Cascade Crew

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

I would like to swap my 882 heads for these pro topline heads. I need to know the simplistic way and what parts I will need to collect. I have done head gaskets before so I am halfway capable, but after reading gabes thread I was scared. I don't really need to go into as deep as he did I assume. I do need pushrods and rockers. How do I determine which ones and what else do I need. I am wanting to collect parts and then do swap half way soon. [/quote]

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

So I have done as muxh reading as I can so now its time to get hands dirty. But what I woukd like to know is can I do everything minus the push rods and rixker arms and torque it all to spec. That way after I figure out pushrod lenths I can drop them in, put on rocker arms and go. Also as I look at rocker arms I see roller tips. Are those something I can use in my application or not?

Twilightoptics · Posted: Mon May 14, 2012 8:42 am Post subject:

Heads need to be on and torque, and rockers need to be on before you can measure for pushrod length. You don't torque rocker arms either, they are individually adjusted.

Roller tip rockers do nothing. Don't waste money on them, but full roller rockers if you upgrade.

Make sure your rockers clear the valve spring. Stock rockers wouldn't work at all on my pro heads. IIRC they were like a 1.4" diameter spring. Stock rockers are made to work on 1.25" springs.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Thanks. Also another qurstion is that I see 1.5 and 1.6 rockers. Can I you either and if so which would be prefered. Basically after I get parts I can get it all the way untill tocker adjustment and then I will probably have someone come over for that or I shall learn to do it. myself.

91RSVert · Posted: Mon May 14, 2012 12:19 pm Post subject:

Rockers will depend on cam n heads. The heads have a "suggested lift" and max lift. You need to find that out, calculate cam+rocker lift to see if 1.6's will clear, or stay with 1.5's.

Also look at if you plan to swap cams later, which would work then. Nothing sucks more than spending 300 for so rockers, so that in 6mo-1year they are no longer good.

chevymad · Posted: Mon May 14, 2012 4:51 pm Post subject:

An older style cam may like the 1.6s. But many modern cams have extreme ramps and plenty of lift built in allready. I'm using a lunati voodoo cam with 1.6s .. and wish I'd actually bought 1.5s at this point. Too much lift for the small diameter springs to be dependable really. And they operate so quickly on the fast ramps that I think it may be collapsing the hydro lifters and causing noise issues. If I was running something old like an old crane or a summit grind the 1.6s would be great though.

Twilightoptics · Posted: Mon May 14, 2012 5:15 pm Post subject:

Never had a problem with the XE262 cam and 1.6rockers with 1.25" springs. Just the springs matched for the cam were too much for the head studs. Needed screw in studs.

Also you cannot use self aligning rockers if you have guideplates.

Stick with 1.5. You just wont see the gain anywhere, so use the smaller to be safe.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Ok. Well I am getting close to tearing. Motor apart. So few questions. How do I tell how much lift the springs on my heads have? And what would be some decent cams for thmy setup. I don't daily drive, but I also don't want it. To rumble and scramble my brains. I am excited. First head swap.

chevymad · Posted: Sat Jun 09, 2012 9:55 am Post subject:

Doesnt matter what your springs are. You need to buy springs that match your camshaft.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

I kindof thought that. So do cam kits come with them? And should. I quay the. Till I get them before I bring heads to machine shop and have them I stall them?

Alphius · Posted: Sat Jun 09, 2012 9:59 am Post subject:

As far as cheap and good value, Summit cams are hard to beat. They are very cheap, and despite being an old grind still make decent power. Mine is the K1103 and has continually put down some impressive numbers in combination with the rest of my setup.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

How was the sound. I would like it to sound a wee bit bigger then she js

Twilightoptics · Posted: Sat Jun 09, 2012 11:26 am Post subject:

Hard to say what it will sound like. What you have in there now, etc and exhaust have a huge effect on sound.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

It sounds pretty decent now. Won't know what's In it till I pull it. I know they make some for sound, but heard they sacrifice in performance.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Holy smokes. I,have been reading about how to choose a proper cam, and ya. Alot to take in . Then the springs. Roxker arms. Pushrods. The whole upper valve train. I saw a guy selling nascar aprings, which from what I read raise rpms. But needs roller cam. Is it viable? Worth it? Or do I have to change alot of other stuff. ? I have been on a site called enfine builder mag or something. Alot of info to take in.

chevymad · Posted: Sun Jun 10, 2012 11:42 am Post subject:

Just figure out which cam you want. Then the cam company will either recommend a spring for it or give you specs that the cam requires. Too much spring and you have problems.. too little and you have problems.. Thus you need to follow their recommendations.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

I am going to call. I know I need head specs and rear and exhaust for them. What other info do they need?

DBL_TKE · Posted: Mon Jun 11, 2012 5:18 am Post subject:

Pretty much your entire set up. Heads, intake, displacement, etc

aaron_sK · Posted: Mon Jun 11, 2012 8:02 am Post subject:

Compression, stall speed, vehicle weight, chamber size, valve sizes.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Well its only taken me a year to get this far. But I can say, I do understand alot more in a year.