Jpack

iTrader: (12)

I have searched without a definitive answer. If I were to install a cam, for example LT4 hotcam, and use the unvented Opti, what all is needed to do the swap. I understand that I can't switch to a double roller timing set with this configuration. Also the pin from what I have read is longer on the cam. I don't want to convert to the vented opti. Although it may be the best option to do so, I really don't want to go that route since I have recently changed the opti. Also, what timing sets will work for this application. Thanks in advance.

WhyHelloOfficer

iTrader: (5)

Unfortunately the timing set selections for the non-vented opti cars is limited. If all you are doing is the hot cam kit swap, you should be fine with just swapping in a new OE timing set. When I did my cam swap over a year ago, there was one timing set that they sold at summit, but it was backordered at the time. The tech line at summit is a HUGE help -- give them a ring sometime.

To do a cam swap, you're going to need all the essential gaskets that will need replacing when you take the car apart (somewhat) and are putting it back together. Thunder Racing sells a 'cam swap gasket kit' which had all the gaskets I needed to do the cam swap.

Besides the gaskets, I'd say you're going to need some quality high temp RTV Sealant (preferably black) and a little bit of patience to get it done. There have been a couple recent threads in the LT1 forum alone where people asked what they needed prior to their cam swap. Definately take a look for those.

Jpack

iTrader: (12)

Yeah I have seen those but the issue I have is the hole in the center of the cam. They are different between the two different type of optisparks. They are driven different. Everywhere I have searched yields nothing specific for the 94 lt1. Everything listed as far as parts is 92-03 and 95-97, skips right over the 94. With that said, looking online @ summit shows the cams compatible from 93-97 yet the 93 and 94 are different than 95-97 from what I have seen on the optispark/cam sprocket/timing chain options.

alconk

iTrader: (1)

These are good questions! I'd also like to know.

sssalah

All that needs to be done is to cut the dowel pin down to the same size of your original. Not a big deal, I've shortened one using a bench grinder.

WS Sick

Yep , just trim the dowl to fit the 92-94 set-up. use the 92-94 timing set.


Don't forget valvesprings.

porksoda

iTrader: (39)

I just did a cam swap this past weekend on my 94 LT1 and I used a cc503 and just shortened the dowel pin with a grinder. Just match it the stock cam when you pull it out. I also used a Lunati timing set and the chain was very tight! Unfortunately for us we have 3 choices when it comes to timing sets. AC Delco, Lunati, and the Comp cam set for like $500! If your interested I have a couple timing sets for sale because Autozone accidently gave me 3 timing sets so now I have 2 extra.

Jpack

iTrader: (12)

Thanks for the info! anyone have the dimension for the dowel pin so I can mic the new one?

matt94z

iTrader: (49)

You can also press the dowel in.

matt94z

iTrader: (49)

Here's some more info you might need http://shbox.com/ci/cam_install.html