493 STROKER CAM • The Dodge Challenger Message Board

by **FC7RT** » 22 Mar 2009 12:47

Hello,im writing from australia and have a Q: I have a 493 440 stroker 10.6.1 pistons + .005 out the deck ported stealth heads with valve job performer rpm manifold 850 pumper 1 7/8 hooker comps and its auto,i ordered the comp cam xe 285 hl 241@50 int 247@50 ex i have 1.6 rollers so i have 585 lift int and ex.Im after a strong street engine and after reading some forums im not sure if its to small.All i want is to make around 540hp and 600 lb/ft has anybody the hands on experiance to reccomend me..cheers

by **Eddie** » 22 Mar 2009 15:39

Just my opinion , I'm NO expert. I think it will be very close to the 'target' H.P. you wish. The torque will be unreal from this thing. With your compression ratio, and more importantly the Dual Plane Intake, and 'small' camshaft, it will boil the tires at will! If you did want to increase the H.P. and move the power band up a bit, I would first lose the dual plane intake. Replace it with a Victor 440 and change the cam to a 300-310 duration and around .600 lift fast rate of lift wide seperation angle, it will make great power over 600 H.P. then you would probably want 2" primaries on the headers but 1 7/8 will support 600 H.P. what you have now is a nice street engine with a sweet idle but not a lot of lope. perfect for a 'sleeper' plant that looks like a mild 440, this is cool, no. :lol:

(The bigger cam, that keeps the valves open longer&further, and allows a larger intake charge from the cam and the plenum size of the intake manifold to feed it all is the recipe for higher RPM power, especially with your ported stealth heads,, why not take advantage of this ) :thumbsup:

I forgot to mention the Indy 440-2 dual plane intake. It's the only dual plane that supposedly flows as much as a medium plenum single plane like the Victor or Weiand or eds Torker-2, if you must have the low end torque. With 496 long arm cubes, I wouldnt think you would need it , and would want more high rpm pulling power.

by **FC7RT** » 29 Mar 2009 12:35

Thanks for your help,i have changed my order to the comp cam hyd roller 242/248@50 292/300 duration 1.6 rollers give 585/580 lift,just got back from a cruise here in melbourne australia and a guy had his 570 cube camaro with big solid roller and it was rediculous,700hp+,cant make it along to the fire charity cruise next week because he does not have the range in fuel to participate,not interested in that kind of bs thats why i like to keep my combo real.What do you think?Comp said its worth a little more hp and tq without giving up anything.

by **Eddie** » 29 Mar 2009 14:47

FC7RT wrote:Thanks for your help,i have changed my order to the comp cam hyd roller 242/248@50 292/300 duration 1.6 rollers give 585/580 lift,just got back from a cruise here in melbourne australia and a guy had his 570 cube camaro with big solid roller and it was rediculous,700hp+,cant make it along to the fire charity cruise next week because he does not have the range in fuel to participate,not interested in that kind of bs thats why i like to keep my combo real.What do you think?Comp said its worth a little more hp and tq without giving up anything.

I too am going to use a hyd. roller! in my 500" stroker!! It gives the best of 'BOTH' worlds. Yes, it is quite expensive compared to a flat bottom cam, but it can be ground with the power producing 'squared' lobes as Solid roller cams have, flat bottom cams cant have this radical interface due to the lifter bottom and the lobe, it makes this physically impossible. You'll have a nice reilable powerplant that makes great torque and exceeds your H.P. target, probably by a wide margin. The important thing to remember here, is the idle will be much improved over a flat tappet cam with 'equal' proportions. The driveablity will be much improved, the engine 'quieter', no need for ANY breaking in, no worries about flattend cam lobes, you can use any lubricant you wish, with moly filled/faced rings, tri-metal engine bearings, breakin will be almost instant, I am using an Australian Made RollMaster chain with German chain,(Iwis), and this also needs no breakin due to the chain and rollers being polished before asssembly. So you can assemble the engine ,, fill with 10W-40 or whatever you wish as long as the bearing clearance isnt over .003 and burn rubber! :lol:

(I have personally discussed this with 3 members on this board who have wiped cams, (flat bottoms), and had to tear the new engine back down). Smart Move!! Keep us posted on this build, I would love to see/hear it after/during it's completion! Thanks

by **Eddie** » 29 Mar 2009 14:54

This site explains many things about camshaft design and theory, it's great read. :thumbsup:

It also makes you 'sound' like you know what you are talking about to your mates. :s024:

http://www.webcamshafts.com/pages/cam_glossary.html

by **FC7RT** » 30 Mar 2009 21:27

Im shocked! they sell rollmasters in the usa!ive been using these chain sets for years,i again purchased one for my dodge engine with the torringtom thrust bearing,they are real quality units,no china crap like alot of the crap these days..Really happy going to the roller,ive been building engines for a while but have never used one,a buddy of mine is a pro engine builder and was trying to get me over and he did in the end.

by **Eddie** » 31 Mar 2009 3:15

FC7RT wrote:Im shocked! they sell rollmasters in the usa!ive been using these chain sets for years,i again purchased one for my dodge engine with the torringtom thrust bearing,they are real quality units,no china crap like alot of the crap these days..Really happy going to the roller,ive been building engines for a while but have never used one,a buddy of mine is a pro engine builder and was trying to get me over and he did in the end.

RollMaster is the only cam drive I will consider. All my engines get them.. :thumbsup:

I'm also thinking about using these "new" Beehive springs that Comp Cams are currently making. http://www.babcox.com/editorial/ar/eb50354.htm with these springs, 7000 RPM with a hydraulic follower is very possible! Check out the weight of the valvetrain parts at the end of the tutorial!!!!!! Part#26918 should fit my application perfectly, but I'll see what my Cam supplier Scotty Brown says. :wink2:

These springs would 'compliment' the hyd. roller's profile perfectly! The roller has more of a flank and a much 'square' lobe over any flat tappet, hyd. or solid. This will aid in spring control when using a lighter weight spring, plus without the scrubbing of the inner spring, the parts stay cooler, less surge, more cam follower control, translates to more power. Yeah, I'm sold too! There is a member on this board who runs a 400 based 451 Stroker in his 73 Challenger with Cam Motion hyd. roller. His car makes great midrange torque and upper RPM power due to his cam selection which is pretty mild considering the duration and lift. He's quite happy with it.