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  #101  
Old 05-18-2020, 12:44 PM
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I'll call ARP and see what they suggest for the ARP2000 studs. I was 115lb cold with the 8740.
115 lbs. with 8740.....seems like a lot I had problems with the threads on the studs and nuts. I tried to help the problem with different nuts, i use to use the standard 12 point 9/16" head ARP nut but the threads keep messing up, i would have to clean the threads on the studs all the time
7 get new nuts (I'm assuming they were stretching, at that time I couldn't find a better grade stud). So I changed to ARP 12 pointed nuts but with the larger 11/16" head for more thread engagement to help, so when I found a better stud I changed. I will have pics on the nuts later today.


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  #102  
Old 05-18-2020, 02:07 PM
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The 2 nuts I’m using (on the right) on my head studs and the old 8740 nut!

GTO George
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  #103  
Old 05-20-2020, 03:33 PM
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Well I’m still waiting on my head gaskets I decided to rewire the front (engine compartment) of the car.......I hate it! I’m just not that type of guy but since I’m adding my fuel level sender gauge I figured it was time well spent!


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  #104  
Old 05-31-2020, 06:33 PM
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Well I got my engine in Friday but still no head gasket, they are coming Monday. Before I bolted up convertor to flywheel I had to grind the heads of the (3) - 1/2” grade 9 bolts.....pain in the butt. Clearance between engine diaper and flywheel is almost non-existent, so I need to thin the head of the bolts down.


GTO George
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  #105  
Old 05-31-2020, 10:07 PM
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Who made that timing cover? Thanks George.

  #106  
Old 05-31-2020, 10:28 PM
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Who made that timing cover? Thanks George.
KRE........it use a sb Chevy water pump.


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  #107  
Old 05-31-2020, 11:17 PM
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Well I got my engine in Friday but still no head gasket, they are coming Monday. Before I bolted up convertor to flywheel I had to grind the heads of the (3) - 1/2” grade 9 bolts.....pain in the butt. Clearance between engine diaper and flywheel is almost non-existent, so I need to thin the head of the bolts down.


GTO George
How much do you torque those bolts to?

Stan

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  #108  
Old 06-01-2020, 12:00 AM
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How much do you torque those bolts to?

Stan
That’s a good question! I normally just hit them with my cordless 1/2” impact with blue loctite. I tried looking for the torque numbers for them but couldn’t find it, so I just did the above again. I’ve never had a problem, just wanted to torque them this time.


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  #109  
Old 06-01-2020, 12:07 AM
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Grade 9 bolts are good for 180,000 tensile strength same as standard ARP 8740 bolts.


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  #110  
Old 06-02-2020, 07:35 AM
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Usual torque is about 35-40 lb ft.

  #111  
Old 06-02-2020, 10:40 AM
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Usual torque is about 35-40 lb ft.
Wouldn’t it matter what size the bolts are?


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  #112  
Old 06-02-2020, 11:48 AM
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Usual torque is about 35-40 lb ft.
I show that for a grade 2 (1/2") and around 90 for a grade 8 (1/2"). Chart doesn't have grade 9

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  #113  
Old 06-02-2020, 12:57 PM
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Grade 9 bolts are good for 180,000 tensile strength same as standard ARP 8740 bolts.


GTO George
Stan Grade 9 is the same as a ARP 8740 bolt......tensil strength.
Actually i think mine would be torque to about 80 lbs. with my impact and 6" extension.

GTO George

  #114  
Old 06-02-2020, 01:05 PM
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I sent my carbs to APD to get redone so they can flow more fuel, I'm getting them back tomorrow. I also just ordered new jets for them 218 & 226.....talk about BIG! I have 212 jets in the carbs now.


GTO George

  #115  
Old 06-02-2020, 02:13 PM
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I show that for a grade 2 (1/2") and around 90 for a grade 8 (1/2"). Chart doesn't have grade 9

Stan

I use grade 8 and 90 sounds about right. FWIW, I would be a little concerned about grinding the heads of the bolts, George.



Jim

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7.75 @ 178 pass:
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First seven second pass(7.98): https://wwwoutube.com/watch?v=DK17...ature=youtu.be



Thanks to Paul Carter @ Koerner Racing Engines
  #116  
Old 06-02-2020, 02:41 PM
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I use grade 8 and 90 sounds about right. FWIW, I would be a little concerned about grinding the heads of the bolts, George.



Jim
I’ve been using them this way for at least a decade. I don’t have a choice I have no room between my flywheel and diaper. Right now I have Velcro to keep my diaper close to the oil pan, it (bolts) still rubs. It’s not great but it helps!


GTO George

  #117  
Old 06-02-2020, 02:54 PM
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I use grade 8 and 90 sounds about right. FWIW, I would be a little concerned about grinding the heads of the bolts, George.



Jim
If you look at a ARP flywheel bolt the heads are about or the same thickness.


GTO George

  #118  
Old 06-02-2020, 03:28 PM
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Originally Posted by GTOGEORGE View Post
If you look at a ARP flywheel bolt the heads are about or the same thickness.


GTO George



It's the grinding that bothers me, not the thickness----heat, loss of strength, etc.


Jim

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****'63 Tempest, 475" IAII, Wenzler Super Chief heads, converted to blown alcohol, Birdcatcher, Littlefield 10-71 high helix. Best pass to date: 7.67 @ 181.59 (1/4 mi.), 4.95 @ 143.67 (1/8 mi.), 1.18 (60 ft)

7.75 @ 178 pass:
https://www.youtube.com/watch?v=Iez3...ature=youtu.be

First seven second pass(7.98): https://wwwoutube.com/watch?v=DK17...ature=youtu.be



Thanks to Paul Carter @ Koerner Racing Engines
  #119  
Old 06-03-2020, 04:01 AM
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I'm not getting the picture George. How could an engine diaper be near the head of a flywheel bolt?

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  #120  
Old 06-03-2020, 05:44 AM
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"Wouldn’t it matter what size the bolts are?"
Yes, the specs I gave are factory torque/bolt sizes

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