what springs do i need with the cc305 and 1.6 rockers. also, do i need retainers too?

 

ttt

 

You need retainers and locks. Maybe shims and seats if you have some springs. E-mail me and I can hook you up with what you need.

Bret

 

Like Bret said, you will need springs, retainers, locks, and seats. Crane makes a kit (p/n 10358) that includes 1.46" diameter springs (99893), retainers, locks, and seats. I would recommend against using the seats that come in the kit, since they are flimsy and do not locate the spring in the pocket. Comp makes a seat (4770-16) that does a much better job.

The Crane springs are good for .600".

 

thanks guys

 

So the Crane's would be a good setup if the shims are not used?

Does any additional work need to be done to get the springs to work with those seats?

I am getting ready to buy some valve springs and haven't been able to decide which ones to get yet. But I don't want to machine the head to get them to work.

 

yeah...i was wondering that too

 

the crane kit is nice but those springs are kind of heavy for a rr only engine. the parts bret will sell you are probably a much better match and will be better suited for the job. every time i've dealt with him he always picks the best setup for the money when required. what he'll sell you will be the best lightest wieght parts for the money. as poorly understood as valvesprings are in general i have to say go to a pro for your parts its all they do every day.

 

They will fit in oem LT1 heads. As mentioned above, the Crane .015" seat shims that come with the kit are kinda whimpy. But if you use a .060" thick seat locator (and most are about that thick) you will be adding considerable seat spring pressure. These are good springs and are rated at about 400lbs an inch. So just be mindful of that.

I have this combo.