Hows this happens with only 36k miles?

[3400-95-Modified]

YES!! I called that one....


Sorry to hear that though... But hell if you think about it this is better, you may not have the money right away but at least when it goes back together you can say it has a cam to support boost... where Ricky doesn't... you may have the edge on him.... till he gets his 3500 thing done.

[loner666]

lol..we'll see..waiting on ben to get back to me on a time frame..hopefully it wont be long..i need a car

[PCGUY112887]

Why in the world would something like that snap?

Your making me afraid to turn my cammed 3500 over

[loner666]

lol..no idea..the only thing the engine had done was LS6 valve springs and it an perfectly for 3 month then this just happened while hearded to the performance shop

[3400-95-Modified]

It was the LS6 springs on a stock cam.

Aftermarket cams should have a stronger pin than the stock one.

[loner666]

how is it theres alot of guys using them on stock cams with no problems tho? did i just happen to get the odd ball cam?

[3400-95-Modified]

May be an oddball cam, or that center bolt wasnt quite tight enough so it allowed it to chatter...

Think with me here, but with the engine rotating normally would that pinch tighten the center cam bolt if there was no pin, or would it loosen it... motor goes clockwise, so if the pin did spin when the cam gear tried to move it would have tightened up that bolts grab and thats why the car still "ran"

[loner666]

Makes sense..I rememeber torqueing that bolt..more reason to believe my torque wrench sucks..Time for a replacement just in case

[FiredUpZ28]

I dont think the springs were strong enough. To withstand a turbo, cammed 3.4? Stock LS6 is like..... .550 inch limit or so. and thats without any forced induction. Bend rods are usually from spinning the engine beyond the valvetrains limit and a valve floats and SMACK. Of course, you could have stretched a timing chain or broke a tooth, those theories are feasable.

[loner666]

need a new cam..the little pin broke off..

^that plus the fact the engine still has room for RPMs..i have them low still till i can start tuning properly

[SappySE107]

The springs are plenty stiff for boost on a stock cam and haven't floated valves or broken the cam alignment pin on the other motors.

[loner666]

The springs are plenty stiff for boost on a stock cam and haven't floated valves or broken the cam alignment pin on the other motors.

thats exactly why im confused..im guess i got that one oddball for something wasnt right when i put it back together not sure..this time ill be 100% sure that everything is right

[loner666]

New cam is here and installed..if everything goes as planned the car will be running by Monday afternoon

[loner666]

almost done..having coolant sensor issues and my exhaust studs wont come out of the old heads so i gotta figure out both of those then its ready to do

[3400-95-Modified]

3500 differences thread there is a part number for an adapter to use the stock sensor in one of the holes on the heads of a 3500.