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Author
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Topic: Cam comparison
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BrentonRose
Journeyman Posts: 38
From: Avondale, Arizona
Registered: Jan 2001
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posted 06-03-2001 03:33 AM
   
Okay I have a 302 bored 30 over, 4v 68 302 heads ported and polished. Performer RPM intake, Roller Rockers 1.6 ratio. I have a Comp Cams 280 ADV 224 @ 50. with 512 lift and 110 lobe sep and 10.5 compression. If I change to a 244 @ 50 duration, and 520 lift with a 108 lobe sep, what will it run like and sound like? Is there any wave files on the net with a similiar cam? It is only a weekend cruiser. What performance diffrences will I see? Once again thanks everybody.
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richard bohm
Gearhead Posts: 370
From: tucson,az-luray,va
Registered: May 2001
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posted 06-03-2001 04:19 AM
you will gain top end performance, but you will lose on the low end especialy with the narrower lobe centers. it will also lope more than the cam you have now. if you have an auto you shouldnt need to change the converter. just remember that at low speeds the response will be a bit sluggish at first, as the rpm's rise the response will be a bit quicker.
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steve'66
Gearhead Posts: 4307
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 06-04-2001 01:39 PM
Brenton,That's a lot of cam for your engine. Unless you're planning on running 11-1 compression and spinning it into the 7000 rpm range, you'll be better off with the Comp 280 cam.  SteveW
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n2oMike
Gearhead Posts: 975
From: Spencer, WV
Registered: Jan 2001
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posted 06-04-2001 07:27 PM
The Comp 280 measures 230 @ 0.050". The 292 measures 244. I think they are both on the large side for your engine. I wouldn't think of going any larger than what you've already got. If anything, I'd go smaller.... that is, unless you are like those "Dodge Boys" that used to run around my old home town who would take a stock engine, install a huge cam and tunnel ram, and idle around town like they were some kind of Pro-Stocker. For some reason, they never could get their cars running right, and never would race anyone.  Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/motorcitymustang/cmml/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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JAAZZY
Gearhead Posts: 723
From: Bay Area, CA
Registered: Apr 2001
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posted 06-05-2001 12:46 PM
Whoops[This message has been edited by JAAZZY (edited 06-05-2001).]
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JAAZZY
Gearhead Posts: 723
From: Bay Area, CA
Registered: Apr 2001
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posted 06-05-2001 12:52 PM
I've used both though I can't remmber the difference in idle quality. I also changed several other items so it is hard to say what the cam was responsible for. I can tell you though that you won't see more power until you are over 5000 rpm. I would also say that the heads you have will probably not flow well enough to use the higher rpm power that comes with the large cam. Stay with the 280. I used the 292 with ported TFS heads with full length headers, large valves, ported intake, 5spd and fuel injection. It made good power up to around 6500 rpm. I was shifting around 6700-6800. It was not a drag car and launched so-so but was dam fast from a roll.
quote:
Originally posted by BrentonRose:
Okay I have a 302 bored 30 over, 4v 68 302 heads ported and polished. Performer RPM intake, Roller Rockers 1.6 ratio. I have a Comp Cams 280 ADV 224 @ 50. with 512 lift and 110 lobe sep and 10.5 compression. If I change to a 244 @ 50 duration, and 520 lift with a 108 lobe sep, what will it run like and sound like? Is there any wave files on the net with a similiar cam? It is only a weekend cruiser. What performance diffrences will I see? Once again thanks everybody.
------------------
65 Stang - TFS SH Stage III Heads, Nash 5 speed, Fuel Injection, etc...
2001 - Z06
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