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Author Topic:   solid camshaft question
pbrcowboy2
unregistered
posted April 27, 2004 06:52 PM           
GREAT QUESTION HERE!!!! Can or can you not run a solid cam in a "stock" motor we have a motor out of a 79 truck its a 350 standard bore standard heads 882's 4 barrel intake with a holley 4412 I was told that we could run a solid cam with hydralic lifters and pushrods then was told tonite that we COULD NOT run said setup i need to know for sure if this will work!!!!!! thanks guys


jay116
Member
posted April 27, 2004 07:07 PM
you cant run hydraulic lifters on a solid cam but you can run the solid cam and solid lifters in that motor.

------------------
Jason Boivin
http://www.rcracing-team.com


racer17j
Member
posted April 27, 2004 07:42 PM
hey buddy i have a good b mod cam i'll sell ya for 50 with lifters midwest #8


iowa_dirt_track_girl
Member
posted April 27, 2004 08:54 PM
well first thing that i would say to the guy that told you that is (man your a idiot ) LOL
you can run solid lifters on a hydrylic cam if you really wanted to but WHY
The thing to look out for in camshafts is the cam bearing journal size you dont get to technical in that unless you are running a roller bearing journal in the block but in your case i wouldnt even wory about that you pretty much can ruin any cam in your motor wether or not it is solid or hydrylic the thing that you would want to do is install restrictors in the back of the block where the back of the cam is you should see three holes back there the restrictors go in the two outer holes but this is also not nessesary it only controls loil flow to the lifters and when running a solid cam you dont need the oil flow to the lifters as you would hydralic liferts (someguys even run restrictors in a hydralic motor)
Hope this helps


akadirtracer7
Member
posted April 28, 2004 05:24 AM
If your going to run restrictors with rockers with fulcrums watch it,I fryed a set of rockers doing that.Rollers will work but fulcrums need more oil.


chomme
Member
posted April 28, 2004 11:57 AM
you can run hydraulic lifters with a solid cam.i am doin it this year and after 10 nights no problems yet.had a friend do it last year and had 30 nights on his with no problems.as far as i know all it does is lower the lift of the cam.


iowa_dirt_track_girl
Member
posted April 29, 2004 07:29 PM
you guys are saying that you need to run roller rockers and not stamped steel rockers with restrictors your full of s**t
many many many people run stock stamped steel rockers with restrictors and roller tiped rockers for YEARS

Like I said before some people are running restrictors with a hydralic cam but they DO drill the restrictors out a little for more oil flow to the lifter

So what do you think that they used to run pipe cleaners in the pushrod four it was to help direct more oil flow to the bearing and not the top end where you dont need the oil flow as bad but yes you do need some oil of course but you dont need the pressure to run to the solid lifters as you would hydralics

[This message has been edited by iowa_dirt_track_girl (edited April 29, 2004).]

[This message has been edited by iowa_dirt_track_girl (edited April 29, 2004).]

bigcityracer
Member
posted April 29, 2004 07:50 PM
Everyone here seems to think they know the correct answer, and they don't. I purchased a solid cam and hydrolic lifter that a cam manufacture recomended and switched over to a solid lifters later, still using the same cam, with no problems. Call a cam manufacture and ask them that question and they will sell you the correct parts. In know way do I mean any solid cam will work with hydrolic lifters or oppisite. But there are some cam grinds that work with either.


jay116
Member
posted April 29, 2004 08:45 PM
Big City I agree with you 100%. I just never thought that anyone would want to mix up solids and hydraulics. But calling a cam grinder is the best answer there is.
This forum is sponsored by one as a matter of fact. I emailed him all my car and track specs and got a recommendation. I am still building so havent run it yet.

------------------
Jason Boivin
http://www.rcracing-team.com


MrB&M
Member
posted April 29, 2004 09:01 PM
ladies and gentlemen
solid lifters should not be run on a hyd. cam because a hyd. cam has a more aggressive ramp rate than a solid, generally. The hydraulic lifter on a hyd. cam takes the shock out of the initial lift that a solid lifter cannot do at beginning lift. therefore a solid lift camshaft itself has an easier initial ramp rate until say .020 lift just to get the lifter started in the upwards position
So bottom line is, if you wanted to, you can run hyd. lifters on the solid cam but it wouldn't be good to run solid lifters on the Hydraulic camshaft.


iowa_dirt_track_girl
Member
posted April 29, 2004 11:04 PM
Let me help to clarify why i stated that to begin with
We run a claim class sometimes you have to run what you have cause they can claim the motors for $325 there have been times we run camshafts that we no idea what they are and the numbers are ground off of them so other then taking it to a cam doctor wich takes time and money we just run what we have and try to get it close
What brought up that statement was ONE time we had a hydralic cam and no lifeters you back when they were hard to get by themselves
and we put the solid lifters on that cam to run a show we never had to wory anymore about it cause it got claimed that night
I dont know why you guys doubt me and waht I say is cause iam a girl???


77k
Member
posted April 30, 2004 03:20 AM
I have put solid lifters on a hyd cam to pull more vac when running under vac rules.You can gain a couple pounds.


gerald berry jr
Member
posted April 30, 2004 08:57 AM
you can run any cam with any lifters if you want but thats defeating the purpose run solids with solids you'll be better off,and forget oil restrictors,whether they work or not,you don't need them,unless your running a 40,000 410 motor you don't need to worry about 2hp from oil dripping on the crank or valve seals leaking,chevy engineers made a pretty good motor the first time around.


Ego Racing
Member
posted April 30, 2004 12:49 PM
gerald berry jr. 2hp? I have seen dyno sheets that say it is more like 30hp on a 350hp motor. Ask Dave Pletcher from Pletcher Racing in St Petersburg Florida, I think it was his Dyno the engine was on.


iowa_dirt_track_girl
Member
posted May 01, 2004 03:26 AM
Restrictors direct more oil to the bearings anyways so when your going down the straight aways all your oil dont go to the top end and dont starve your motor for oil in the corners on a stock pan setup this is in a wet sump motor that iam talking about and Yes dry sump motors use them also



racerguy500
Member
posted May 01, 2004 06:29 AM
Restrictors aren't about making horsepower, they are to keep oil in the pan not on the top. Without them you damage or spin bearings. Use the rocker arm fulcrums with grooves to keep oil in there and you won't burn them up. I am sure many have gotten away without them but every cam manufacturer I have talked to told me I had to have them in a solid lifter small block chevy on a cirlce track. I can't afford the gamble so I have always used them except once, was in a hurry and forgot about them. 7 laps later had a spun main bearing just like they said I would. As far as different lifters on different cams, I wouldn't try it but I would call the cam maker and ask them. I would think you could as they don't know what they are but not sure what you are expecting to gain though.



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