Anyone out there running a solid roller cam on the street?? I had a couple of questions, like how often do you have to adjust it, etc. Thanks.

 

I've never used one in a 460 on the street, but I would say every 6000 miles would not be unreasonable. I used a Comp Cams 280 solid roller in a customers 514 street engine and he's very happy, I don't think he's had to mess with it. I do engines for a friend who has a monster truck, his engine is a 557 incher with a Lazer cams roller and I've only adjusted it once or twice in the last 6 months of use. I check it once in a while and nothing seems to change. Don't forget to run a stud guirdle and it should work good.

 

The roller I'm thinking of using has only .570 lift and 234 duration @0.050 on the intake. The spring pressures are like 120 closed and 360 open. I wouldn't think that I would need a stud girdle for that, will I???? What do you think of the streetability of that cam? I ran it on Desktop Dyno and it was putting out 530 ft.lbs. at 2000 RPMs and maxed out at almost 500 hp with my particular combination. My dad thinks this would not be good for the street considering idle, vacuum, and he thinks it will not have much low end. I tend to believe what the Desktop Dyno shows. I also know that CJ and SCJ cams had almost this exact duration and plenty of people loved them on the street. Sorry so long. Any comments??? Thanks in advance.

 

How many cubic inches are you going to run? What compression, that would make a huge difference in the cam's idle qualities. I know 238/238 .634/.634 lift on 110 centerline in on 106 idles pretty rough in a 514 with 11:1 compression with the Blue Thunder CJ heads.

I've used 268/276 at .050 .727/.727 on 108 in on 104 in a 557 with 13.49:1 and it behaved so good you wouldn't believe it, I'm still talking about an 1100 rpm idle, but for a race car that would be nothing, what can you stand? The engine combination, vechile weight and overall driveability that you can live with every day dictate the cam you should use.

 

It will be 466 cid (30 over) 10:1 compression. The specs for the cam are 275/284 adv duration, 234/244 @ .050, .570/.572 lift, lobe separation 110 degrees and intake centerline at 106. I would like my idle to be 1000 or less, at least. The car is heavy. I'll also be using an 850 Demon, Weiand Stealth, fully ported and polished D3's (they were free). It will be a car used on the street maybe 5000 miles per year, probably more like 2000 miles per year. It will also have a C6 tranny. I don't want this thing to lose low end and make all of its power at like 6000 R's. Like I say, it will be a street car, even though it won't be driven much. Thanks again.

 

Your cam should be streetable...in fact you could probably go a little more. I've run that much duration in a 351W on the street and big blocks can usually handle 10 more degrees duration than small blocks. Since you'll be running an automatic you'll need more stall...at least 2,400 RPM...call your cam mfg. to get a recommendation. What gearing and tire size will you be running?

Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro

 

Why would I need a higher stall?? Because of a high idle?? It shouldn't be because of loss of low end torque, that is, not if Desktop Dyno is even half way right. As for calling the cam manufacturer, they always just say the same thing that is in their catalog, no matter what your individual situation is. Gearing right now is 3.25, but I am wanting to go to maybe 3.70 or 3.90. Tire will be right at 28".

 

first where are you located ? I ask this because I know of a place that will built torque converters to 2500 stall, more like 3000 with a 460, for 150 to your, well my door. this place is in u.p. michigan and i am in mid mich. any way if you want i will give you the number i put a 2000 stall for a stock 460 up to my 466 with 270/542 isky wieand stealth 750 holley home ported stock heads. this thing stalls at 2700. I would put this converter in your car. it really makes a huge diff from stock converter. rear gearing would be 370 to 390 i would say if your were running like 255/60 or so. just guessing on tire size!!!

 

>Why would I need a higher
>stall??

As you increase the duration you move the HP and torque curve higher up into the RPM range. Your stock converter probably stalls around 1,500 RPM. Your power range with a 230-240 duration @ .050" is probably up around 2,500-6,000 RPM...so while your "spooling up" that Ch*** in the other lane is already across the intersection.

Because of a high
>idle??

Your idle shouldn't be more than 800-1,000 RPM or you have something else wrong in your setup.

It shouldn't be because
>of loss of low end
>torque, that is, not if
>Desktop Dyno is even half
>way right. As for calling
>the cam manufacturer, they always
>just say the same thing
>that is in their catalog,
>no matter what your individual
>situation is.

Call a different cam Mfg...I always call two or three to see if they get me in the same "ball park" with their recommendations.


Gearing right now
>is 3.25, but I am
>wanting to go to maybe
>3.70 or 3.90.

If your running street tires, 3:70s are close to ideal. If your going to the track and run slicks, I'd go with 30s

Tire will
>be right at 28".


Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro

 

Dog-gone "smiley faces"...that's three-seventys with street tires and three-ninetys with slicks.

Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro

 

So 540 ft.lbs at 2000 RPM's is not enough??? I will need a higher stall with that? That's my question. Yes, I know that you typically lose low end with bigger cams but with this set-up It has way more torque at 2000 than did stock or any decent hydraulic cam.

 

Not to rain on your "parade", but I have found Desktop Dyno to be slightly generous!!!

 

>So 540 ft.lbs at 2000 RPM's
>is not enough???

Look at it from another direction...your stock components are not built to live with that much torque and HP...they will last for a while, but I guarantee you they will fail. You will have just spent $1,000's to get your engine up to where you want it and you won't spend $300-$400 for a converter and $150 for a shift kit???
Plus add the effect of shaving off around a half second in E.T. in the quarter mile...a half second in a heavy pickup can easily be worth the equivalent of an added 100 H.P.

I will
>need a higher stall with
>that?

Only if you want to maximise what you got... what you intend on doing is kinda like building a 600 C.I. big block and then putting a 500 CFM carb on it to get good gas mileage.


That's my question. Yes,
>I know that you typically
>lose low end with bigger
>cams but with this set-up
>It has way more torque
>at 2000 than did stock
>or any decent hydraulic cam.

What ever you do, go for it...you asked for suggestions...I'm just giving one persons opinion. Good luck.
>


Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro

 

Sorry if I sounded like I didn't appreciate and seriously consider everyone's opinions. I do appreciate it. I just wanted to make sure everyone knew my situation, exactly, and they were making recommendations based upon accurate knowledge. I already have plans for a converter and a shift kit. As for the desktop dyno. I have ran several combinations of engines that I found in various magazines and it has been right on for the most part. For my engine simulation, I even have cylinder head flow numbers which make it even more accurate than just picking "Canted, oval ports, stock valves" or whatever it says. Thanks again.

 

Bigsnag, no offense taken
Sounds like you'll have a fun ride!


Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro