Stamped small block 1.6 rockers

[jjg73]

Do/did they still make them and available anywhere?

 

[rumblefish360]

No. Magnum heads use a 1.6 rocker.
1.6 rockers for LA heads are roller rocker only.
They can be found cheaply. (Not that I would go there.)
Crane has the only iron (Ductile) rockers day know of @ 1.5 ratio.

 

[jjg73]

Ok thanks! I may have to go that route even though I didn't want to!

 

[rumblefish360]

Well, once you grab your roller rockers of your choice, do yourself a favor and contact Mike @ B3 Racing.
Well well worth it to do so.

 

[jjg73]

Any good sets under $300???

 

[rumblefish360]

Any good sets under $300???

Why ask me when you can go shop at Summit Racing and use there search bar in the left of the page. Easy to use!!!!!

 

[wyrmrider]

cheap roller rockers and b3 kit
call b3 and ask him
me-iron rockers
most can get all they need from a good cam

 

[jjg73]

Why ask me when you can go shop at Summit Racing and use there search bar in the left of the page. Easy to use!!!!!

Agreed, but wasnt sure what was a pair Worth having.

 

[toolmanmike]

Speedmaster aren't bad rockers.

 

[jjg73]

Thanks everyone for the input! Also... I accidentally ordered W2 head bolts... 144-3602 are what I need, I got 144-3601. Are most of them interchangeable? The ones I had on them before were Mopar performance bolts put on (P41204471). Ok to reuse those? They were special order and I don't believe returns are accepted so don't want to waste them!

 

[wyrmrider]

reuse your headbolts
what did B3 say?
forget roller tip rockers if you are not going to correct the geometry

 

[jjg73]

reuse your headbolts
what did B3 say?
forget roller tip rockers if you are not going to correct the geometry

Gotcha. I do remember the Engine Masters episode where Dulcich redrilled the pushrod locations, this type of treatment is what you are referring to correct?

 

[rumblefish360]

No, he is talking about moving the rocker shafts (on the stands or not) in or out, up or down in order to obtain the correct geometry.

What Dulcich did is relocate the pushrod holes wider in order to open up the intake port to its maximum width.

 

[jjg73]

No, he is talking about moving the rocker shafts (on the stands or not) in or out, up or down in order to obtain the correct geometry.

What Dulcich did is relocate the pushrod holes wider in order to open up the intake port to its maximum width.

Got it, thanks for the clarification!!!

 

[jjg73]

So... My last question would be... Would a set of 1.5 stamped rockers by Mancini be more consistent than my Mopar performance rockers from the 90's? My guess is quite obvious but would love to hear the feedback!

 

[wyrmrider]

Who knows
Mancini does not mfg rockers and where he gets them and who even makes them now?
stock rockers are usually a little short- down near 1.4
we used to get a bunch and hand select to try and get 1.5
I do not remember anyone actually specifying a "blueprint" guaranteed 1.5 rocker
AND
the rocker is only 1.5 where it is perpendicular to the valve stem
when it is tipped up or down it is progressively less than 1.5
let me know what you find
I have to be 30 years out of date on stock rockers

 

[rumblefish360]

So... My last question would be... Would a set of 1.5 stamped rockers by Mancini be more consistent than my Mopar performance rockers from the 90's? My guess is quite obvious but would love to hear the feedback!

No

To honestly upgrade your LA rockers require a roller rocker and a talk with B3 (member) about his rocker geometry kits to get it all right and all there worth.

You could contact him and ask him what roller rocker would be best to use on your head and then get the rockers and then get his kit. Once you get that squared away, you’ll have the best, most accurate working valve train possible.

 

[jjg73]

Rumblefish, is his website www.b3racingengines.com? I see this name on this thread and in others too, so that's the route I may take!

 

[wyrmrider]

that's it
go to tech and read all four papers
report back
cheeers

 

[rumblefish360]

Rumblefish, is his website www.b3racingengines.com? I see this name on this thread and in others too, so that's the route I may take!

Bingo, that’s the guy, just what Wyrmrider said.
This fella will help you get going full steam and straight away.
Once you leave OE parts, this fella gets the aftermarket set up right. The after market (in most cases) just engineer a rocker arm that kind of fits. Probably workable, but generally not that great despite how popular they are, how strong they are, ETC...

Some of the top line valve trains from places like Crower or TD are really super nice BUT also need some type of adjustment.

It is the variations in and out and all over the engine as well as the cam itself. This requires the rocker arms to be moved around and adjusted. Up, down, left, right, back and forth. The more modified the engine block, cylinder heads are just add to it all.

This has been since engines were first made. The further outside of stock you go the worse it gets.