Anyone here using Comp Cam XE275HL

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duster360

duster360

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Anyone here running a Comp Cam XE275HL camshaft in a small block?
 
duster360 said:
Anyone here running a Comp Cam XE275HL camshaft in a small block?
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I have it for my rb, though am yet to put it together....whats your question?
HotRod did a a cam change using a 3 year old build w RPM heads made 560/620 on a well worn 440...
 
All the cams I have had in the past were cut on a 112* lobe separation. The XE275HL has a 110* and idles way rougher ( engine shake ) than my other cams. Looking to see if someone might have a video of their engine idling with this cam to make sure I don't have any kind of issues.
 
duster360 said:
All the cams I have had in the past were cut on a 112* lobe separation. The XE275HL has a 110* and idles way rougher ( engine shake ) than my other cams. Looking to see if someone might have a video of their engine idling with this cam to make sure I don't have any kind of issues.
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I have a 274-S solid cam. It's 110. But I'm running it in a 4" 416 motor that soaks up cam.
 
so its not a direct answer to your question, when i bought my car last year it had the XE285HL cam in it, which is a bit more lift then what you have, plus 1.6 roller rockers. it is a rough idle, i do have a video i can give you of this setup. but it my initial fire up on the fitech and i still have to adjust the iac to get the rpm's down, the video is 1200 rpms or so. just let me know.

Kris

(for what its worth i think the cam you have is a better street cam then the one i have, when i do a rebuild i will be going in another direction with the setup)
 
i do know this guy here has got this cam, its a .030" over 360.



I´planned to put it into my brothers Magnum headed 340, but unfortunately the springs are not suitable for the Lift with 1.6 rockers (coil bind).

Michael
 
kris hines said:
so its not a direct answer to your question, when i bought my car last year it had the XE285HL cam in it, which is a bit more lift then what you have, plus 1.6 roller rockers. it is a rough idle, i do have a video i can give you of this setup. but it my initial fire up on the fitech and i still have to adjust the iac to get the rpm's down, the video is 1200 rpms or so. just let me know.

Kris

(for what its worth i think the cam you have is a better street cam then the one i have, when i do a rebuild i will be going in another direction with the setup)
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Yes, I would like to se the video.
 
360duster said:
i do know this guy here has got this cam, its a .030" over 360.



I´planned to put it into my brothers Magnum headed 340, but unfortunately the springs are not suitable for the Lift with 1.6 rockers (coil bind).

Michael
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Thanks for the video. That I what I needed. It shakes like mine. Guess I am not used to that 110* lobe separation.
 
sorry, no video of the engine bay, i may be able to get one this weekend when i start tuning on the fitech.
 
kris hines said:
sorry, no video of the engine bay, i may be able to get one this weekend when i start tuning on the fitech.
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No worries here. Sounds good. Yes, post an underhood once you get it sorted out. I am jealous of the Strange 60 under there.
 
duster360 said:
No worries here. Sounds good. Yes, post an underhood once you get it sorted out. I am jealous of the Strange 60 under there.
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thanks man, an will do! the strange is definitely a beast, probably way overkill, but rather be overkill than no kill.........LOL
 
duster360 said:
Thanks for the video. That I what I needed. It shakes like mine. Guess I am not used to that 110* lobe separation.
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I've seen people order a XE cam directly from Comp and have it custom ground on a 112* centerline. Loose a little power. But on the street with a stock type suspension, probably not going to be able to put all that power to the ground anyways. Easier to tune at idle, easier to tune "off-idle" just putting around town. And just calmer idle.
 
autoxcuda said:
I've seen people order a XE cam directly from Comp and have it custom ground on a 112* centerline. Loose a little power. But on the street with a stock type suspension, probably not going to be able to put all that power to the ground anyways. Easier to tune at idle, easier to tune "off-idle" just putting around town. And just calmer idle.
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After driving it, I can see why they would do that. My car is a 4 speed, so it is a little jumpy at times.
 
duster360 said:
After driving it, I can see why they would do that. My car is a 4 speed, so it is a little jumpy at times.
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I have a Barry grant silver claw carb with adjustable throttle blades. Adjusting the blade position exposes the idle slot and helps adjust off idle stumble. That and float adjustment helped a lot with tuning. Also going from champions to autolites helped me a tad and seemed to last longer.
 
autoxcuda said:
I have a Barry grant silver claw carb with adjustable throttle blades. Adjusting the blade position exposes the idle slot and helps adjust off idle stumble. That and float adjustment helped a lot with tuning. Also going from champions to autolites helped me a tad and seemed to last longer.
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Glad you brought that up. Earlier today I was reading ajforms T-port sync article.
 
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