493 stroker, stealth aluminumn heads, 10.8 to 1 comp.,195 cylinder pressure, 3.54 gears, 4-speed, MP ignition, six pack intake, 1-7/8 headers Anyone with similar set up would like to know what Cam your running, and gear ratio. Not happy with my choice XE274H-10. Hydraulic or solid.

Please define not happy.

I have the XR274R Solid Roller in a 496" w/84cc Eddy heads.
3.23 gears, auto.

Hard to spin tires without reving high and dumping clutch shift into second and it won't break them loose. Just thought should have more torque. Have rechecked opening and closing timing and everthing is happening when it should.

I have near the same motor set up as you, 493,sidewinder heads, 10.5 comp,with the performer RPM intake and 850 Holley.. 3:55 gears, T/F trans..I had Tim at Bullet cams grind me a hyd roller ,,has 530- 530 lift,don't remember the rest as I'm at work ..LOL and don't have the specs with me..great street and strip cam.. just right for me..3600 + lbs ,with a terrible 1.7 60 ft I ran 11.47 @ 119 mph.with tons of torque I just lit the tires up. Then drove home. I need better tires.That cam I had made for a buddy in flat tappet hyd,, with about same specs was much cheaper and works well !!!

12 * initial, all in by 2600 rpm to 38-40 + on 100 octane, down to 36 on pump gas...on my home 4 wheel scales about 3630 lbs . then add my 200 plus lbs ,.so around 3850 lbs on the start...and the old 56 is about as aerodynamic as a brick..so I'm happy..

Quote:

---

12 * initial, all in by 2600 rpm to 38-40 + on 100 octane, down to 36 on pump gas...on my home 4 wheel scales about 3630 lbs . then add my 200 plus lbs ,.so around 3850 lbs on the start...and the old 56 is about as aerodynamic as a brick..so I'm happy..

---

Ya. I've found out that on my engine and a few of my friends engines, that having the distributor set up with a light spring on the centrifigal weights to keep them closed while starting and going full out at around 1100 rpm to 35*, that it really wakes the engine up. Like I said, this is how I have mine set up and the car will break the tires loose at will. My car is 3726# with a half tank of gas. Plus my 200# in the seat and you are close to 2 tons. The car sixty's in the low 1.5 range pulling the tires slightly on pump gas (93 octane), yet is fully streetable.

The XE274 is a fairly small cam for a 493 but it should still make a ton of torque. You might be giving up a bunch of power up top but it all depends what you're trying to do with the car.

I've used the MP .528 in street cars with a stroker engine and it works great. The .528 is fairly mild cam so the idle is smooth, but it will pull hard thru 6000 rpm. If you want more of a race engine then you can go even bigger with the cam.

Did you degree the cam or install it with the dots lined up? I used that cam in a smaller stroker motor, 3.91 stroke with a 4.350 bore, I am not happy with the dyno results as I have had stock stroke motors with bigger cams make more HP and torque on pump gas than this motor did on the dyno As far as your cam and a better choice you might want to try the Comp Cams XE295HL or, if you want a solid lifter cam the Comp 294S and 306S or the XS290S grind cams may be more to your liking As already pointed out, the bigger C.I. motors eat cam duration so don't be afraid to go big, esepcailly with the 4 gear tranny BTW, I do have another 3.91 sroke pump gas motor that I had ran with a set of Eddy RPM heads and a stock OEM Eddy sixpak intake and carbs with Comps. XE295HL installed right at 3 degrees advance on the intake lobes, that motor ran high tens in my 3450 lb. Street Duster on Oregon non ethanol pump swill when I had that motor in it I'm building a 1966 Coronet deluxe two door sedan for that motor right now,I did swap the heads and put a set of ported 452 iron heads on it with a Performer RPM intake and a Holley 850 D.P. carb, it will have a NP833 O.D. trans and a 35 spline 3.54 Dana 60 in it Your choice on the cams, let us know what you choose

I have used 3 different cams in my 440/493. I first had the Mopar 509. The power was good but I was dealing with near 10.9 compression and California gasoline. I had to limit my ignition timing to 31 degrees total to avoid detonation. I took the advice of someone to switch cams to a Comp XE285HL. The car ran smoother and made about the same power. Not a disappointment at all until a lobe wore off. I pulled the cam and swapped in another. It ran fine until the second cam failed. I put the 509 back in just to keep the car mobile.
Two years ago it was suggested that a bigger cam with a later intake closing would reduce my static compression ratio by trapping less cylinder pressure. I installed a Lunati 316/326 solid. The car ran faster than ever but the detonation got worse. It turned out that while the cam WAS bigger, the intake closing was almost 2 degrees earlier than the 509 and the cranking compression went up by several points.
Finally I pulled the heads to have them ported and used thicker head gaskets to lower the compression. Many advised against this, saying that I'd lose my "quench" and still possibly have detonation. The car is now down to 10.07 to 1 and the detonation is gone. The Lunati runs real strong over 3000 rpms. Even from a standing start it will fry the 295/45/18" tires all the way through 1st and mostly through 2nd.
I'm not real happy with the idle though and it still feels a bit soft below 2000 when cruising around. On the advice of Andy F, I did buy the Mopar .528 solid cam but I've been too busy with other stuff to do another cam swap just yet.
The cam you mention seems to be on the small side which I'd think would be a real tire smoker. The smaller cams idle great and are supposed to be real strong at the low end, gradually choking out above 5000 rpms. If you are running 5-8 degrees of initial timing, it will feel like a slug out of the hole. I used to run 16 degrees with both the Mopar 509 and the 2 Comp 285s. This Lunati I run 19 initial with 33/34 total. You may have problems elsewhere. Bummer that you have the six pack setup though. It makes it hard to just swap carbs from other cars. I have a few 4 barrel cars here and often swap parts around for testing.

should be able to melt the tires at will with that combo.

Well Larry good luck with your set up,,I'll get my traction problems straightened out soon,,,Best wishes to everyone there ,HAPPY THANKSGIVING EVERYBODY !!!! Larry S..56 Plymouth

I have a 470" low deck at 10.2:1(measured)in a a street toy. I have the XR280R street solid roller in it.The solid roller idles nice(makes 10-12" vac at 900rpm)and pulls HARD all the way to 6000 rpm.I have 3:73 gears and a 4 speed and it will do at will. 1st and 2nd gear are useless from a roll no need to side step the clutch.I personally think there is something else with the op's setup....that thing should rock!!

I run a solid flat tappet cam in my 493. The eng has 10.6 comp with EZ aluminum heads and it has quench at .046. The cam is a custom grind by Dwayne Porter who speced it for my eng as I told him I want to make good power and I like a little rump rump in my idle but it actually idles pretty smooth for what it is as its 264 & 270 @ .050 with .585 & .592 lift. It has a 110 LSA and I have the ICL in at 106. I do use 1.6 rockers which puts the lift around .630. I use the Indy dual plane intake which is like the RPM but slightly bigger ports and I use the basic 850 DP carb. I run 4.30's but I use a 30" tall tire and run a Dynamic 9.5 street/strip conveter. My cam works very good for what I like as the car has great driveability and it will rev right up when you nail it at any rpm. It weighs just over 3700 lbs with me in it and I can drive it to the track and run mid to high 10's just like I drive it on the street through the pipes on 92 pump.
If I were you and you really think it needs a cam change I would call Dwayne Porter and talk to him as he can recomend or grind a good cam for you. He is one of the best cam guys out there so you cant go wrong talking to him. Just let me know if you are interseted to talk with him as I have his phone number. Ron

You need way more initial/shorten the slots to get back to 36-38. Might need to come in faster but I would definitely do that first. Make sure it ain't too lean (jetted) & no vac leaks. As said that otta be a killer with all the goodies it has. I forgot if it was a 4 sp or an auto (correct TC?)

My combo is very similar to yours. I have had several different cams in over the last few years. My Cuda is an auto with 3.91s. I have Scott Brown spec and grind all my cams. I have a 251*/264* FT solid in right now for it's better idle.

The fastest cam I have had in it was also the largest. 263*/273* FT solid made 520RWHP. The car ran a best of 6.89 @ 103.6.

Although I do not know your cam specs, I would be surprised if it was the root of your troubles.