new comp cam bolt torque

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new comp cam bolt torque

Post  hpwdboss1 on July 1st 2012, 6:43 pm

Putting in my new comp cam from Lem. Thanks Lem! 3/8" -16 bolt, correct length grade 8. What torque# should I use?

Perry
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Re: new comp cam bolt torque

Post  richter69 on July 1st 2012, 6:52 pm

I wanna say the ARP bolt that size was 45 ftlbs, make sure its got a good washer under it also.
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Re: cam bolt

Post  hpwdboss1 on July 1st 2012, 7:33 pm

ARP bolt, washer from brand X balancer, ARP moly under the head, red loctite on thread, 45# is where I am but I was second guessing myself and needed reassuring!
Thanks again guys!!

Perry
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Re: new comp cam bolt torque

Post  Lem Evans on July 1st 2012, 7:55 pm

loctite for sure.

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Re: new comp cam bolt torque

Post  cool40 on July 1st 2012, 7:57 pm

i never use loctite. Surprised
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Re: new comp cam bolt torque

Post  Lem Evans on July 1st 2012, 8:01 pm

cool40 wrote:i never use loctite. Surprised

No Down side that I can see.

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Re: new comp cam bolt torque

Post  466cj on July 1st 2012, 10:10 pm

Lem Evans wrote:
cool40 wrote:i never use loctite. Surprised

No Down side that I can see.

Loctite cost money. LOL

X3 use the loctite

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Re: new comp cam bolt torque

Post  Gregaust on July 2nd 2012, 1:28 am

hpwdboss1 wrote: ARP bolt, washer from brand X balancer, Perry

Those washers are 7/16??????

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Re: Cam bolt

Post  hpwdboss1 on July 2nd 2012, 6:05 am

Greg, you are correct about the 7/16" diam., but I have an additional substantial flat washer with a 3/8" hole and feel I'll be alright. Thanks guys! I should have this thing alive again in a couple of days. Very Happy
Perry
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Re: new comp cam bolt torque

Post  cool40 on July 2nd 2012, 7:14 pm

466cj wrote:
Lem Evans wrote:
cool40 wrote:i never use loctite. Surprised

No Down side that I can see.

Loctite cost money. LOL

X3 use the loctite
yea,i sure would'nt want to spend any. Razz
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Re: new comp cam bolt torque

Post  richter69 on July 2nd 2012, 8:11 pm

I get loctite for free.......................
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Re: new comp cam bolt torque

Post  466cj on July 2nd 2012, 11:49 pm

richter69 wrote:I get loctite for free.......................

Man some guys have all the luck!

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Re: new comp cam bolt torque

Post  bbf-falcon on July 5th 2012, 7:15 pm

[quote="richter69"]I get loctite for free

X2,and i ain't afraid to use it Shocked Laughing

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Re: new comp cam bolt torque

Post  4604X4 on July 11th 2012, 2:51 pm

hpwdboss1 wrote: Putting in my new comp cam from Lem. Thanks Lem! 3/8" -16 bolt, correct length grade 8. What torque# should I use?

Perry

I think this thread is a good place to ask a cam bolt related question. I'm swapping cams now and am wanting to use quailty parts wherever possible. So I thought it would be worth the couple of bucks to get a "good" bolt like an ARP but I can't find one in the size I need (at JEGs or SUMMIT).

What is the normal cam bolt size? OP has a 3/8-16 cam/bolt, but both of my aftermarket cams (Crane and Engel) are 7/16-24 thread.

Do I have two odd ball cams, or are all/most of the performance cams using a 7/16-24 cam gear retaining bolt? Is a grade 8 bolt desired - or is the flex/stretch of a grade 5 more desirable?
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Re: new comp cam bolt torque

Post  Lem Evans on July 11th 2012, 3:10 pm

There are lots of the roller cam cores that comp gets that are 3/8" bolts....all of the flat tappet ones are 3/8".
I always request that the roller cams have the 7/16" threads...if Perry's cam is a roller with the 3/8" someone @ Comp dropped the ball Evil or Very Mad

A properly installed grade 8 seems to do a good job.

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Re: cam bolt....

Post  hpwdboss1 on July 15th 2012, 7:41 am

Just a little more info... Lem speced a cam for my tractor. It is a flat tappet shaft with the 3/8 bolt and two dowels. Lem said I did not really need the second dowel, but I once had pin breakage ( my fault Embarassed ) trouble and now believe in over kill! Besides, I used the new double pinnned end as a pattern to make a fixture to drill cams and timing gears.
Got the tractor running this week and pulled Friday night. New set of titan V cut tires by Ira Banter (thanks Ira). A alot more horse with fresh 472, ran really strong Very Happy . Enough bite and power to break the next link in the chain! Tranny man says he will call today with damage report, but he thinks the output shaft twisted off. It's been run in this tractor for 4 years, and was factory stuff from long ago. I don't know if there are aftermarket shafts with more strength, but that could be next. It's always one thing or another.

Thanks all!
Perry
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Re: new comp cam bolt torque

Post  466cj on July 15th 2012, 1:28 pm

You still using a C-6?

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Re: cam bolt torque

Post  hpwdboss1 on July 15th 2012, 6:48 pm

Yeah still with a C6. Rules dictate automotive automatic, C6 lets me get 2.71 ratio. Trans man called today and had news that I twisted the center out of the planet carrier, so tommorrow I go to Teal Automotive for steel 6 planet and new ring gear.Hope it stays together at Preble pull next Friday!

Perry
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Re: new comp cam bolt torque

Post  LETHAL_DOSE on July 18th 2012, 8:13 am

Who does your transmission work for you? When I ran an automatic, I used Dan Dishon out of Logansport. He was very helpful it getting the C-6 tranny to live in a pulling application. I took mine to him every winter for a freshen up job. He would only replace bad components(if there were any), and charge very little to go through it. That was 1 thing I never had to worry about. Good luck

Mike
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Re: Cam boly...

Post  hpwdboss1 on July 18th 2012, 11:02 am

Fellow named Lyle Meece around here who's done quite a bit of aautomatic work over the years for us. Warned me about the aluminum carrier ya know, but the 2.48 gear had the same aluminum style. So in my infinite wisdom Embarassed I says " hell, it worked that way before!"
Now I'm listening better.
Thanks and have a good one!

Perry
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