Comp XE258 cam fits...

[P72Ford]

Since this thread has been somewhat of a cam discussion thread...

What about the cams that Trick Flow offers? I believe there are only 3 OTS grinds that Summit has, but has anyone used one, or does anyone have thoughts on them?

[merc91]

I heard their good high-revers...thier well liked for foxbodys, but they would be a little soft down low on out big boats me thinkin.

[hemihotrod402]

ok, so, the biggest concern with the xe258 was the amount lift, correct? That would mean that with those heads, any cam that has less lift than that would also work (TFS, etc), right? If so that means a TFS top end kit should bolt right on to a lopo motor (with the right computer)

[merc91]

the max lift has absolutely nothing to do with PTV clearance. It's the duration that the valves are open .050". PTV contact occurs when the valve is just opening or closing. With this cam and its .533/.544 lift, I have more available PTV clearance than the stock HO cam and 1.7's which was .475" I believe with that combo. It's just .533 and .544 is a ton of lift, but its shortish duration of time the valves are open allows it to work.

[1980c10]

It does have to do with the lift and duration and blah blah blah lol. The only way to know for sure with a combo is to measure. You can really say a cam with x amount of lift and x amount of duration with always fit a given combo, there are just way to many variables. All after market combos should be measured.

[gadget73]

always measure. General rule is that its the duration that screws you, but never ever assume something is gonna fit.

[zoomie]

me likey , i want one now, oh wait been wantign one, *sigh* one of these days

[Pirate]

Since this thread has been somewhat of a cam discussion thread...

What about the cams that Trick Flow offers? I believe there are only 3 OTS grinds that Summit has, but has anyone used one, or does anyone have thoughts on them?

The stage I is a bit dead on the low end. I'd prefer the XE258HR over that cam, and likewise with the XE264HR over the stage II....

The stage I has a nice idle, and in the one car I drove with this cam in it....there's not much there down below 2500 rpm or so. The Stage II cam replaced the stage I cam in the same car....and while it picked up some power up top....all it seems like that it did was simply move power and torque peaks about a 1000rpm up higher in the powerband.

[zoomie]

been doing some research, came across the XE266hr looks promising.....

[P72Ford]

The stage I is a bit dead on the low end. I'd prefer the XE258HR over that cam, and likewise with the XE264HR over the stage II....

The stage I has a nice idle, and in the one car I drove with this cam in it....there's not much there down below 2500 rpm or so. The Stage II cam replaced the stage I cam in the same car....and while it picked up some power up top....all it seems like that it did was simply move power and torque peaks about a 1000rpm up higher in the powerband.

Interesting. Aside from my car, I've never driven another HO car. And I don't have the best feel for my own due to tuning issues. But with a 3000 stall or so, I'd imagine I could combat some of the lame low end.

Any thoughts regarding Anderson Ford Motorsports cams? Specifically the N41 (or N21 for 1.7 RRs)?

[gadget73]

all the HO cars are kind of dead under 2500 rpm or so. Its just the nature of the cam. It would be easily fixed with a higher stall converter though. Stock is like 1300 rpm or something ridiculous.

[Pirate]

Interesting. Aside from my car, I've never driven another HO car. And I don't have the best feel for my own due to tuning issues. But with a 3000 stall or so, I'd imagine I could combat some of the lame low end.

Any thoughts regarding Anderson Ford Motorsports cams? Specifically the N41 (or N21 for 1.7 RRs)?

I have absolutely no experience with Anderson products. I've heard nothing but good reviews....but I've not had a chance to drive anything with their cams installed.

Concerning the cam....if you can get something from Anderson, I'd try it, but otherwise, I think the TFS cams are approaching the Ford 'Letter' cams so far as how old they are....I'd contact Anderson or Comp directly, and get some feedback from them.

I'm curious how the XE274HR from Comp would work in this car, considering you're already contemplating a much-looser convertor....

Another note?

You might try Dirty Dog for a convertor.

[sick88tbird]

all the HO cars are kind of dead under 2500 rpm or so. Its just the nature of the cam. It would be easily fixed with a higher stall converter though. Stock is like 1300 rpm or something ridiculous.

Stock convertor stalls @1800...some of the earlier converters will stall a little higher behind an HO because they were a little looser to accomodate the lower performance engines at the time.

I've seen AOD guys in the mustang world do great with a bolt-on car with 3.73-4.10's and a 3000rpm convertor(on the stock H/C/I). I'm tempted to toss a 2000-2400 stall converter in my car with the 351W, but I wonder where the stocker will stall with an extra 200lb-ft or torque going through it.

+1 on the stock HO cam being very lack luster below 2500...it's not TOO noticeable in a stick car, but is extremely pronounced in an AOD. My first T-bird was an HO/AOD/3.73 car...and it was either grandma-esque acceleration or "hold on to you ass" acceleration...not much of a choice in between.

[packman]

Very nicely done 91merc!!! Enjoy that beast mang!!!


Packman

[pantera77]

all the HO cars are kind of dead under 2500 rpm or so. Its just the nature of the cam. It would be easily fixed with a higher stall converter though. Stock is like 1300 rpm or something ridiculous.

The 89 certainly has more low end power than a stock lopo (well at least my 91). But it has just the right combination of parts.

The wagon on the other hand, is dead as a rock under 3000. Saying it's a light switch would be an understatement. But I think some of that has to do with it not being very SD friendly.