I dont know how I did it but I messed up big time. I just did a cam install and got everything buttoned back together. The car wouldnt start and turns out I was sent the wrong cam gear(sent the 95-97) so ofcourse, the cam wasnt turning the opti. My bad for not inspecting everything before the install. Took it back apart, replaced the cam gear, put it back together in time and she fired...for about 20 seconds. She wasnt running right and cut off. I took it back apart and found not some but ALL of my pushrods are either broken or bent. Not one single one is straight. I used shoebox's page to set the lash on the valves. I am using Comp R lifters so I only turned it 1/8-1/4 past. I was also able to turn the motor with a ratchet on the crank bolt when torquing it down. What did I do wrong? Did I set the lash to tight? Would that break my pushrods which are hardened in 93(at least thats what I was told)? I did the install by the book and took everyones advice and tips to make everything easy. Any help would be greatly appreciated and thanks in advance.

Bo

 

What cam and springs did you use?

 

The cam is the cc305 and Im using ISKY springs rated to a 550 lift-dont know part number. Im also usinig 1.6 ProMags but I dont think that has anything to do with it.

 

305 lift with 1.5 =.510 .With 1.6 =.540.Way to close.You need better springs.

 

I bought the cam and springs from a friend on the board(93ZM6Tally) who ran these on his car for 10k miles making good power with absolutley no problems. He used the springs on the stock heads and ported those heads still using thos springs. Could that really be the problem???

 

The hotcam is .525 with 1.6s. The 305 is .510 with 1.5s and .544 with 1.6s. That could still be his problem though.......i don't know.

 

I'm way too slow today If they are rated to .55 then i would think he should be ok because isky has some play factored in there. I do agree that i would have gone with a spring that could handle more though.

Your sure that its degreed right?

 

OK,Its too close for comfort.Did he use 1.5's?

 

Bo,

I am so sorry to hear all this. I can understand and feel for you. We sure did miss you last week, and wish there was something I could do to help you.

 

Nope they were installed with CC 1.6 RR's. The springs and cam were part of a kit, I believe it was a GP, from Thunder Racing. Not 100% sure of spring specs, I was going by what Thunder Racing has available on their site now. At any rate I ran fine with those springs and in fact pulled 360RWHP STD with them using stock castings that were locally ported and polished.

 

Damn that sucks

 

Well,all I can suggest is to get new pushrods and check the clearance between coils at max lift.It should be at least .020''.****CORRECTION .060'' between coils.****

 

Does anyone have any idea what the installed spring heighth should be with these. That was never checked. They were installed with std locks and called good.

 

Bo

Just checked looks like 1.750 installed height. Check that with the dial calipers.

Mark

 

Installed height=1.750 on the nose