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  #76 (permalink)  
Old 12-17-2012, 05:59 PM
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Quote:
Originally Posted by cobalt327 View Post
You need not worry a bit about it! I would rather spend an hour here than two minutes at another current thread where the OP is a total jerk/troll/a-hole.

Scorpion is a good brand and I have actually used them in the past. I didn't know they had come out w/steel Platinum series rockers. The aluminum rockers are good to an ungodly amount of spring pressure (I don't recall how much but it was a LOT) so I wouldn't worry a bit about their strength, even w/a narrow body. As long as they clear the center bolt valve covers you're good to go, IMO. Just be sure to match the stud size of the head to the rocker when you order them.

First off I have nothing but respect for all of the guys that invest their time and knowledge helping young gear heads figure it out and I ALWAYS remember that I dont have all the answers. I try to take full advantage of the resources available on this forum. THANKS!

Now, I am confused.
Does scorpion even make a steel rocker? JEGS has a selection of scorpion rockers listed under "STEEL ROCKERS", "race" "endurance" "platinum"
Summit has NOT ONE scorpion rocker listed under steel, only alum.

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  #77 (permalink)  
Old 12-17-2012, 06:29 PM
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Regardless, One of these three will be the rocker I get.
Just trying to figure out which would be the best for my daily driver.

endurance race or platinum.

Do you only see the benefits of a lightweight rocker arm at HIGH rpms? I dont plan on revving past 5500 but I DO want to go overkill on some parts.


Well sure havent seen very much on the net about the platinum series, Unless I catch some wind otherwise, These will be the ones I get. Im going to give Scorpion a call in the morning and check the spring pressure ratings on the endurance compared to the plats.

I just assume the platinums would be weaker with their lighter weight. My springs are 135 lbs. @ 1.750, 325 lbs @ 1.200 1.250 diameter

Last edited by 0trbo4myCHEVUICK; 12-17-2012 at 06:42 PM.
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  #78 (permalink)  
Old 12-17-2012, 07:24 PM
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Should be noted that it looks like Lunati recommends
Seat Load: 108 lbs @ 1.750 in.
* Open Load: 339 lbs @ 1.250 in.


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  #79 (permalink)  
Old 12-17-2012, 08:25 PM
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I'm going by what you said:

Quote:
Im wondering about these scorpion steel platinum series rockers on the vortecs(guideplates)..... Wondering how they compare with the heavier endurance or race series.
Maybe you made a typo above?
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  #80 (permalink)  
Old 12-17-2012, 09:11 PM
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Anyway, the Platinum series aluminum rockers will be great. You need not worry about strength but sure, talk to them to verify the fit w/the Vortec/center bolt valve covers.

You mentioned timing sets earlier. I have used the Cloyes p/n 9-3157 set- it's a true roller but not a double roller. There's also the 9-1157 double roller but I have not used it so cannot say if the block needs to be clearanced or the timing cover spaced out to use it or what. I bet if you research it you'll find out, though. Pro Gear is another name that comes up a lot w/the LT1/4 crowd. You might want to see what they have for the Gen 1 SBC w/an OEM roller set up.

I have no problem using a single roller timing chain/set. Double roller sounds like it's stronger, but if it were all that and a bag o' chips I'd expect to see it on a motorcycle! lol
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  #81 (permalink)  
Old 12-17-2012, 10:39 PM
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Yeah Cobalt.The single larger motorcycle style link timing chains are superior.
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  #82 (permalink)  
Old 12-18-2012, 08:22 AM
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Quote:
Originally Posted by cobalt327 View Post
I'm going by what you said:

Maybe you made a typo above?
I assumed they were steel because they are listed under steel on JEGS
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  #83 (permalink)  
Old 12-18-2012, 10:31 AM
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Well cool, just got off the phone with lunati. The man said the lt1/lt4 voodoo cams DO have the fuel pump lobe and the dowel pin is designed to be knocked back to proper length for a non lt1/lt4 OE roller block. So no grinding!

He also recommended timing set
Full Roller Timing Set - Chevrolet 262-400 (w/roller cam) 3 keyway - Lunati Power

Full Roller Timing Set - Chevrolet 262-400 (w/roller cam) 3 keyway
Product Description
Full roller timing set for Chevrolet 262-400 (w/ roller cam) applications
•Keyway(s): Three (+-4, 0)
•Roller Diameter: 0.250 in.
Part Number: 93026
Previoius Part Number: 93026LUN
Jobber Price: $70.27

He also stated the recommended valve springs for this cam are too weak. He couldn't say for sure about my springs without knowing the brand and type.
I gave him the spring specs I have and he said that they SOUND perfect for the application, but could not know for sure without further information.
Im going to run the springs I have.

I was also getting conflicting information on if the lift numbers were advertised with a 1.5 or 1.6 rocker. Some sites just say "factory rocker arm ratio" and some sites say with a 1.6 rocker.
He confirmed the lift numbers are with a 1.5 ratio rocker, which is a relief.

Gonna call scorpion next and try to talk rockers with them.
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  #84 (permalink)  
Old 12-18-2012, 02:09 PM
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Poor ol truck of mine. Almost brings a tear to my eye. It will see the road again soon.
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  #85 (permalink)  
Old 12-18-2012, 05:08 PM
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So if my heads have .040 milled off, and the block has not been decked. Do I simply subtract .040 off of the stock pushrod length? What other things are there that will effect required pushrod length?I know theres a tool and a procedure to check involving a sharpie and a solid lifter. I dont have either one of those three things lol.
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  #86 (permalink)  
Old 12-18-2012, 05:58 PM
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Quote:
Originally Posted by 0trbo4myCHEVUICK View Post
So if my heads have .040 milled off, and the block has not been decked. Do I simply subtract .040 off of the stock pushrod length? What other things are there that will effect required pushrod length?I know theres a tool and a procedure to check involving a sharpie and a solid lifter. I dont have either one of those three things lol.
You really cannot just subtract the amount milled to get the accuracy needed. Using published figures to calculate the p-rod length can also give inaccurate numbers. One good way to know for sure is to physically mock up the valve train to get the correct geometry. I like to do this with an adjustable pushrod (click on image for a short piece on making one).

Points to check
Geometry

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  #87 (permalink)  
Old 12-18-2012, 09:21 PM
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rock !
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  #88 (permalink)  
Old 12-19-2012, 09:22 AM
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Originally Posted by avangeline View Post
rom the pictues it looks like your block has new pistons in it.
new pistons, resized rods, recon crank, new voodoo roller cam, new ls7 lifters, new valve springs, new valves, guideplates, reconditioned vortec heads with 59cc chambers, new pushrods(soon), new rockers(soon), new intake, new carb (Soon)



Ive really been hoping to get a tech inspection on this build soon. I know he needs more info and in a more organized post as well. lol, I am aware the build and parts chosen are scattered throughout 7 pages of blabble and would never ask anyone to inspect the build in that fassion.

Im going to compile all of my information about this build including parts and measurments and everything else I can possibly think of into one clean organized post. Then hopefully the inspector will run through.

Im sure all the 350 builds get pretty old and boring for most of you guys, I def understand.
Doing live sound engineering for jazz music 5 or 6 nights a week gets old too me too! And audio is ONE of my top passions. Under the old school chevy of course!

Last edited by 0trbo4myCHEVUICK; 12-19-2012 at 09:39 AM.
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  #89 (permalink)  
Old 12-19-2012, 10:42 AM
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Quote:
Originally Posted by 0trbo4myCHEVUICK View Post
Ive really been hoping to get a tech inspection on this build soon. I know he needs more info and in a more organized post as well. lol, I am aware the build and parts chosen are scattered throughout 7 pages of blabble and would never ask anyone to inspect the build in that fassion.

Im going to compile all of my information about this build including parts and measurments and everything else I can possibly think of into one clean organized post. Then hopefully the inspector will run through.
Required data
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  #90 (permalink)  
Old 12-19-2012, 03:12 PM
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............ Not sure what to think here.

I measured and I have 1/8"... Is that normal? I used what I had lol but I did replace the butter knife with several other straight edges in fear that the knife was not straight. I got the same measurements.
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