Jeep Strokers

junk ..pure junk.505 did hardly any r and d work before marketing this to the public.i bought a 505 roller when they first came out in 09 and went through a laundry list of problems .basicly the cam cores are not hard enough and fail.also the chessy linkbar failed on me also.i also had many other problems but I don't feel like typing all of it lol.

Interesting, any more details?

The cam hardness/failure could be due the heavier valve springs of the kit. Any valve spring values? Seat and lift pressures?
Some of the hardness issue could be fixed with nitriding the cam.

Link bar failure, that's a new one. Any pics of a good one and the failed one?

The lack or cam lobe longevity is due to running a performance roller grind on a blank meant for a flat tappet. The roller lobe profile necessitates a spring with a higher load. In this case it is a cast blank that won't hold up to those loads. Nitriding won't help. This is without the problems typical of 505.

But what about running the roller lifter with a 'stock' cam or a mild flat tappet profile cam?

We don't know what 'profile' was on the 505 supplied cam. It could have been a more aggressive 'roller' profile or just a 'flat tappet' profile with more lift and duration.

I would like to see roller lifters on a stock cam with near stock valve springs and on a Comp 231 cam with MP equivalent springs.
NO aggressive 'roller' profile cam requiring super heavy valve springs and NO valve spring heavier than a MP equivalent.

You can't put roller lifters on a stock cam for a flat tappet. There is a bevel on the lobe to help the lifters rotate.

Roller profiles are quite a bit different than flat tappet profiles and the two are not compatible. There would also be no point to run a roller with a flat tappet profile as here would be no benefit.

OK, so you would have to have the 'stock' or 231 profile, lift and duration and ramp rate, ground 'flat' with no 'bevel'.

I don't think that the only advantage to a roller lifter conversion would be the more aggressive ramp rates for the same lift and duration. There would be the lower friction, lower heat, less wear, maybe more economy and quieter/smoother engine.

I'm on summit trying to find some AMC Big Block solid roller lifters i can modify like mentioned earlier in the posts. Does anyone know a part number or what exact motor to look under? I'm not very familiar with AMC other than the jeep stuff.

Where are you getting the roller cam from?

SilverXJ wrote:Where are you getting the roller cam from?

LSM systems engineering

http://www.lsmeng.com/

LSM Lifter Bushings might work if they can machine them for the Jeep block. Press in fit with lifter guide groove. That would be cool.

Can LSM make a billet cam at a reasonable price?

Ide like to use the lifters that were mentioned earlier as I can wire edm a set of link bars made of something I won't have to worry about wearing out or anything. Also lsm said they have cores in stock and ready to grind. I didn't get a price though. I'm gonna have to eat whatever it'll cost cause I've already broke my cast lunati cam running my crower solid flat tappet lifters after I left off the throttle running it at the strip.. Went through the lights at about 6900rpm..

NICE, 6900 RPM. That's really pushing the boundaries.

KenoshaComanche wrote:I didn't get a price though. I'm gonna have to eat whatever it'll cost cause I've already broke my cast lunati cam running my crower solid flat tappet lifters after I left off the throttle running it at the strip.. Went through the lights at about 6900rpm..

I'd be interested to know the price... I doubt its going to be less than $1000.

SilverXJ wrote:

KenoshaComanche wrote:I didn't get a price though. I'm gonna have to eat whatever it'll cost cause I've already broke my cast lunati cam running my crower solid flat tappet lifters after I left off the throttle running it at the strip.. Went through the lights at about 6900rpm..

I'd be interested to know the price... I doubt its going to be less than $1000.

Silver, didn't Mike Jones, aka. CamKing, say he could make one? Seems like I saw a thread over on ST where it was said he could make one for a Ford or Chevy(?). The price was $1000 to $1500.

I6FAN wrote: Silver, didn't Mike Jones, aka. CamKing, say he could make one? Seems like I saw a thread over on ST where it was said he could make one for a Ford or Chevy(?). The price was $1000 to $1500.

Yes, he can. I asked him about one in 2012 when I was purchasing my flat tappet cam from him. "To make a one off custom steel billet for this engine, you'd be looking at around $1,100."