new comp cam bolt torque

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

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

loctite for sure.

i never use loctite.

cool40 wrote:i never use loctite.

No Down side that I can see.

Lem Evans wrote:

cool40 wrote:i never use loctite.

No Down side that I can see.

Loctite cost money. LOL

X3 use the loctite

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

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

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.
Perry

466cj wrote:

Lem Evans wrote:

cool40 wrote:i never use loctite.

No Down side that I can see.

Loctite cost money. LOL

X3 use the loctite

yea,i sure would'nt want to spend any.

I get loctite for free.......................

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

Man some guys have all the luck!

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

X2,and i ain't afraid to use it

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?

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

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

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 ) 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 . 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

You still using a C-6?

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

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

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 I says " hell, it worked that way before!"
Now I'm listening better.
Thanks and have a good one!

Perry