In the process of a stage 1 put the cam in the other night every thing went fine torqued the case bolts 90in. Pounds in the proper sequence. Sat down to drink a beer maybe 5 to 10 min after and here a ping sound from the motor. Really had me worried but retired for the night cause the beer was tasting to good. This morning I noticed that I couldn't turn the motor over by hand so decided to tear it down again and this is what I found .


1754 gt pushed by stock 35 gtr

Looks like improper tooth alighnment with the governor gear, but I could be wrong.

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^^ this,

You can see the governor gear marks on the cam. Man that sucks! Also the case bolt torque specs should be 200 in. the oil pump to case cover is 90.

Not saying y'all are wrong but the reason the marks are there is the first time I slid it on it was off so I adjusted it then slid it back on . I just looked at the gov gear there isn't even a mark on it . Wouldn't it have been hard to bolt up if it wasn't aligned right? Don't remember having any trouble . Thanks for the clarification on the torque specs .


1754 gt pushed by stock 35 gtr

Also since I mistakenly torqued them to only 90in. Pounds . Would that have been enough pressure to crack the cam like that ?


1754 gt pushed by stock 35 gtr

Did you have to bump the cover around to get it to line up or go on? It doesn't take much pressure to crack that cast.

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From what I remember it went on fairly easy . But I'm leaning towards what y'all are saying . I don't see any thing else that could have happened . Unless it was already cracked and I didn't see it.


1754 gt pushed by stock 35 gtr

Do they recommmend that hole as the timming mark in the cam?

Yeah they did had a tag on it when I received it saying to use the big hole .


1754 gt pushed by stock 35 gtr

The only thing I can think of is something didn't line up right when putting the cover on. But then again u wouldn't of thought the cover would have went all the way on without forcing it.

Pvt doesnt make the 493f cam. Hope this helps.

The only thing on the # 1 cylinder side the cam gear that could have caused a binding issue would be the governor gear. if you look at the cams breaking point and split the difference again it puts at 7:30 -8 o-clock the center at the govern gear.

Maybe try doing it sober when you put it back together?

so EVT is making cams again? but my buddys cam from PVT had a tag saying use the big timing mark?

Actually now that I look it is an pvt


1754 gt pushed by stock 35 gtr

send it back

Der... just saw the above posts.

My bad fellas thought I was getting a 493 I'd edit it if I could but can't edit the title


1754 gt pushed by stock 35 gtr

You can change the title if you edit the first post, but it ain't no big deal. It doesn't help you solve your problem either way.

Some of Al's blanks as of recently were missed marked, this is the reason for the other timing mark and the tag explaining what timing mark to use.

We'll good news there sending me a new cam in the mail [SMILING FACE WITH OPEN MOUTH AND COLD SWEAT]


1754 gt pushed by stock 35 gtr

Wow that's good of them. Lay off the booze this time

Haha I'll try ..


1754 gt pushed by stock 35 gtr

round 2... hahaha

also remember 200in lbs I bought motor they didn't torque to corret and lost 3 bolts and it leaked before I lost bolts now doesn't leak a drop