, I use it to haul trailers sometimes, to get to work at least once a week, and it also scares women and young children occasionally.
Here is what it sounds like from in the cab accelerating.
http://yukon.b0xen.us/audio/acceleration20.mp3
I went with a Rhoads cam and lifter set.
440”intake, .460” exhaust.
Duration at .050” lift is 218 degrees intake, 227 degrees exhaust
Advertised duration of 293 degrees intake, 306 degrees exhaust
It has a nice lope to it, with excellant low and mid range power. I can fry the 33"tires even with 3.08 gears.
Pulls real well all the way to 6500 rpm, I need to get a rev limiter though as it will hit 7K .
Sounds realy nice with the 40 series Flowmasters and 2.5" pipes.
440”intake, .460” exhaust.
Duration at .050” lift is 218 degrees intake, 227 degrees exhaust
Advertised duration of 293 degrees intake, 306 degrees exhaust
It has a nice lope to it, with excellant low and mid range power. I can fry the 33"tires even with 3.08 gears.
Pulls real well all the way to 6500 rpm, I need to get a rev limiter though as it will hit 7K .
Sounds realy nice with the 40 series Flowmasters and 2.5" pipes.
walla2k5
1/2 ton status
Used in the mud on trails and even a little snow.Awsome power,nice lopey idle. Magnum 280H.
http://www.compcams.com/Base/Multihttp://www.compcams.com/Base/MultiMedia/SoundBytes/CompCams280.mp3Media/SoundBytes/CompCams280.mp3
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262ci-400ci
8cyl. [/FONT][FONT=Arial, Helvetica, sans-serif]Grind Number [/FONT][FONT=Arial, Helvetica, sans-serif]CS 280H-10 [/FONT][FONT=Arial, Helvetica, sans-serif]Description[/FONT][FONT=Arial, Helvetica, sans-serif]Intake[/FONT][FONT=Arial, Helvetica, sans-serif]Exhaust[/FONT][FONT=Arial, Helvetica, sans-serif]Valve Adjustment[/FONT][FONT=Arial, Helvetica, sans-serif]0 [/FONT][FONT=Arial, Helvetica, sans-serif]0 [/FONT][FONT=Arial, Helvetica, sans-serif]Gross Valve Lift[/FONT][FONT=Arial, Helvetica, sans-serif]0.48 [/FONT][FONT=Arial, Helvetica, sans-serif]0.48 [/FONT][FONT=Arial, Helvetica, sans-serif]Duration At 0.006 Tappet Lift[/FONT][FONT=Arial, Helvetica, sans-serif]280 [/FONT][FONT=Arial, Helvetica, sans-serif]280 [/FONT][FONT=Arial, Helvetica, sans-serif]Valve Timing At 0.006 [/FONT][FONT=Arial, Helvetica, sans-serif]Open[/FONT][FONT=Arial, Helvetica, sans-serif]Close[/FONT][FONT=Arial, Helvetica, sans-serif]Intake[/FONT][FONT=Arial, Helvetica, sans-serif]34 [/FONT][FONT=Arial, Helvetica, sans-serif]66 [/FONT][FONT=Arial, Helvetica, sans-serif]Exhaust[/FONT][FONT=Arial, Helvetica, sans-serif]74 [/FONT][FONT=Arial, Helvetica, sans-serif]26 [/FONT][FONT=Arial, Helvetica, sans-serif]These Specs Are For The Cam Installed At 106 Intake CL[/FONT][FONT=Arial, Helvetica, sans-serif]Intake[/FONT][FONT=Arial, Helvetica, sans-serif]Exhaust[/FONT][FONT=Arial, Helvetica, sans-serif]Duration At 0.05 [/FONT][FONT=Arial, Helvetica, sans-serif]230 [/FONT][FONT=Arial, Helvetica, sans-serif]230 [/FONT][FONT=Arial, Helvetica, sans-serif]Lobe Lift[/FONT][FONT=Arial, Helvetica, sans-serif]0.32 [/FONT][FONT=Arial, Helvetica, sans-serif]0.32 [/FONT][FONT=Arial, Helvetica, sans-serif]Lobe Separation[/FONT][FONT=Arial, Helvetica, sans-serif]110 [/FONT][FONT=Arial, Helvetica, sans-serif]Recommended Valve Springs[/FONT][FONT=Arial, Helvetica, sans-serif]981-16[/FONT]
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http://www.compcams.com/Base/Multihttp://www.compcams.com/Base/MultiMedia/SoundBytes/CompCams280.mp3Media/SoundBytes/CompCams280.mp3
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8cyl. [/FONT][FONT=Arial, Helvetica, sans-serif]Grind Number [/FONT][FONT=Arial, Helvetica, sans-serif]CS 280H-10 [/FONT][FONT=Arial, Helvetica, sans-serif]Description[/FONT][FONT=Arial, Helvetica, sans-serif]Intake[/FONT][FONT=Arial, Helvetica, sans-serif]Exhaust[/FONT][FONT=Arial, Helvetica, sans-serif]Valve Adjustment[/FONT][FONT=Arial, Helvetica, sans-serif]0 [/FONT][FONT=Arial, Helvetica, sans-serif]0 [/FONT][FONT=Arial, Helvetica, sans-serif]Gross Valve Lift[/FONT][FONT=Arial, Helvetica, sans-serif]0.48 [/FONT][FONT=Arial, Helvetica, sans-serif]0.48 [/FONT][FONT=Arial, Helvetica, sans-serif]Duration At 0.006 Tappet Lift[/FONT][FONT=Arial, Helvetica, sans-serif]280 [/FONT][FONT=Arial, Helvetica, sans-serif]280 [/FONT][FONT=Arial, Helvetica, sans-serif]Valve Timing At 0.006 [/FONT][FONT=Arial, Helvetica, sans-serif]Open[/FONT][FONT=Arial, Helvetica, sans-serif]Close[/FONT][FONT=Arial, Helvetica, sans-serif]Intake[/FONT][FONT=Arial, Helvetica, sans-serif]34 [/FONT][FONT=Arial, Helvetica, sans-serif]66 [/FONT][FONT=Arial, Helvetica, sans-serif]Exhaust[/FONT][FONT=Arial, Helvetica, sans-serif]74 [/FONT][FONT=Arial, Helvetica, sans-serif]26 [/FONT][FONT=Arial, Helvetica, sans-serif]These Specs Are For The Cam Installed At 106 Intake CL[/FONT][FONT=Arial, Helvetica, sans-serif]Intake[/FONT][FONT=Arial, Helvetica, sans-serif]Exhaust[/FONT][FONT=Arial, Helvetica, sans-serif]Duration At 0.05 [/FONT][FONT=Arial, Helvetica, sans-serif]230 [/FONT][FONT=Arial, Helvetica, sans-serif]230 [/FONT][FONT=Arial, Helvetica, sans-serif]Lobe Lift[/FONT][FONT=Arial, Helvetica, sans-serif]0.32 [/FONT][FONT=Arial, Helvetica, sans-serif]0.32 [/FONT][FONT=Arial, Helvetica, sans-serif]Lobe Separation[/FONT][FONT=Arial, Helvetica, sans-serif]110 [/FONT][FONT=Arial, Helvetica, sans-serif]Recommended Valve Springs[/FONT][FONT=Arial, Helvetica, sans-serif]981-16[/FONT]
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