[72BB Nova]

I've done alot of searching on this site for info on Hyd roller and solid roller cams for big blocks. I came across a thread where a Hyd roller cam was used with solid roller lifters, never heard of this. My question is what is the longevity of this combo in a true street car? Maybe a couple of trips to the track a year, maybe.
I have an Isky solid roller cam and a set of Red Zone's that I was going to use but having second thoughts on the cam. A little big for what I was going to use the car for. Any input will be greatly appreciated.

Thanks Jeff

 

[65lkey]

what is your definition of too big?

 

[72BB Nova]

Adv. duration 290 in. 290 ex
@.050 248 in. 252 ex.
lift .638 in. .646 ex 1.8 rockers on intake and 1.7 on exhaust
110* LC 106 Icl

 

[69-CHVL]

That cam is probably going to be a little big for a 454 for street use, unless you can keep the rpms up. I have a 248/254 in my 509, and OD is not even useable untill I can get to 2000rpms, which is like 60-65mph, and I have a little more gear too. I think a ~230ish @ .050 is a nice size cam for a 454 with OD. All depends on your true intentions with the car.

The "hybrid" setup your considering wont tame that cam enough IMO.

 

[72BB Nova]

Vince, The cam that I posted is the solid roller that I have. After I talked to you on the phone last week about your voodoo HR 60212, I got to thinking more about going to a smaller cam. When I was doing some research yesterday on here I ran across a post on a hybrid setup. That got me thinking about using that Voodoo HR 60212 cam with my redzone lifters. I'm still in the thinking stage and trying to figure out exactly what I want.

 

[71454Chevelle]

Adv. duration 290 in. 290 ex
@.050 248 in. 252 ex.
lift .638 in. .646 ex 1.8 rockers on intake and 1.7 on exhaust
110* LC 106 Icl

That cam is probably going to be a little big for a 454 for street use, unless you can keep the rpms up. I have a 248/254 in my 509, and OD is not even useable untill I can get to 2000rpms, which is like 60-65mph, and I have a little more gear too. I think a ~230ish @ .050 is a nice size cam for a 454 with OD. All depends on your true intentions with the car.

The "hybrid" setup your considering wont tame that cam enough IMO.

Vince,

That's the solid roller that I was using in my 454. In my combo it worked flawlessly. IMO, this cam was not at all too big for a street 454. I could easily take it under 2000 rpm with zero problems. I could lug it to 1200 rpms in 4th and accelerate away with out a wimper. The only low speed issues was at a steady state speed under 1400-1500 in 4th it started to get a little buck. Granted I am using a 4.30 rear gear, but this is with 30" tall tires, which takes the gear ratio equivalent with 28" tires to 4.00. I'm also a little surprised that the XR286 in your 509 is causing you low speed issues. I would have thought with that much displacement it would have easily tamed that cam down.

I talked Jeff into giving it a try in his setup because it ran so well in mine. I think the only issue with him using this cam is the overdrive of the Tremec. He was planning to use the .64 OD. With .82 OD I think it would work fine, but he was wanting a lower highway rpm. He was also concerned about using a solid roller on the street (reliability issues) but this cam has somewhat gentle ramp profiles and coupled with the correct springs and the good Red Zone EZ-Roll lifters he should be fine with this setup.

 

[69-CHVL]

Jeff, forgot it was you.

Darren, I think its tougher for a car to go that low in OD rather than 4th gear, that's the primary issue. Car just has more mechanical advantage in 4th gear rather than OD. Granted, some of my issue could be due to the lobe design of the XE cam I have, but I also ran a comp magnum-lobes 245/252 HR cam, much slower lobes, and I had the same issue as the XE cam. I will say carbureration plays a part in this, I still have some testing to do. I do know that this Prosystems carb doesnt meter correctly down low. The 1000HP Holley I just sold ran much better down low. I too though this motor was gonna such this cam down, and it does, as soon as I drop the hammer. Just my driving style (<2000rpms) and this cam dont seem to mix at this point very well. And to think that at one point, I though the XR286 was going to be too small!!! Good thing I didnt get the XR292, cause I would of lost power brakes for sure. I'm probably drop the cam back to a much smaller grind, possibly the 60212 again, or change out my TKO .64 to a .82 unit. Fuel injection would probably fix everything, but I'm not ready for that yet.

Its up to Jeff really, and how much his car will be in OD. 3 and 4th gear, I think he'll be OK. I ran the 60212 with solid rollers on it, also the Comp 245/252. Both picked up performance and RPM's. The 60212 was much nicer to drive around in after I stuck it back in the motor.

 

[71454Chevelle]

Vince,

Jeff was asking me about the hybrid setup. I told him that I didn't know much about the setup other than it seems to help upper rpm's hang on longer with the hyrdro-roller cam. We were both wondering about long term street use and if there was any reliability issues with the hybrid setup. We discussed the luck (performance wise) that you had and I told him a good resource to ask questions would be Chris Straub.

 

[69-CHVL]

Couple of guys here that have put maybe 20-30k miles on the hybrid setup, with no issues. Depends on the lobe design. I asked UDHarold about using SR lifter on the 60212, and he said no problem, just keep it lashed tight. I set the valves to zero-lash cold, so the running lash was about .007.

I was under the impression from Jeff that he want to keep the cam mild. I can only give him 1st hand experience how a particular cam runs in a particular combo.

Decisions, decisions....

 

[71454Chevelle]

I was under the impression from Jeff that he want to keep the cam mild.

He keeps going back and forth on what he wants with his combo. I think he would like to ran a larger cam but that d#@n streetability thing keeps getting in the way. :angry:

 

[69-CHVL]

Streetability is so subjective...

I just took my car for a spin, and its really not as bad as I made it out to be. 5th gear is essentially usless though on the backroads where I primarily run the car. Maybe that's ok for some folks, as they are buying a TKO for the highway. I need to try another carb out, but I do believe the .82 OD just may be a better fit for my needs.

 

[72BB Nova]

Streetability is playing a major factor in this. I know opinions are different when it comes to streetability, I tend to be a little conservative than most. I think I would like something in between the voodoo 60212 and the 60213 HR's. This is my first BB and they all look big to me cause I'm use to looking at SB cam's. Still have a lot of thinking and talking to do.