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Author Topic:   Cam Question
smayo964
Member
posted April 30, 2002 07:19 AM
This is a question for all you wizbam cam experts. In all seriousness though, have a good hydualic comp cam that I ran in my street stock (XE274H). Going to put it in a small mod engine that will turn about the same RPM's or a little more. I had orginally ran the cam with fast bleed lifters and 1.5 rockers and turned the engine up to 6,800rpm. In the new engine I was going to use 1.6 rollers and thinking of using solid lifters and setting .004-.005 lash. Can you run the solid lifters on a hydraulic cam without losing to much performance? Thank in advance for the info.


ford5
Member
posted April 30, 2002 07:42 AM
dont run solid lifters on a hydraulic cam ,that will not work , due to the fact that the ramps are different grinds


Monster
Member
posted April 30, 2002 06:01 PM
Ford 5 is correct. There are 'take up' ramps on a solid cam that gather all the valve train slack in before really accelerating the valve hard. On a hydraulic cam, the cushion is in the lifter, and there are no ramps, just acceleration. If you open up lash too much on a solid cam, you will suffer valve train failure, the same as if you would run solid lifters on a hydraulic cam. Now for a cheater drag race motor, welll...


EVANSRACING24E
Member
posted April 30, 2002 10:00 PM
they are right. the solid lifters will eat the cam up fast.


smayo964
Member
posted May 01, 2002 08:18 AM
Thanx for the info. Will run the bleeds again I guess until I change the cam. Thanx again.


smayo964
Member
posted May 01, 2002 01:58 PM
Well, just got a response back from guys at Comp Cam concerning the lifter issue. They state you can run the solid lifter on the hydraulic cam, but I have to keep my lash at .010 max. The guy on the phone stated he's run that swap many times, etc. Also, gave me the part number of the lifter to use. They state the cam should work fine. Well, time will tell.


powerglides
Member
posted May 02, 2002 06:13 AM
Well, good question. One could guess that since they state you can run a hydraulic with solid lifters using lash, you could run a solid cam the opposite. I would recommend contacting the cam company and asking their tech staff. I sent Comp Cams an e-mail before I posted my inquirey here, then called them after I got their response to make sure it was correct. hahahahaha


CUSTOMPERFORMANCE
Member
posted May 02, 2002 07:19 AM
Its hard to beleive a cam company would say you can run solid lifters on a hydraulic cam.


racer17j
Member
posted May 02, 2002 11:15 AM
we have to run a hydrolic cam and alot of guys are running solid with hydrolic lifters but i have never heard of runnig hydro with solid lifters myslef if i could run a solid i wouldn't mess with anything hydrolic


ford5
Member
posted May 03, 2002 07:12 AM
i agree with custom performance on this issue, and i would not try it


#28
Member
posted May 03, 2002 09:18 AM
Someone at Comp. had a happy lunch hour ! Maybe a little too much smoke on the brain ..LOL

While it is possible to run a solid on a hyd. cam , you will not produce max power because of the tight lash that must be run . Not to mention that the wear on the cam would be accelerated greatly . As mentioned before , a hyd. cam does not have the take up ramp that a solid cam does .....thus needing the tight lash that a hyd. runs to keep from breaking parts .

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


ford5
Member
posted May 04, 2002 04:17 PM
thank you steve, !!! case closed


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