From what I have read the comp true double roller was supposed to be plug and play for my 95 LT1. Well, its not. I got the crank gear on by heating it up and slipping it on. Then, I slid the custom Advanced Inductions cam into the block, installed the cam retainer, then bolted up the cam gear. After its tightened down it wont budge. It looks like it bottoms out onto the cam retainer. Plus, after it is sinched down tight the cam gear still sticks out by almost an eighth inch. So, the chain would not even be closed to lining up. Is this not plug and play? I thought the only things required was an electric waterpump and clearance the timing cover... Any help would be greatly appreciated. Im at the shop right now wondering what to do.

I called Advanced Inductions already, and they have never had anyone call back and say they have had problems like this, and I cant find anything here saying they have had problems with it. So~I hate being the first person to experience this crap, it only delays my motor from burning gas! LOL.

Thanks for your help!
~Cody

 

First things first, do you have the crank sprocket bottomed out to the tapered edge of the crank? If not, go do that first.

Second, without the chain attached the cam will still slide in and out of the journals a bit I believe. If you pull "out" a bit will it clear the retainer?

I installed a comp double roller in a buddy's car recently, worked without a hitch.

 

yuup, the crank gear is all the way tight. What I meant was the crank gear sits in farther than the cam gear. The cam has play in it without the gear on it, back and forth. As soon as I get the gear on ALL play is gone, and the cam wont turn. Maybe the cam wasn't ground back far enough then? Ron at AI said he has never had that problem, but its the only thing I can think of...

 

but if the cam wasnt ground back far enough, that would still leave the cam gear out too far. In order to get the cam gear to sit back farther the cam retainer would have to be thinner, or the back of the gear turned down maybe??

 

grr im gonna be pissed if I have to wait for a new damn timing set!

 

I doubt it's the cam... most likely a defective timing set it looks like.. or as mentioned, wrong cam gear in the box.

 

im goin to check it with the LT4 timing set I was runnin, Ill post up in a minute.

 

Pics?

Dumb question, cause you already pulled the cam out, but is the spider gear in the back of the intake out?

 

What model # tru roller?. There are more than one.

 

I bolted up the old LT4 timing gear I had laying around. When it is tightened down the cam spins freely. However, there is NO back and forth movement, but there is also no binding as it does seem to spin freely. So, this would lead me to believe the timing gear is wrong... I cant get the new crank gear off and the LT4 one bolted up very easily so I can't check alignment, but just doing this leads me to believe that the new comp gear is wrong...

I do not have the back gear for the oil pump drive bolted in.

the part number is 3136 on the box.
3100B is etched into the bottom crank gear, and 3150A is stamped into the top cam gear.

 

What was the part# on the timing chain set.Make sure it was for an 87-up block for roller cams.If you have an early timing chain set made for blocks that dont use the retainer plate,theres your problem.The later cam gears are counter sunk for use with the retainer plates and machining on the first cam journal

 

That's probably your problem.

 

I posted up the part number, anyone know if the 3150A part number stamped in the cam gear is the old style maybe???

 

well what is the correct LT1 part number?? Advanced Inductions said this was the one I needed! (3136)

 

Why not just call Comp Cams and ask them? 800-999-0853