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yes, but you will need to install taller valve covers or double gasket your existing ones to gain clearance for the lock nuts. You should also check your valvetrain geometry.
If you're just changing them for the sake of having roller rockers, save your money and leave the stock rockers on.
Yes you can,......but it may also be necessary to replace your valve covers......you don't need them however and the OE and aftermarket stock rockers will handle almost any HP you can provide.....add some new nuts will keep there adjustment for thousands of miles.......
but you don't get bragging rights with stock rockers......
Just wanted to know I had been told that you could not. Thanks ben and by the way would you gain any hp worth messing with or any other motor life advantage?
Just wanted to know I had been told that you could not. Thanks ben and by the way would you gain any hp worth messing with or any other motor life advantage?
any gain you realize will not be noticed until you do the swap!
the comp cams roller tipped models will fit under the stock covers and their ratio's are true to form, unlike the stamped steel stockers that can vary a lot....go for it......
Just wanted to know I had been told that you could not. Thanks ben and by the way would you gain any hp worth messing with or any other motor life advantage?
On an otherwise stock motor, roller rockers wouldn't be my first choice to spend money on if you're looking for any performance gain.
If your motor has been 'built' (IE revised intake, exhaust, cam, heads etc) than roller rockers have their place, but on an otherwise stock motor, save your money.
Mind if I ask what the itch is to get roller rockers?
Depending on the engine and heads you have, some roller rockers claim they will fit under stock covers-
I just bought some Scorpion roller rockers for my 409 SBC that have short poly locks (their Endurance series) that they say will fit under my stock aluminum valve covers.
I run thick valve cover gaskets regardless.
I'll let you know if they really fit ;-)
Elm
its an incremental change kind of thing, it wont give you 50 horsepower but it might give you 10 or 15. combine that with a couple other modifications and you will get 50 . you can put higher lift rockers on and possibly gain a little more. but you can most assuredly put them on a stock motor.
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
The LS7 427ci has a roller fulcrum and no roller on the tip apparently they were / still are having problems keeping the little roller needles in the fulcrum and there have been countless failures on new C6 Vettes.
I have seen a video of a roller tip rocker in action when the motor is running and most of the time the roller stays stationary and just slides across the valve stem just like a stamped steel rocker would.
I don't know why anyone would buy these things, now shaft rockers on a street motor makes much more sense
Well the motor has been tinkered with its a 468, 4340 eagle crank,comp mag hydraulic cam & lifter kit, but it still has the 3deuces to make it look factory. Just thought about the roller rockers after I had it put back together, so I needed ya'lls input!! Thanks guys
Just wanted to know I had been told that you could not. Thanks ben and by the way would you gain any hp worth messing with or any other motor life advantage?
You won't see any hp increase unless you go to a higher ratio lift rocker. Even then, it won't be much. The 'full ratio' stuff you see in the ads is just markeing hype. The only place roller tip rockers belong is in the trash can.
Agree with MH, Harland Sharp are great rockers and aren't Chinese.
Last edited by Ben Lurkin; Jan 19, 2012 at 07:02 PM.
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Just tell them you have roller rockers and stud girdle at the car show and don't forget to tell them "it's around 500 horse" the most common line you will hear at car shows for 350ci motors
So it sounds like there is not much hp gain but what about helping on engine wear?
Since your engine has been hot rodded a bit, and since its a big block (meaning 1.7 rockers), I think your at the point where rollers would offer you a bit of an advantage in performance and wear.
They certainly aren't mandatory at this point, but I would probably use them if it were my car.