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roller rockers, which ones?(455 sleeper)
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Posted: 12/22/12
08:19 AM
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after christmas my next buy will be roller rockers, need help deciding?
i am using 4x heads cut 40 thousands, stock double springs, stock press in studs,
small lunati cam. i would like to bolt on a set(no machineing required).
what are my options?
scorpion seem to be the least expensive, are they ok(my max 5000rpm)
any others i should look at?
will i need custom length pushrods?
any advise?
thanks
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Posted: 12/22/12
09:10 AM
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Why didn't you have screw in rocker studs installed when you had the heads cut ?
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Posted: 12/22/12
09:21 AM
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To use scorpion rockers you must have 7/16 non bottle neck studs . Are the heads installed yet ?
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pepsi1
Enthusiast
| Posts: 341
| Joined: 09/11
Posted: 12/22/12
11:34 AM
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buzzinhalfdoz:
Thats an area that really takes a beating. If the oil supply is adequate. Then I would use the Scorpians. I haven't used them, but the Dyno reesults my buddy Dave said they are Okay. He told me to make sure there is adequate room between the Retainer and the Rocker Arm .060. They will take RPM, so don't be afraid to spin that Big Block.
MERRY CHRISTMAS
Bob
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pepsi1
Enthusiast
| Posts: 341
| Joined: 09/11
Posted: 12/22/12
11:59 AM
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buzzinhalfdoz:
Jeg's P/N 249-7901-1 $13.99. Comp Cams 7.500" to 8.700" Adjustable pushrod.
Jeg's P/N 249-7702-1 $19.99. Comp Cams 6.800" to 7.800" Adjustable pushrod.
Jeg's P/N 249-7703-1 $19.99. Comp Cams 7.800" to 8.800" Adjustable pushrod.
Jeg's P/n 555-80681 $11.99. Jeg's own 7.000" to 8.170" Adjustable pushrod.
Bob
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Posted: 12/22/12
02:07 PM
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I have used the scorpion roller rockers on a couple chevy builds and they work good.
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races
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Posted: 12/23/12
07:37 AM
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i didnt do the screw in studs because of low budget build,(and possible head upgrade later)
will any brand fit the stock studs?
i did not know scorpion used the large screw in stud.
will anything fit the stock studs?
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Posted: 12/23/12
01:39 PM
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No, You will need 7/16 screw in studs to run roller rockers.
Engine builder,self taught auto body guy.
Horsepower sells engines and torque wins races
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Posted: 12/23/12
05:17 PM
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You could use stamped steel roller tip rockers .
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fastoneefi
Enthusiast
| Posts: 350
| Joined: 01/10
Posted: 12/23/12
08:40 PM
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 Pontiacman8:
No, You will need 7/16 screw in studs to run roller rockers.
That's not entirely true. Contact Harland Sharp, they make roller rockers with the underside cut to clear the stud boss and they come in 3/8 as well.
Mark
Engine builder, located in Central Florida
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Posted: 12/24/12
08:28 AM
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ok, i will give Harland Sharp a look?
thanks.
ps i might just put it off untill i can replace the heads.
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Formulajim
Enthusiast
| Posts: 380
| Joined: 02/09
Posted: 12/24/12
10:15 AM
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It's not hard to tap the holes and use screw in studs. If you plug the holes with rags and use a shop vac you should be able to do it on the car.
Drive it before your dead!
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mb68bird
Enthusiast
| Posts: 427
| Joined: 06/10
Posted: 12/24/12
02:18 PM
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Just as long as they all end up straight
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Posted: 12/24/12
06:07 PM
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/sarc
New special tapered thread by Hop Sing and company!
http://www.endoc.net/PDF/1962.pdf
/endsarc
I know, it's not red
~~
How may I serve you?
Boiled, Deep Fried, or Flambe'?
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mb68bird
Enthusiast
| Posts: 427
| Joined: 06/10
Posted: 12/25/12
11:58 AM
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F in awsome 
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