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Discussion Starter · #1 ·
Hey guys, stuck between two cams from Howards and am looking for a high torque cam that can pull to 5000 ish. Would have a 2000 stall converter headers, aftermarket intake etc, 3.55 to 3.73 gears (not sur yet), on more or less a 4000lb vehicle. Largely street driven.

Cam 220235-10S:
Duration: 266/270
Lift: 517/538
Lsa:110
CA: 106

Cam 221275-08S:
Duration: 270/278
Lift: 528/533
Lsa:108 OR 110
CA: 104 or 106 (respectively)

Or what would you guys reccomend?

Thanks,
 

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Discussion Starter · #3 ·
Do you know the duration at .050" for those cams?
Sorry, Ill correct it:
Cam 220235-10S:
Duration: 266/270
at .05: 213/217
Lift: 517/528
Lsa:110
CA: 106

Cam 221275-08S:
Duration: 270/278
at .05: 217/225
Lift: 528/533
Lsa:108 OR 110
CA: 104 or 106 (respectively)

Also open to suggestions.
 

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Discussion Starter · #5 ·

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there is no ROUGHLY here. Buying the wrong cam because you didn't want to do your homework; is rarely rewarding. We can make some small assumptions, like as-cast combustion chambers; but 9.5 with iron heads and 9.5 with aluminum heads are a lot different. Not to mention you are completely ignoring squish/quench.

With small CID motors; you need to be on your game to get the results you are looking for. You cant really hide a mistake with only 300 inches AND the desire for an engine that behaves like a 351W.

Just my .02
 

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Discussion Starter · #7 ·
there is no ROUGHLY here. Buying the wrong cam because you didn't want to do your homework; is rarely rewarding. We can make some small assumptions, like as-cast combustion chambers; but 9.5 with iron heads and 9.5 with aluminum heads are a lot different. Not to mention you are completely ignoring squish/quench.

With small CID motors; you need to be on your game to get the results you are looking for. You cant really hide a mistake with only 300 inches AND the desire for an engine that behaves like a 351W.

Just my .02
So iron heads at 9.5 (as typically stated from others/articles - stock with gt40p heads) is what I'm dealing with. And I realize that, never stated I wanted my 302 to be a 351 (but I wouldn't complain). Just looking for a range of cam duration/lift on average that gives the most torque. I don't want to over-cam it.
 

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I would assume that the smaller of your 2 choices would be the better one, but you might want to go a little smaller yet.

Is this a factory roller cam motor?

Whatever Tech Inspector, EricNova, Painted Jester, Engineczar or Vinniekq ask; do your best to answer
 

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When all my buddies had 5-oh's; the hot ticket to the unported GT40P heads and a tubular intake was the XE258HR from comp. Its a roller cam for a factory roller block, factory-type idle, .533/.544 lift, 208/216 Dur @ .050 on a 112* LSA with a 108 ICL.

Your valve springs won't go over ~.490" valve lift if I remember correctly.

**There are some caveats to using the GT40P heads; others here can better advise you on that.
 

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. X 2... before I even got to AutoGear's posting above, I was thinking about a ~208/216 cam from what you claim you want... good torque punch and will pull to near 6,000 RPMs in a 302"...
 

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Discussion Starter · #14 ·
. OK, looked at your other thread about this '85 Crown Vic... no wonder you want torque... the GT40P heads and cam should make it run kinda like a Marauder... you're just across the pond from me somewhere's in Ontario...


http://www.hotrodders.com/forum/ford-1985-crown-vic-gains-336097.html
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Yea its a little slow. Not looking for a racer by any means but hell, I still want to hear it scream up top even if its not where its making the MOST power. I'm considering the gt40p only if I can find a good deal. I saw one pair that was cleaned, with a fresh valve job for 400$. Missed out on that one.
 

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Discussion Starter · #15 ·
. X 2... before I even got to AutoGear's posting above, I was thinking about a ~208/216 cam from what you claim you want... good torque punch and will pull to near 6,000 RPMs in a 302"...
Also I took a look at the comp XE258HR and it looks VERY appealing. 206/216, high ramp and lift (relatively). Not too much duration so high lift might not be a problem with PTV clearance.
 

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http://www.hotrod.com/how-to/engine/ccrp-1302-six-budget-ford-heads-that-work/
I wish they had tested the Dart heads; but for ~$800 you can't beat the Flo-Tek's. Especially for the Crown Vic; shaving weight off the front is a nice bonus. If you don't have GT40P's already with new guides, a valve job, real springs and that have been cleaned and checked for cracks...you'll be surprised at what this will really cost. Especially if the valve seats have receded.
 

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Also I took a look at the comp XE258HR and it looks VERY appealing. 206/216, high ramp and lift (relatively). Not too much duration so high lift might not be a problem with PTV clearance.
I've got a similar cam in my Mopar 360 (Comp XR258HR-12) and it makes good power for only being a 206 / 212. Fast lift rates help a lot, and with the short duration, it's beyond torquey. The motor pulls like a diesel that can rev. Pulls well from 900 rpm, starts to get stronger around 1200 and pulls like a freight train from 1500 on up. In my motor (with 1.7 rockers), it doesn't start to fall off much until around 5500.
 
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