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3/8 ARP 200,000 psi cam bolt and thin hard washer ,is the washer to thin

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Lem Evans
David Willingham
bbf-falcon
342g
10SHOTS
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3/8 ARP 200,000 psi cam bolt and thin hard washer ,is the washer to thin Empty 3/8 ARP 200,000 psi cam bolt and thin hard washer ,is the washer to thin

Post  10SHOTS April 8th 2011, 11:49 am

I got my new cam and it is double pined with a 3/8 bolt. i ordered a new arp cam bolt and the washer is alot thiner that the factor washer , do you guy use the arp thin washer or the thick factory washer . the arp washer just looks thin to me. is the arp washer good enough ?


Last edited by 10SHOTS on April 8th 2011, 12:52 pm; edited 2 times in total
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Post  342g April 8th 2011, 12:04 pm

Mine is a washer off a small block chevy, thats what everyone told me to use, it is darn thick.

I have a washer if you need it, send me a addy, and its yours.
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Post  342g April 8th 2011, 5:50 pm

Did you get my p.m.?
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Post  bbf-falcon April 8th 2011, 9:30 pm

I got mine at Autozone. Its a Crank bolt & Washer kit for a SBC. The grade 8 washer is 1/4" thick.

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Post  David Willingham April 8th 2011, 10:09 pm

Use the thick one.
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Post  Lem Evans April 8th 2011, 10:14 pm

If you gotta long enough bolt.......use both.

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Post  512Fairlane April 8th 2011, 10:50 pm

My ARP bolt was too long. It bottomed out in the cam the last 2 threads. Caused me to shear the cam pin because when we torqued the bolt it gave an incorrect reading. Make sure it goes in all the way finger tight before torquing.
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Post  342g April 9th 2011, 12:13 am

512Fairlane wrote:My ARP bolt was too long. It bottomed out in the cam the last 2 threads. Caused me to shear the cam pin because when we torqued the bolt it gave an incorrect reading. Make sure it goes in all the way finger tight before torquing.

When you take the oil slinger off, suppose to use a thicker washer, or a shorter bolt, happens to the best of us. Laughing
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Post  f250mike April 9th 2011, 12:23 am

I have the ARP bolt and thin washer but I still have the fuel pump eccentric bolted on.
My guess is the thick washer takes the place of the eccentric.
Is this the case?

mike
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Post  Lem Evans April 10th 2011, 6:23 pm

Yes, if you do not have an eccentric the washer will need to be thicker i.m.o.

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Post  Lem Evans April 10th 2011, 6:32 pm

Cam with 7/16" bolt and huge cam washer..
3/8 ARP 200,000 psi cam bolt and thin hard washer ,is the washer to thin DG547002Small

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Post  Barry_R April 13th 2011, 7:22 am

We've just gone ahead and started making our own cam washers out of 4340. Really thick.
A thin washer will deform and the bolt will come loose. And then all the parts will kiss each other and your wallet will shrink.

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Post  CP598 April 13th 2011, 7:08 pm

bbf-falcon wrote:I got mine at Autozone. Its a Crank bolt & Washer kit for a SBC. The grade 8 washer is 1/4" thick.

If I remember correctly this is what I used as well.
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