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CC Advertisers
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05-08-2003, 07:50 PM
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CC Member
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Join Date: Mar 2002
Location: Leamington,
Ont
Cobra Make, Engine: Classic Roadster with 427 center oiler
Posts: 443
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Not Ranked
Cam lift and Duration
Not knowing alot about cam shaft profiles, I was wondering, is a cam with 640/654 lift, 254/260 dur @ 50,114 lobe seperation, too hot for a street car.
I ask because I am about to buy a 427 TO with this cam. I hope the numbers make complete sense because I just copied them down the way they were presented to me.
Paul
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05-08-2003, 08:47 PM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Could be streetable if it is stroked and has ported Edelbrock heads. Are you sure about the 114 degree lobe centers? Never heard of an agressive cam that you described with a lobe center that great. Don't get me wrong, you want a lobe center of 110 tp 112 for the street, but 114 centers are usually associated with much milder cams.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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05-08-2003, 09:10 PM
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CC Member
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Join Date: Mar 2002
Location: Leamington,
Ont
Cobra Make, Engine: Classic Roadster with 427 center oiler
Posts: 443
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Not Ranked
Hi Jeff
All I know is what is listed in the post. Here is the thread www.clubcobra.com/forums/showthread.php?s=&threadid=40799
I have already contacted the person and make arrangements for pick up.
Paul
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05-08-2003, 09:57 PM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Sounds awefully cheap. Check it out good. Solid roller on the street is very questionable. You should pull the lifters every 4,000 miles or so to check for roller and roller bearing wear. If one lifter lets loose, its all over.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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05-09-2003, 07:29 AM
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CC Member
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Join Date: Jul 2001
Location: randleman, NC,
Posts: 407
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Not Ranked
Waaaayyy too much!!!
h dog
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05-09-2003, 09:19 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
It's funny how cars often go faster with tiny cams. They might not sound as mean at idle, but you don't have to spin them up to 4500 rpm to get into the powerband. Nothing like having your cam just start to work right at the shift point. With that much duration, I hope the motor has at least 11:1 compression, it will need it.
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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05-09-2003, 10:59 AM
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Senior Club Cobra Member
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Join Date: Nov 1999
Location: Folsom,
CA
Cobra Make, Engine: ERA 623, 427 S/C Cobra. Ford FE 428 Cobra Jet, Ford Nascar TL 4speed - with a touch of raw; "less is more" theme
Posts: 3,886
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Not Ranked
well...
well... I just removed my solid lifter cam with about the same profile as the one listed above, after much consideration, testing, and repeated research. My e-Brock heads are very ported, with intake matching, high-end rockers and all...
I removed it and replaced it with one step down in duration, and dropped from .640 to .585 lift - and yahoo! Much better... the old cam sounded really roudy, but it just ran like crap under 3K rpms on twisty mountain roads. I don't drag race my car either... The new cam sounds deeper, still roudy, runs and pulls much harder in the midrange, and much more fun to drive. I'm glad I tried the big cam... Then I hated it till I changed it out. Don't get me wrong, the new cam still sounds awesome. It just runs a heck of a lot better now...and is much more FUN! Bigger isn't always better IMHO.
__________________
Duane
Western States Cobra Group 1998-2016.
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05-09-2003, 02:16 PM
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CC Member
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Join Date: Mar 2002
Location: Leamington,
Ont
Cobra Make, Engine: Classic Roadster with 427 center oiler
Posts: 443
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Not Ranked
Thank you all for your replies. I appreciate any input that might help me decide.
Decooney - could you please give me more details on the specs of your new cam. It sounds like something I would want.
Thanks again
Paul
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05-09-2003, 04:48 PM
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Senior Club Cobra Member
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Join Date: Nov 1999
Location: Folsom,
CA
Cobra Make, Engine: ERA 623, 427 S/C Cobra. Ford FE 428 Cobra Jet, Ford Nascar TL 4speed - with a touch of raw; "less is more" theme
Posts: 3,886
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Not Ranked
cobra427mnsi ,
I sent an email to you through your profile with the specs.
Remember, as per your profile... if you are running a 406, a larger cam in a smaller displacement motor will be even more radical in a 406 FE as compared to a 427 or 427.
__________________
Duane
Western States Cobra Group 1998-2016.
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