So I read up and see that some here using a split ratio rocker for Vortec heads. What is the general consensus for RHS's ProTorker heads?

If they're not ported, then use the 1.6:1 for the exhaust, same as with GM 906 & 062 heads.

So I read up and see that some here using a split ratio rocker for Vortec heads. What is the general consensus for RHS's ProTorker heads?
OR use a cam with a larger exhaust lobe.

Or, better yet, both.

I have a mild Crane cam with equal exhaust and intake lobes. I don't think the RHS Pro Torker's exhaust is ported, just their standard bowl blending and multi-angle valve job. I think I'll get Scorpion 1.7 exhaust/1.65 intake RRs. Thanks guys.

Don't be surprised when you don't gain any power.
Those exhaust ports aren't any better than the average home-ported exhaust ports in any old production head. The roller rockers might be worth something, but with that much ratio, you could end up with spring surge and collapsed lifters. Not permanently collapsed, but momentary-collapse. Hurts power. So does spring surge.
Try a dual-pattern cam and 1.5:1 / 1.6:1 rockers. The cam need at least 8 degrees extra, at 0.050", for the exhaust, and preferably 12 degrees, though 14 wouldn't be bad.
Springs, I'd run Comp 982s inverted with Vortec retainers, so you couldn't get surge. Even better than more-costly beehives.

Well I really don't want to have to buy a new cam when I have a brand new one waiting to go in when the Pro Torker heads come in with the Trick Flow 422lb/in springs and titanium retainers installed. This is what I have: http://www.summitracing.com/parts/CRN-100052/

Way too much spring, even for a mild solid roller. Twisting 6500 with 2.02" valves and 1.6:1 rockers only takes 300 pounds at max lift, any more than that, you're risking that power-stealing momentary collapse of hydraulic lifters, whether roller or not.
Research before ordering, so you don't get into this mess.

Originally I had 300 lb/in Manley springs ordered that actually fit even a little better with the retainers, but Summit didn't have any more in stock and the tech rep I talked to there said these would only be negligibly too much with the 1.65 RRs. :mad: I shoulda just waited it out.

So basically I should just get a new cam with longer duration on the exhaust and that will pair with the valve springs better and get rid of my current new cam?

Bump. Right? Anyone?

You want all your vale train to work together......not against one another.
Titanium retainers and 422 lb springs don't belong in the same sentence with old Crane cam. Do yourself a favor and call one of the better cam co's(I prefer Crower) Tell them what you have ,tell them your wants and then Listen. Jacking around with rockers to compensate for this or that isn't going to get you where you want to go.

So it goes without saying that I don't want to leave anything on the table, but I still want to be able to use my power brakes for street/strip. I'm thinking either the Lunati 60102LK Voodoo cam with 1.5 RRs
Stats:
Duration at 050 inch Lift 219 int./227 exh.
Advertised Duration 262 int./268 exh.
Valve Lift with Factory Rocker Arm Ratio 0.468 int./0.489 exh.

...or a Comp Cams Extreme Energy CL12-238-2 with 1.5 int/1.6 exh RRs
Stats:
Duration at 050 inch Lift 218 int./224 exh.
Advertised Duration 262 int./270 exh.
Valve Lift with Factory Rocker Arm Ratio 0.462 int./0.469 exh

What do you guys think? This will be used on my 350 w/RHS ProTorker 170cc/64cc 2.02/1.60" valve heads and .016 compressed thickness head gaskets, RPM Air gap intake,Street Avenger 670, and low geared rear end and transmission that came with the car that my trans guy said was definitely set up for drag racing, but it doesn't feel like the stall is very much higher than stock, if any.

nothing? Really?

I ran a Comp hyd roller 218/224 in my '73 when it had the TH350 and the power brakes worked fine. She made around 14" vacuum at 850rpm.

I think your convertor is gonna dictate a short duration cam - if its close to stock I'd stay at or below 218/224 @ .050 to keep the power down low off idle.

Ok well I'm gonna go ahead and get the Lunati cam. Do you think I could get away with 1.55 RRs?

Ok well I'm gonna go ahead and get the Lunati cam. Do you think I could get away with 1.55 RRs?

Nobody?

Do you have roller rockers currently? If you have the 1.5 rollers I'd just run them myself because I'm cheap. Plenty of people run the split ration 1.5/1.6. I have never tried it I've just purchased cams with the longer duration on exhaust. 1.6 was recommended for the exhaust on those heads earlier. bump for ya.

No I don't have any RRs now, and because I'm cheap I don't want to regret buying just 1.5s now. :)

Do yourself a favor and call Lunati..........see what they say about running a different ratio rocker on a cam that they designed. Takes all the secon-guessing out of the conversation.

Do yourself a favor and call Lunati..........see what they say about running a different ratio rocker on a cam that they designed. Takes all the secon-guessing out of the conversation.
Good idea, I should have thout of that.