SeanTimothy

i was thinking about those crane self aligning, but they look wide as all hell, not sure they fit, so im asking ....what all roller rockers fit on the rock heads with the press in studs (mine are pinned)

ede

any rocker for a SBC will fit as long as they're made for the 3/8 stud

SeanTimothy

ok i was wondering, cause some look alot wider than other i.e. the yellow crane ones. didnt wanna get something i cant use ya know.... so width shouldnt be an issue? i heard you need taller valve covers due to the lifters sitting higher, possible smacking the valve cover or something....

what should i run with these...1.5...1.6?

Insomniac92z28

I know some rockers will interfere with your valve cover supports. It is not a big deal to modify the valve covers to work though. I had to cut valve covers to run comp pro magnums because they are wider. I used tin snips to cut the supports and they don't leak so I don't think you should have any trouble with yours.

If you go with 1.6s you might have clearance issues with your pushrods, where they pass through the head. I would stay with 1.5 or 1.52 ratio to avoid this.
Good luck,
Charlie

SeanTimothy

i dont have valve cover suports....i hae 86 style heads ...only thing i worry about is the area where the pcv valve goes into, that part has that ledge or whatever

SeanTimothy

ok what rockers will fit on the stock studs....im no tsure if these have to use screw in studs or not so someone take a look and tell me if they appear to me able to use the pressed in studs

Small Block Chevy 1.5/1.6 3/8- 7/16" stud

and thats where im confused....does that mean both sizes are available or....does it have to use a 7/16 nut or....what

heres a pic

ede

what i already said

SeanTimothy

yeah, sorry , its just the info isnt very uh, informative on these lifters and i wanna make sure they work before i buy em. do they appear as thought they will??

Insomniac92z28

You have 3/8 studs, but you will need to run self aligning rockers to keep the roller on the valve tip since you don't have screw in studs and guideplates. Those don't look like self aligning rockers to me from your pics.

Those aren't lifters either, they are rockers.

RB83L69

416s have narrow slots for the push rods, unless someone has altered them. If they do, DO NOT use self-aligning rockers.

Insomniac92z28

Really,
Ok news to me. I know my (083) L98 heads use self aligning rockers.(stock ones are self aligning) I just assumed these were the same. I wouldn't think you would want a pushrod rubbing on the cast iron head, but I don't know for sure

RB83L69

For the fist couple of years of SBC production, "rubbing on cast iron" was how the guide system worked. It must not have worked very well though, because they only left it like that from 55 to 86.

"Assuming" things like that is how people build motors that blow up in their first hundred miles, and keep doing it over and over again no less, and then have the cheek to pretend that they know enough about building motors to answer other peoples' questions. Not that anyone on this board ever does anything like that though.

SeanTimothy

so ...first off , i said lifters, when i clearly ment rockers....was 5 am, no need to be like "haha those are rockers!"

so i should not use self aligning rocker arms? you lost me there somewhere.....i run those heads on my roller 305 ...id say L03 but its hardly a L03 anymore.

So are you saying if someone altered the narrowed rod passages..DONT use those rocker arms?

or ar eyou saying dont use them unless i alter the narrowed passages...

Insomniac92z28

Jeez OK I thought I was correct and you corrected me. Woop-T- freekin-do I bet you feel great. I have built a few myself and made a mistake. Fortunately we have a few people like you that know EVERYTHING but don't say anything until you have a chance to correct someone else.

Sorry for the misinfo Seantimothy.

Later,
Charlie

SeanTimothy

its all good, i have no clue what you were trying to say anyways....i have no idea wht the assumption was, im kinda in the dark there lol

arent the L03 rocker arms self aligning? i use them on my Lb9 heads because i have thrown a rocker arm off the valve somehow with the stock lb9 rocker arms. i figured the self aligning rocker arms kept them on the valves VIA those two outward humps that shroud the valve stem.

no idea why i threw a rocker arm off the side of the stem though....push rods were perfectly fine, valves were new, springs are good....Odd......oh well...

so should i NOT be using the L03 rocker arms on my 416's?

Momar

No, you do not want to use the LO3 rocker arms on the 416's. If you look at the holes where the pushrods go through the heads, the holes that they go through are slim. If you were to look at the L03 heads those holes are wider and look more like a circle than a slot. The 416's use the head to hold the rocker straight via the pushrods, while the L03 heads use the humps on the rockers you mentioned to keep them straight.

Ben

SSC

SeanTimothy

right....but some how ....my rocker arms are trying to ride on the valve stem Left of center....causing it to rub against the rocker arm stud and basically Saw into it.....

so why cant you use the L03 rockers? you just explained how they worked, you didnt really tell me why it doesnt work......and...i have been running the L03 roickers on the 416s for a month or so now....now i gotta rip em off....

i thought the lil humps on the l)3 rockers were added protection against the rocker arm wanting to walk off....i didnt see any angle differences between the 416 and the L03 rockers....i.e. where the push rod goes in the rocker....

sorry, im stupid, please explain why it is bad :O

SeanTimothy

so should i go with self aligning or non self aligning????

rustybluebird

There are more than enough posts on this subject for you to read and you should be able to come up with an answer.
How big of a spoon do you need?

SeanTimothy

well see i just heard two different things here...

"You have 3/8 studs, but you will need to run self aligning rockers to keep the roller on the valve tip since you don't have screw in studs and guideplates"


And


"416s have narrow slots for the push rods, unless someone has altered them. If they do, DO NOT use self-aligning rockers." <---i guess by this he ment dont use self aligning rockers if they havent slots havent been modified.


so i ask again, self aligning or not?

SSC

Ok so the Nod aint going to do it this time, oh well.


If for example someone modified the slots in the 416, (factory casting guide plates) either to accept larger diameter pushrods or allow correct geometry for larger ratio rockers, that would be an example when one would use either SA rockers or NSA rockers with aftermarket guide plates.

This is the answer you are looking for correct?

I'd personally suggest using NSA rockers and investing in a set of aftermarket guide plates to assure correct contact with the valve stem. This way you know for sure that the pushrods are in the correct posistion and the rockers will not walk around. If you go through all this troubkle and they still dont sit correctly someone FUBARD the studs and they should be taken out replaced and installed by a machine shop.

8Mike9

There's three/four ways to go.

Narrow slots...use non-SA rockers.

Large holes, use SA rockers or..machine heads for guideplates and use non-SA rockers w/guideplates

Open up the holes, machine the heads for guideplates and use non-SA rockers

I guess a fourth option would be if you had narrow slots, open them up, machine heads for guide plates and use non-SA rockers and guideplates too.

I believe I typed that right.

SeanTimothy

well i can open the lil push rod ports up myself, however , dont you have to use screw in studs for the guide plates? i think its something like 160 total for screw in studs to be installed.

i still dont understand why my rocker arms want to walk off the damn valve stem...even though the valve stems are perfectly flat...pushrods are straight as an arrow....the *stock* wanna be valve guides in the head are non modified. and i have no idea how the rocker arms can be installed Crooked. unless the stud holes were drilled crooked from the factory....its just too tight of a fit for the studs to go in 15 degrees left of center....

SSC

Sean it isnt a terribly expensive process. Guide plates from crane are only $25.00 Ive even seen them for less in Jegs. Screw in studs should be used anytime you use an aftermarket cam or better then stock springs. Ive even seen OEM studs pull out on factory untouched engines with peanut cams, rare but does happen. Studs run between $22.00 for 3/8'' and $30.00 for 7/16". So for around $50.00 you have all the parts needed. You could probably take the OEM studs out yourself even install the new ones if you have the tools. I'd suggest getting some prices from local machine shops and go from there.

SeanTimothy

these studs arent pulling out...they are pinned with a 1/8 roll pin.....and , this is just me, but i reccomend against tapping the stud holes yourself. its real easy to get the tap in a LITTLE bit left or right of center, then you are pretty much screwed. like i said, its just me, and my opinion. i have tapped alot of cast iron and aluminum parts in my day, and i still wont touch the studs with a tap.