: My UD 288/296 solid flat tappet just went flat, replace or go solid roller?
cody Mar 7th, 05, 11:19 PM Hi, my Ultradyne Solid flat tappet 288/296 cam just went extremely flat due to my fault. I don't really want to spend the extra money for a solild roller but don't want another flat cam. The motor is coming out for a cleaning. I would probably be going with a lunati cam(UDharold). Wondering if I should just replace the 288/296 solid FT or step up to a solid roller. This car will see a ton of street time, so it will have to be a mild one. What is the best setup? obviously the Isky red line lifters are the best, but what type of cam? a billet steel cam? Can anyone recommend a solid roller that will survive on the street but will be similar the the UD cam? thanks!
Wolfplace Mar 8th, 05, 12:15 AM Originally posted by cody:
Hi, my Ultradyne Solid flat tappet 288/296 cam just went extremely flat due to my fault. I don't really want to spend the extra money for a solild roller but don't want another flat cam. The motor is coming out for a cleaning. I would probably be going with a lunati cam(UDharold). Wondering if I should just replace the 288/296 solid FT or step up to a solid roller. This car will see a ton of street time, so it will have to be a mild one. What is the best setup? obviously the Isky red line lifters are the best, but what type of cam? a billet steel cam? Can anyone recommend a solid roller that will survive on the street but will be similar the the UD cam? thanks! =
Cody,
Lot's of choices if you decide to go to a solid roller.
Lunati / UD 502A5 but on a 110 sep (UR9/UR66 lobes)
286/296, 255/263, .685 /.680
502A4 if you want a little less lift which I think would be a mistake with your heads.
287/295 256/264 .660/.660 110 sep
Isky R5545/R548, 290/294, 256/260, .680/.680 on a 110.
These are all lobes that are very streetable.
You want a billet with the cast gear option.
Red Zone lifters.
Comp also has a ton of very good lobes that are not stupid aggresive.
I can do you pretty good on the Isky stuff, both cam & lifters, can't help you on Lunati, you will probably want to order it from them.
Give me a call or email me if I can help. ;)
cody Mar 8th, 05, 12:18 AM in your opinion, are these cams going to be soft enough for a lot of street use and idling? which would be the least aggresive, and what is a ballpark figure for cam and lifters....i will probably call you tomorrow morning if you don't mind.
cody Mar 8th, 05, 12:18 AM are these cams what you would call a street roller?
Wolfplace Mar 8th, 05, 12:36 AM They are not a "street roller" but will live very well on the street.
You have a performance engine with heads that love lift & you don't want a stock cam for it ;)
The lifter issue is not what it used to be with the quality stuff available now. True Pressure pin oiling makes a big difference.
That said, you still need to use some common sense with a roller on the street. You don't want to sit around idling the thing for long periods of time but you shouldn't be doing this with any aggressive cam, flat tappet or roller.
cody Mar 8th, 05, 12:37 AM well you know how CA traffic is!!! especially in the bay area, there are long times where you just sit!
Wolfplace Mar 8th, 05, 1:02 AM LOL,,, yeah, I remember it well down there & have no plans to return :D
I would suggest a good starter & battery for long periods of sitting,,,
Or another car for you daily driver,, I wouldn't want to drive your car daily down there anyway with all the clowns that are in a hurry to get no where,,,, :rolleyes:
well its not a daily driver, and i do have a great starter and battery, but sometimes in traffic or waiting to get into a show or anything like that there is excessive idling, also wouldn't starting the motor over and over put a lot of strain on the cam also. Is it cool if i call you around 10 am tomorrow?
Wolfplace Mar 8th, 05, 1:24 AM Originally posted by cody:
well its not a daily driver, and i do have a great starter and battery, but sometimes in traffic or waiting to get into a show or anything like that there is excessive idling, also wouldn't starting the motor over and over put a lot of strain on the cam also. Is it cool if i call you around 10 am tomorrow? Yeah 10 will work, but I am going to be pretty busy for the next couple of days, my new dyno showed up & will tied up tryin to get them changed over so won't have a lot of time to talk ;)
undee70ss Mar 8th, 05, 3:53 AM Another member here has over 30,000 miles on his solid roller setup. Heres the post http://www.chevelles.com/cgi-bin/forum/ultimatebb.cgi/topic/4/20879/2.html?
71454Chevelle Mar 8th, 05, 7:51 AM Originally posted by Wolfplace:
That said, you still need to use some common sense with a roller on the street. You don't want to sit around idling the thing for long periods of time but you shouldn't be doing this with any aggressive cam, flat tappet or roller.
Mike,
When I purchased my Red Zone's from Ron (Sorry :( ) about two years ago he told me that with the high pressure oiling of the lifters that it pretty much eliminated any issues with long periods of idling time.
I've had mine in for two years now and with my Isky "street roller" (pretty gentle ramps) and quite abit of idling time, no problems what so ever. Next winter I will probably pull the intake and check the lifters to make sure all is well. ;)
Natural Born Killer Mar 8th, 05, 10:03 AM Im building a motor right now, 468 BBC, Canfield 310 square ports, !0.7 compression. The cam I bought is a Comp XR-292-R solid roller (xtreme energy), It has 660-666 lift and 254-260 at .050. 110 lobe sep. Im also using crower Hipo lifters. I plan to drive to the track, Up to 80 miles one way. Open spring pressure is only 484.
Wolfplace Mar 8th, 05, 12:07 PM Originally posted by NATURAL BORN KILLER:
Im building a motor right now, 468 BBC, Canfield 310 square ports, !0.7 compression. The cam I bought is a Comp XR-292-R solid roller (xtreme energy), It has 660-666 lift and 254-260 at .050. 110 lobe sep. Im also using crower Hipo lifters. I plan to drive to the track, Up to 80 miles one way. Open spring pressure is only 484. =
I do hope you didn't buy the Comp shelf XE :(
If you did send it back & get a real roller ground on a billet core.
That is a cast core cam & will not live with almost 500 lbs of spring regardless of what anyone tells you.
BTW, those lobes work very well with a decent head. I used them in a 489 with a 1.8 rocker on the intake & it made pretty fair power with 315 AFR heads at 9.8 compression
SILVERSS454 Mar 8th, 05, 12:45 PM Originally posted by NATURAL BORN KILLER:
Im building a motor right now, 468 BBC, Canfield 310 square ports, !0.7 compression. The cam I bought is a Comp XR-292-R solid roller (xtreme energy), It has 660-666 lift and 254-260 at .050. 110 lobe sep. Im also using crower Hipo lifters. I plan to drive to the track, Up to 80 miles one way. Open spring pressure is only 484. If you are using the recommended springs from CC, they should be either 434lbs for the #929's or 425lbs for the #939's in open position. The XR's and the Magnums ALL recommend the same springs. If you set them up correctly(installed height) I don't see how that low of an open spring pressure could hurt the lobes. They're are plenty of solid flat cams with spring pressures beyond 434lbs open.
| |