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roller rockers/studs
#1
runninpony 
Hi ALL, I received my roller rockers for 3/8" studs. Then realized my studs are in fact 3/8" measured at the pressed in portion and on the threaded portion the studs only measure 5/16" (in fact they are 5/16"-24). The rollers of course come with 3/8" locking nuts which are too big to screw on tight! What does one have to do to make this work? Thanks for any advice!


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71-73 Mustangs never die, they just go faster!
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#2
Convert to 3/8" screw in studs. Chuck
[+] 1 user Likes c9zx's post
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#3
(08-26-2018, 08:07 AM)c9zx Wrote: Convert to 3/8" screw in studs. Chuck

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#4
Yep. Convert to 3/8

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
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#5
runninpony 
Are there any 5/16" locking nuts? How do I convert to 3/8" studs? How much is involved in doing that? Machine shop involvement? Thanks!

71-73 Mustangs never die, they just go faster!
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#6
You can not use 3/8" trunion rocker on a 5/16" stud. The conversion is best done by a machine shop that can accurately drill and tap the heads. Chuck
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#7
Are the threads in the head stock?? They make kits so you don't have to machine the heads. They are not designed for high hp or a lot of spring pressure, but in your average build will hold up fine. I believe something like this.... https://www.summitracing.com/parts/crn-3.../make/ford

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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#8
runninpony 
Yes the threads are stock. What are trunion rockers? Someone talked me into buying these. I think there's too much involved I'm going back to my old regular rockers. Thanks for the replies but never mind. I was going to install my engine in a few weeks anyway.

71-73 Mustangs never die, they just go faster!
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#9
The trunion is the center pivot points. Chuck
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#10
A trunnion is the round portion of the rocker arm that the stud goes through and serves as the pivot.

Are your rocker arm studs screwed in or pressed in? I ask because in your first post you say they measure 3/8" at the pressed in portion.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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