Now the Rocker studs too short! - Chevelle Tech
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post #1 of 21 (permalink) Old Feb 6th, 18, 9:55 PM Thread Starter
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Bill
 
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Now the Rocker studs too short!

Used the Straub/Foxwell video to set up my rocker geometry and ordered push rods. Now the Rocker studs are too short and the fulcrum is completely on the threads even with the preload set. Anyone know what rocker studs I need? Seems like there are 50 different ones. I have attached pictures. This engine has been a pain in the azz!
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540 BB
10 to 4 comp.
Brodix Race Rite BB-2 Plus heads
Edelbrock RPM Air Gap
Quick Fuel 950 CFM Carb
Lunati Voodoo HR 231/239 @ .050, 600/600, 110 LSA
Johnson 2116 BBR lifters
Hooker Super Comp 2" primary headers
Tremec TKO 600 .82 overdrive
3.73 Posi
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post #2 of 21 (permalink) Old Feb 6th, 18, 9:59 PM
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Mr Bill
 
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Re: Now the Rocker studs too short!

Nobody can tell you which ones you need without knowing which ones you have. You will have to pull one and measure it and then find the correct one to order.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md


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post #3 of 21 (permalink) Old Feb 6th, 18, 10:05 PM
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Re: Now the Rocker studs too short!

For some reason I cannot enlarge your pics, but either way something does not look right ? Hard to tell without a view from a different angle.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md


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post #4 of 21 (permalink) Old Feb 6th, 18, 10:16 PM
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Re: Now the Rocker studs too short!

Right click and open in new tab Bill
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post #5 of 21 (permalink) Old Feb 6th, 18, 10:18 PM Thread Starter
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Bill
 
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Couple more pictures
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540 BB
10 to 4 comp.
Brodix Race Rite BB-2 Plus heads
Edelbrock RPM Air Gap
Quick Fuel 950 CFM Carb
Lunati Voodoo HR 231/239 @ .050, 600/600, 110 LSA
Johnson 2116 BBR lifters
Hooker Super Comp 2" primary headers
Tremec TKO 600 .82 overdrive
3.73 Posi
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post #6 of 21 (permalink) Old Feb 6th, 18, 10:21 PM Thread Starter
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Bill
 
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Studs are the ones that came on the Brodix heads.


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540 BB
10 to 4 comp.
Brodix Race Rite BB-2 Plus heads
Edelbrock RPM Air Gap
Quick Fuel 950 CFM Carb
Lunati Voodoo HR 231/239 @ .050, 600/600, 110 LSA
Johnson 2116 BBR lifters
Hooker Super Comp 2" primary headers
Tremec TKO 600 .82 overdrive
3.73 Posi
William Hennke is offline  
post #7 of 21 (permalink) Old Feb 6th, 18, 10:44 PM
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Lang
 
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Re: Now the Rocker studs too short!

Quote:
Originally Posted by Dean View Post
Right click and open in new tab Bill
Thanks for that tip. I can't count how many pics never open like that.

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post #8 of 21 (permalink) Old Feb 6th, 18, 10:55 PM
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Re: Now the Rocker studs too short!

ARP 135-7202 is 2.350 OAL with 1.500" of solid shank
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post #9 of 21 (permalink) Old Feb 6th, 18, 11:14 PM
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Re: Now the Rocker studs too short!

Is it an optical delusion or is the roller hitting the tip of the valve way out to the "outside" ? What brand are the rockers ?

Bill Koustenis
Advanced Automotive Machine
Waldorf Md


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post #10 of 21 (permalink) Old Feb 6th, 18, 11:18 PM Thread Starter
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Bill
 
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Looks like that's what I need, 135-7202. Everything else looks like it's 2" or less. I can only get 6 turns on what I have now (2"). That doesn't seem like much thread and the lock screw on the Polly lock is way far in. Thanks!


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540 BB
10 to 4 comp.
Brodix Race Rite BB-2 Plus heads
Edelbrock RPM Air Gap
Quick Fuel 950 CFM Carb
Lunati Voodoo HR 231/239 @ .050, 600/600, 110 LSA
Johnson 2116 BBR lifters
Hooker Super Comp 2" primary headers
Tremec TKO 600 .82 overdrive
3.73 Posi
William Hennke is offline  
post #11 of 21 (permalink) Old Feb 6th, 18, 11:21 PM Thread Starter
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Bill
 
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It's to the outside but still on center 2/3 of valve. They are older Comp steel rockers.
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540 BB
10 to 4 comp.
Brodix Race Rite BB-2 Plus heads
Edelbrock RPM Air Gap
Quick Fuel 950 CFM Carb
Lunati Voodoo HR 231/239 @ .050, 600/600, 110 LSA
Johnson 2116 BBR lifters
Hooker Super Comp 2" primary headers
Tremec TKO 600 .82 overdrive
3.73 Posi
William Hennke is offline  
post #12 of 21 (permalink) Old Feb 6th, 18, 11:32 PM
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Mr Bill
 
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Re: Now the Rocker studs too short!

Quote:
Originally Posted by William Hennke View Post
It's to the outside but still on center 2/3 of valve. They are older Comp steel rockers.
Looks good Must have been the picture angle.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md


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post #13 of 21 (permalink) Old Feb 7th, 18, 1:27 AM
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Re: Now the Rocker studs too short!

Quote:
Originally Posted by William Hennke View Post
Looks like that's what I need, 135-7202. Everything else looks like it's 2" or less. I can only get 6 turns on what I have now (2"). That doesn't seem like much thread and the lock screw on the Polly lock is way far in. Thanks!
I had to use those same Arp 135-7202 extra long studs on some Dart iron bbc heads when i ran into the same problem you did with regular length studs, not enough thread engagement.
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post #14 of 21 (permalink) Old Feb 7th, 18, 8:11 PM
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Re: Now the Rocker studs too short!

Quote:
Originally Posted by fr8dog View Post
I had to use those same Arp 135-7202 extra long studs on some Dart iron bbc heads when i ran into the same problem you did with regular length studs, not enough thread engagement.

Same here.
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post #15 of 21 (permalink) Old Feb 7th, 18, 9:19 PM
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Re: Now the Rocker studs too short!

135-7202 on the intakes only when I set up AFR 265 and Straub rockers. 6 turns thread engagement is acceptable. Here are a couple options.
135-7202
2.35" installed height, .85" adjuster thread, .85" screw in length, 3.2" OAL, 1.5" shank
235-7204
2" installed height, .7" adjuster thread, .82" screw in length, 2.82" OAL, 1.3" shank
235-7203
2" installed height, .7" adjuster thread, 1.64" screw in length, 3.65" OAL, 1.3" shank
334-7203
2.1" installed height, .8" adjuster thread, .75" screw in length, 2.85" OAL, 1.3" shank
235-7202
2" installed height, 1.0" adjuster thread, .82" screw in length, 2.82" OAL, 1.0" shank
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