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Re: Ever use a Comp Cams XE268H in a BB?
[Re: Boise Chall]
#869829
12/03/10 01:56 AM
12/03/10 01:56 AM
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Joined: Mar 2005
Posts: 1,630
North Central Florida
eightlitermopar
top fuel
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top fuel
Joined: Mar 2005
Posts: 1,630
North Central Florida
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My brother had one in a loaner motor I gave him. Low compression 78 440. Headers, hot ignition, and 2800 rated stall converter, 3.91 rear in a 69 Bbody.
It was fun to drive and pulled hard, but the compression was low and the rings were crap (oil started to have a gas smell)
Anyway, best run was shocking at 14.5 seconds in the quarter. It definately felt like it pulled harder than that...but....for a street car, its a good choice.
He was offended at the 14.5 timeslip, so he got a 493 eddy headed stroker!
eight
Mopar or no car
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: eightlitermopar]
#869830
12/03/10 12:33 PM
12/03/10 12:33 PM
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Joined: Jul 2006
Posts: 383
Essex, Ont., Canada
Fishmarket
enthusiast
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enthusiast
Joined: Jul 2006
Posts: 383
Essex, Ont., Canada
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I've got one in a 383 stroked to 432. Stock heads, home ported with 2.14/1.81 valves, holley street dominator intake and a holley 750, 9.2 to 1 compression. Engine made 430 horsepower and 470 foot pounds of torque on a DTS dyno. If i did it again i would go with the XE275HL or preferrably a hydraulic roller.
1972 Plymouth Cuda 340 4 speed
1971 Plymouth Road Runner 383 Auto
1970 Plymouth Duster /6 Auto
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: Fishmarket]
#869831
12/03/10 02:00 PM
12/03/10 02:00 PM
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Joined: Feb 2003
Posts: 12,675
Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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Two of them in customer's cars. They run very well.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: moper]
#869832
12/03/10 09:48 PM
12/03/10 09:48 PM
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Joined: Jun 2008
Posts: 565
IA
landon1
mopar
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mopar
Joined: Jun 2008
Posts: 565
IA
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have one in my 440 - i love it, but all i have to compare it to was the 35+ year old stock motor
'71 Satellite Sebring 440
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: Kern Dog]
#869834
12/03/10 11:59 PM
12/03/10 11:59 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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I'd think it'd be the cats' meow for a stockish/mild street 383....personally, it seems like most chrysler guys overcam their motors.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: patrick]
#869835
12/04/10 12:17 AM
12/04/10 12:17 AM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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Quote:
I'd think it'd be the cats' meow for a stockish/mild street 383....personally, it seems like most chrysler guys overcam their motors.
It's possible or just don't have a clue what a real cam is.
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: goldmember]
#869838
12/06/10 12:09 PM
12/06/10 12:09 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
Quote:
I'd think it'd be the cats' meow for a stockish/mild street 383....personally, it seems like most chrysler guys overcam their motors.
It's possible or just don't have a clue what a real cam is.
maybe I like to "speak softly and carry a big stick", with a decent idle and low speed manners but still able go fast vs. sounding like a super stocker but not being able to get out of it's own way
if you have good flowing heads, and a well thought out package, you don't need to have a big cam to make big power. look at the LS7 in the ZO6--505HP out of a cam that IIRC is ~218@.050, or the 5.7L hemi, IIRC comp got 460HP out of one with either a 218 or 224@.050 hyd. roller....or a number of 318 dak guys who are well into the 13's with hyd. rollers in the 212-218@.050...
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: patrick]
#869839
12/06/10 12:21 PM
12/06/10 12:21 PM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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Quote:
Quote:
Quote:
I'd think it'd be the cats' meow for a stockish/mild street 383....personally, it seems like most chrysler guys overcam their motors.
It's possible or just don't have a clue what a real cam is.
maybe I like to "speak softly and carry a big stick", with a decent idle and low speed manners but still able go fast vs. sounding like a super stocker but not being able to get out of it's own way
if you have good flowing heads, and a well thought out package, you don't need to have a big cam to make big power. look at the LS7 in the ZO6--505HP out of a cam that IIRC is ~218@.050, or the 5.7L hemi, IIRC comp got 460HP out of one with either a 218 or [Email]224@.050[/Email] hyd. roller....or a number of 318 dak guys who are well into the 13's with hyd. rollers in the [Email]212-218@.050...[/Email]
I don't want to trash the OP's post so I'll leave you to fantasy land.
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: V194]
#869840
12/06/10 03:25 PM
12/06/10 03:25 PM
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Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
Hemi Allstate
master
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master
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
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I have one in a .030" over 383.It's around 9-1 probably less. Pistons were rated at 9.2-1 and dished.I don't know the deck height. Using 906 heads, stock converter, and 3.23 gear.
This is a nice cam. Enough thump to say it's not stock. Very drivable without idle problems in gear.
I had the 474/280* purple shaft in this engine before and pulled it when the lobes went flat.
This cam has much better vacuum, drive-ability, and performance in this application.
Mark
1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: goldmember]
#869841
12/06/10 09:19 PM
12/06/10 09:19 PM
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Joined: Dec 2008
Posts: 1,200
UK
602heavy
pro stock
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pro stock
Joined: Dec 2008
Posts: 1,200
UK
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Quote:
Quote:
Quote:
Quote:
I'd think it'd be the cats' meow for a stockish/mild street 383....personally, it seems like most chrysler guys overcam their motors.
It's possible or just don't have a clue what a real cam is.
maybe I like to "speak softly and carry a big stick", with a decent idle and low speed manners but still able go fast vs. sounding like a super stocker but not being able to get out of it's own way
if you have good flowing heads, and a well thought out package, you don't need to have a big cam to make big power. look at the LS7 in the ZO6--505HP out of a cam that IIRC is ~218@.050, or the 5.7L hemi, IIRC comp got 460HP out of one with either a 218 or [Email]224@.050[/Email] hyd. roller....or a number of 318 dak guys who are well into the 13's with hyd. rollers in the [Email]212-218@.050...[/Email]
I don't want to trash the OP's post so I'll leave you to fantasy land.
Don't know about 'fantasy land' some truth in
Patricks post........motor will most likely be DOWN on power using that 268/280 split , 268/268 should get the job done. 
Lopey idle is due to int/ex split , much better manners to be had going single pattern.
Last edited by 602heavy; 12/06/10 09:26 PM.
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: 602heavy]
#869842
12/07/10 02:04 AM
12/07/10 02:04 AM
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Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
Hemi Allstate
master
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master
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
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Don't know about 'fantasy land' some truth in Patricks post........motor will most likely be DOWN on power using that 268/280 split , 268/268 should get the job done. Lopey idle is due to int/ex split , much better manners to be had going single pattern.
I guess you know that this cam is 224* and 230* @ .050" . It compares favorably to all others in the Comp Cams Cam Quest program, for this application. Including those with single pattern.
The split pattern is a good choice for use with exhaust manifolds according to the Comp Cams tech. Which is what my application is.
Also, isn't it a fairly common practice to aid the exhaust side flow, and to try and achieve near 75% of the intake flow, by increasing the lift and or duration on that side?
Mark
1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Ever use a Comp Cams XE268H in a BB?
[Re: 602heavy]
#869844
12/07/10 03:07 AM
12/07/10 03:07 AM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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Choosing a cam that would be lucky to make 1hp per cube and trying to find a link to what you can do with a late model hemi or LS is fantasy land. Either engine can be upgraded easily in the cam dept if big output is the name of the game,but you may have a little loss of idle vac,big deal IMO. I guess when you've swapped and tested cams in a vehicle and not on desktop dyno or a magazine add you see things from a different perspective. To the OP sorry to see your post pop off track. To the point, I have never ran that cam but have known others that tried it,never seen an over achiever in the bunch(obviously lots of pieces to any combo),but I'll keep my eyes open. I think in the future I'll shut up and just say you'll love it and go about my business.LOL Lot's of good tech has vanished from Moparts and other sites,wonder why?
Last edited by goldmember; 12/07/10 03:16 AM.
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