i just got my cc305, and my springs that comp recommended to use with it, anyone know what kind of rockers i should get? i really dont know what kind i can and cannot get, I'd kind of like to stick with comp since all the parts im getting for the heads are comp, thanks alot , 1.6 or 1.7

 

comp pro magnum 1.6

 

k im looking at the ones from pro magnum, they have different stud sizes , which do i get? my heads are from 97 lt1.

 

Will not replace rail rockers on late model heads with centerbolt valve covers


whats this mean? this is what it says in technical -- for description of pro magnum 1.6's =/

 

7/16 stud, non self-aligning Pro-Mag's with GM guide plates...

That technical point was most likely made because of the ratio change from stock rockers, 1.52, to these aftermarket rockers, 1.6. They're probably not advising you use these on stock springs, which you shouldn't...at least for long periods of time unless you're keeping revs low and not getting on it too bad...

 

oh ok, thanks, no i got my new comp springs in today

 

What comp springs?

 

Those would be the stoutest solution, but you would have to buy and install new studs and add the guideplates. (not that expensive or hard to do).

You could buy self aligning for 3/8 studs (which the stock studs are) and you would have nothing else to install or buy.

 

.836 in. I.D., 410 lb. spring rate, single, Ovate valve spring set
* Single spring, no damper
* Inside diameter: .836 in.
* Seat load: 105 lbs. at 1.700 in.
* Open load: 310 lbs. at 1.200 in.
* Coil bind: 1.150 in.
* Rate: 410 lbs.

part # CCA-983-16

 

yea i dont want to have to change anything to be honest.. so what can i get ? i order from summit mainly.. so ill take a look there, i get 3/8 then ?

 

these the ones i want ?
http://store.summitracing.com/partde...57#largerimage

non self aligning, 3/8, 1.6 pro mags

 

You'd probably be fine with a set of GMPP/LT4 aluminum 1.6 self-aligning rockers...and theyre a lot cheaper than you'd find the steel rockers for...and just buy a set of 7/16 studs for good measure...or you could ascertain the stock studs and you'd probably be fine with the lift provided by that cam...

 

well, if its cheap, and all it is , is replacing studs , then i'll replace them, i dont know where to get them from, but i think summit might carry them... what else has to be changed? and what is wrong with stock (3/8?) studs? Just curious.. also --- u got a link to any ordering info on those lt4 gm rockers? sounds interesting... any feed back anyone ?

 

ok i think i found the right studs for my application if i go with the pro mags

http://store.summitracing.com/partde...CA%2D4503%2D16


7/16 and are from comp


edit : ooo maybe not--- they say ford in the description doh

 

Those are NSA. You would have to get guideplates and make sure you had hardened pushrods(forgot to mention that earlier) to use them.

If you want straight swap-in, you want:
CC-1318-16 Comp Cams Pro Magnum 1.6 Ratio Rocker Arms
3/8" stud, self aligning
...and those would be cheaper at Combination Motorsports.