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Joined: Mar 2011
Posts: 68
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Joined: Mar 2011
Posts: 68 |
I've narrowed it down to two choices for the cam I want to install. Either the Comp Cams XE268H .477 intake, .480 exhaust, duration at .050: 224 intake & 230 exhaust or I'm also considering the Comp Cams factory muscle cam for the ram air IV, with probably using the non-ram air rockers, intake & exhaust lift .470, duration at .050: 230 intake & 240 exhaust. Decent choices?
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Joined: Aug 2002
Posts: 7,495 Likes: 1
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Premium Member
Joined: Aug 2002
Posts: 7,495 Likes: 1 |
Dude, it's kind of like saying which shade of blue do you like best? Seriously there are so many things that factor into cam choice there's about a million and a half choices depending on your circumstances. I've heard not to go over 226@.050 unless you're building a race car but buy what you want. Changing it out for something better isn't that hard. Check out this article. Maybe it will help. http://www.thepontiactransampage.com/engineblueprint.html
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Joined: Oct 2003
Posts: 1,770
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Joined: Oct 2003
Posts: 1,770 |
I almost went with the XE268, but decided on the Summit #2802 instead. Robert is right about the # of options. Really depends on what you are building. The #2802 is a good all around, and for the price you can't beat it.
Also heard some good things about this Cam from folks in the local cruisin tigers GTO club that I am involved with.
1969 Firebird conv't A/C 400 4-Speed
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Joined: Aug 2002
Posts: 7,495 Likes: 1
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Premium Member
Joined: Aug 2002
Posts: 7,495 Likes: 1 |
I ran the 2801 for awhile and was thoroughly unimpressed but did have the best 1/4 mi time ever with that motor so it just goes to show that bigger, louder, rougher isn't always better.
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Joined: Mar 2011
Posts: 68
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Joined: Mar 2011
Posts: 68 |
yeah, I hate asking for cam recommendations. No one around where I live is a Pontiac guy so there's really no one to ask around here. Me being a Mustang guy, if you ask me a cam recommendation for a 351 Cleveland I can go all nite with different cams & specs. The Comp Cams looked good "on paper", just wanted some insight if anyone actually used it. Thanks guys.
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Joined: May 2001
Posts: 3,615
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Premium Member
Joined: May 2001
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I'm a hobbyist. Not a professional. Don't be hatin'!
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Joined: Jul 2010
Posts: 214
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Joined: Jul 2010
Posts: 214 |
Ken Keefer put a Comp Cams XE274H in mine (230/236 488/491).
Car just hit the road today for the first time in 9 months. About to go to the garage and give it a listen. Not sure how the feel will be yet.
1968 Firebird 400 Convertible Original: Engine, Intake manifold, Heads, Body, Stereo, 3.08. THM400. Engine rebuilt by Ken Keefer early 2012. New: Holley 4bbl 670 HP, hidden iPod setup, RobbMC mini starter, A/C, front disc brakes 
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Joined: Jul 2010
Posts: 214
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Joined: Jul 2010
Posts: 214 |
Checked it out today with the XE274H. Sounds like a mild muscle car. Not modern smooth... but not super lopey or radical. Didn't check manifold vacuum yet.
You hear the cam at 500rpm.
1968 Firebird 400 Convertible Original: Engine, Intake manifold, Heads, Body, Stereo, 3.08. THM400. Engine rebuilt by Ken Keefer early 2012. New: Holley 4bbl 670 HP, hidden iPod setup, RobbMC mini starter, A/C, front disc brakes
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