The information and pages posted below were found in the internet-archive.org and are purely for historical purposes only.
ULTRADYNE CAM LISTINGS:
426 HEMI CAMS – – “B/RB” BigBlock CAMS – – “LA” SmallBlock CAMS
ULTRADYNE CHRYSLER CAMS
Are you looking for a real Chrysler camshaft designed for the Chrysler .904 lifter? Our mechanical flat tappet cams are not just a Chrysler core with a (Chevy) .842 lifter grind on them. They are designed to take full advantage of the .904 Mechanical flat tappet lifter and we can prove it!
It is true that we do not have a Hydraulic flat tappet cam designed for the .904 diameter lifter but they are coming soon. It is also possible for us to have ".842" or ".875" designs ground on a Chrysler cam core if the application warrants i.e. less lift, milder acceleration rates etc. Some maybe listed in the catalog that have been ground in that configuration and they are popular grinds so we list them, but we DO have masters specifically designed for the .904 Mechanical flat tappet lifter.
Note From Harold:
We have had some feed back from "A concerned Citizen" that we are lying when we say we are making real Chrysler cams, and that we are making Chevy Cams and calling them Chryslers. That’s true as far as Hydraulics go, but then our Chevy profiles are superior to others. When MUSCLE MOTORS first Dyno-tested our cams around 1990, they found our .875" lifter 309 outperformed EVERY mechanical flat tappet cam offered for the 440 with less wear.
Our NF .904" cams are .017" from the edge of a .904 tappet, and here’s a comparison showing who makes the " REAL CHRYSLER CAMS" (All data from published website info)
This is for any "concerned citizens"
|Manufacturer/Grind||.020||.050||.200||Valve Lift (1.5 Rocker)|
|UltraDyne (1980 .842" Lifter)||292||259||170||.551|
|Crane (1998 .904" Lifter)||294||258||166||.560|
|UltraDyne (1985 .875" Lifter)||309||276||190||.613|
|Crane (1998 .904" Lifter)||314||278||186||.600|
Let the numbers speak for themselves.
UltraDyne Masters Comparison
.842 FLAT TAPPET CAMS VL =.016" 1.5:1
NF .904 FLAT TAPPET CAMS VL
I’ve heard that the Ultradyne cam w/ specs of 309′ duration and lift of .613″ on the intake and exhaust, is similar to a roller, but without the roller cam cost. Word has it, “This cam ramps up like a roller, but w/o the cost of a roller.”
I’m planning a ~500 horse 413, bored .30″ over (~420 cubic inches) and it’s going into a 1966 Dodge Coronet 500, 4-door sedan. It’ll be standard weight, with a 727 beefed torque-flite with a ~2800 stall converter, running through a 389 case Chrysler 8 3/4 with a limited slip 3.55 to 1 gearing. The heads will be moderately to extensivly worked “906” castings with adjustable rockers. Static compression will be around 9.5 to 10.0 using older Jahns flat-top forged aluminum pistons w/ eyebrow fly cuts. I will start with an ~800 cfm Holley or a monified 750 cfm Carter AVS off of a 440. I’d like to try a dual quad set up after I get it running and use (2) 500 cfm “Competition Series” Carter AFBs – that I currently have. This vehicle will be for hot street use with an occasional drag strip appearance.
Any and all comments/suggestions appreciated.
Thank you, Richard
Rich, that cam is too big for your engine. I ran that cam in my old 440 strictly for race use.It’s a good cam,but is really suited for race use. I would look at a smaller cam for your app. -rocky
I have that cam in a 440 and it is too big for a street cam. Going to have to change it this winter.
mopar 1968 superbee 431cid 11.5 906 head super [383/440]
I have that cam in my 440, 10.5 to 1, pump gas, Edelbrock rpm heads, 1.875″ hooker headers, 4400 stall with 4.30 gears in a 3600 lb. Challenger street/strip car and run consistent 10.80’s@ 124 mph. It has good street manners and doesn’t load up. The motor dyno’ed at 585 hp/6200, 570 tq./ 4900. Love this cam!!
Anyone here have that cam they want to sell please let me know I am building a stroker motor
I am looking for a UltraDyne Cam anyone have one for sale.
I know I’ve said this twice before but if anyone reads this post and you have one of those Ultradyne 640 cams and its in good shape or still new in the box and you want to sell it please get in contact with me I’m extremely interested in it
Ok so I am in need of help. I have contacted Bullet cams which took over Ultradyne. I have all the numbers on my cam but I’m being told there should be a R number , I don’t see any R number. Below is my cam info. Any help Identifing this cam would be great. BBC
Master number 21/27
I am needing lobe separation and RPM band and if this is a roller cam.
Any info would be great.
Gary, maybe you can check for the presence of lobe-taper?
If present, then it’s not a roller cam.
I still have a new unused UD cam;
NF57 – Ultradyne mechanical, 255 @ .050″ w/ .582″ valvelift
I’ve had it installed in an engine once, only to remove it for a smaller cam before startup.
Not sure if I want to get rid of it because it was an expensive cam for me to get over here (Europe).
Thanks I have found what I needed by degreeing the cam shaft. I spoke to another person at Bullet that confirmed this cam is s Roller and that the H7080 is the serial number.
Though I do appreciate the offer there sir I am really looking for the ultradyne 640 cam so if anyone on here has one preferably brand-new unused or even if someone has the herb McCandless 324 650 lift cam I’d be interested in that too please contact me thanks and have a great day
hi , would you recommend the Ultrdyne/Bullet 309dur-613 lift cam for a 505 Chrysler big block ? street strip , 5000 stall , 4.1 gears , 3700lb 68 Satellite
I have run the u ltradyne 309 613 lift cam in a 74 duster bracket race car at 3020 lbs .055 over 440 727 auto with coan 4500 stall and trans brake and 8.75 rear 4.56 gear car ran 10.66 @ 125 mph great cam for light car pulled hard to 7000 rpms.
I have an Ultradyne H1828 294 R22/22 R8 – can you tell me the type and specs? Hoping I can use it in the 440 that I am building. Thanks!