Anyone using Comp Cams "High Energy" 268H?

84convertablegt · Nov 5, 2008

I'm considering a camshaft change. Right now, I have a bone stock 65 289 4V with an Edelbrock carb. I'm trying to be realistic about my cam choice. I want the sound but also don't want to change heads, springs, etc.

Here's the combo I'm considering.
-Comp Cams 31-218-2 268H Comp Cams 31-218-2 - Comp Cams 'High Energy' Hydraulic Flat Tappet Camshafts - JEGS
-Summit High Rise Intake Manifold (Basically an F4B or Cobra or Performer RPM, all the same)
-Holley S.A. 670
-Stock 289 heads (pre-66)

Cam Specs Below:

Operating Range: 1500-5500 RPM
Duration Advertised: 268° Intake / 268° Exhaust
Duration @ .050'' Lift: 218° Intake / 218° Exhaust
Valve Lift w/1.6 Rockers: .456'' Intake / .456'' Exhaust
Lobe Separation Angle: 110°

Anyone else have this cam? The notes say "noticeable idle" so I'm hoping you will be able to hear it. I'm really not trying to build a race car here, just a nice cruiser that sounds like a 60's muscle car. Will this do? I can't seem to find any videos or sound clips of cars with this cam...

thexrcist68 · Nov 5, 2008

ive been running that camshaft for 2 years now, and its been pretty good.
its a lil small for my setup now, so im sure itll be great for stock heads,
upgraded springs are probably still a good idea,
ill post ya a vid of the idle when i get home later

SadbutTrue · Nov 5, 2008

84convertablegt said:
I'm considering a camshaft change. Right now, I have a bone stock 65 289 4V with an Edelbrock carb. I'm trying to be realistic about my cam choice. I want the sound but also don't want to change heads, springs, etc.

Here's the combo I'm considering.
-Comp Cams 31-218-2 268H Comp Cams 31-218-2 - Comp Cams 'High Energy' Hydraulic Flat Tappet Camshafts - JEGS
-Summit High Rise Intake Manifold (Basically an F4B or Cobra or Performer RPM, all the same)
-Holley S.A. 670
-Stock 289 heads (pre-66)

Cam Specs Below:

Operating Range: 1500-5500 RPM
Duration Advertised: 268° Intake / 268° Exhaust
Duration @ .050'' Lift: 218° Intake / 218° Exhaust
Valve Lift w/1.6 Rockers: .456'' Intake / .456'' Exhaust
Lobe Separation Angle: 110°

Anyone else have this cam? The notes say "noticeable idle" so I'm hoping you will be able to hear it. I'm really not trying to build a race car here, just a nice cruiser that sounds like a 60's muscle car. Will this do? I can't seem to find any videos or sound clips of cars with this cam...

If you're just trying for sound, you may want to look into Compcam's new(er) Thumper line. They're basically designed for exactly what you just said you wanted. However, now that I think about it when I was doing my cam swap they only had them for small chevy's, so that might not be an option.

Of the older cam lines, I believe the Magnums were supposed to be lumpier than the High Energy ones, so you migth want to ask about the Magnum 270H. Just looking at the 270H's #'s (1800-5800, 270/270, 224/224, .500/.500, 110 LSA), it looks slightly more agressive than the 268H and I think will sound a bit lumpier.

The Xtreme energy line will probably make the most power but, as I can attest to, they aren't very 'lumpy'. They sound mean, to be sure, but in a slightly different way.

One small advantage to the 268H over the 270H is that the 268's lift shouldn't require you to change out any valvetrain components (springs, rockers, etc). Most cam manufacturers tell you to get an adjustable (ie roller & stud) drivetrain if you get above .470 lift, and the 268H is about as close as you can get.

69gmachine · Nov 5, 2008

I put a 268H in a couple of 302s back around 1980. One was in a '67 Galaxy and the other was in a 75 Maverick. It's a great little cam, perfect for a 302 or 289. Very streetable, yet a noticeable idle (especially on a 289) and a lot more power than the stock cam. With a properly sized carb (I'd go with an Autolite 470) you will have great throttle response. The Maverick was an absolute blast as it was much lighter than the big Galaxy.

84convertablegt · Nov 5, 2008

thanks for all the replies. i found this video on you tube YouTube - 1968 Mustang Coupe 302 - First Start and it sounds good to me.
thexrcist68, id be interested in seeing that video!

htwheelz67 · Nov 5, 2008

excellent cam even by todays standards, good low end, great power and mileage, slight lope on 289-302's and even 351w's and very easy on the valve train, can be use with stock heads.

The only thing to be careful about is not to run more than 9-9.5 compession or they will ping like crazy unless you back off timing an then no power.

68converted · Nov 5, 2008

I have the Xtream Energy 270 version and it is sweet. Nice low end torque, and it sounds sweet with Dynomax Super Turbos.

Then again, mine's a bit more modified, roller and EFI... so maybe not a good comparison???

thexrcist68 · Nov 6, 2008

850 rpm idle w/ summit glasspacks
View attachment 292617

84convertablegt · Nov 6, 2008

sounds great

ratio411 · Nov 6, 2008

Here's the Lunati version of that cam.
It is same exact specs, but has a tiny bit more gross lift.
http://mmb.maverick.to/gallery/misc.php?do=downloadfile&i=2767

mattj25 · Nov 20, 2008

84convertablegt · Nov 20, 2008

mattj25 said:
hey man I'm running that in my 289 right now. Check out my cardomain site http://www.cardomain.com/ride/2608616. I have some sound clips on there. Good luck man. Matt

That's a nice car. Nice to see other younger guys like myself interested in the old Mustangs.

Anyone using Comp Cams "High Energy" 268H?

84convertablegt

New Member

thexrcist68

New Member

SadbutTrue

69gmachine

Member

84convertablegt

New Member

htwheelz67

Member

68converted

Member

thexrcist68

New Member

84convertablegt

New Member

ratio411

mattj25

New Member

84convertablegt

New Member

Similar threads

Anyone using Comp Cams "High Energy" 268H?

New Member

New Member

Member

New Member

Member

Member

New Member

New Member

New Member

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency