Rocker help

[Malicious]

Hey guys,

just pulled out a set of spare heads I have and noticed that they have cast rockers with screw adjustment where the push rods meet. Got me thinking, so I popped the rocker covers off of my ready to go 440 and it has 'pressed' metal rockers with no adjustment.

Question is, are the rockers on my spare heads, better or a performance upgrade over the ones on my r-2-r 440?

Also the valve springs look pretty beefy, are they any better?

Pics below: Top is the spares bottom is my r2r 440.

View attachment 105895
View attachment 105896

Thanks in advance!

 

[Garys1969RR]

The adj rocker arms are made to use with a solid lifter cam. The stamped steel ones are more common and made for use with a hyd cam.

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What is the casting number on your spare heads?

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The early max wedge head engines came with adj rocker arms. They also use a different push rod.

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The early max wedge head engines came with adj rocker arms. They also use a different push rod.

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The early max wedge head engines came with adj rocker arms. They also use a different push rod.

 

[Malicious]

Last 4 digits on the numbers stamped under the runners are 516-3, definitely not max wedge! I really have no info about them at all, the heads them selfs look stock as a rock but it was the hardware that caught my eye...

 

[RustyRatRod]

Yeah them adjustable rockers are nice. Tell you what I would do with them. Those adjusters were kinda known for gettin loose and backin out over time. You can get good Crane adjusters to replace them. Also, if you plan on runin any spring pressure to speak of, having the shafts hard chromed, or replacing them with hard chromed shafts is a good idea. Lastly, you can have the rockers bushed where they slide onto shafts. Since Gary has taken Rocker Arm Services back over and relocated, I hear customer service is much better. Here is their new site.

http://www.rockerarms.com/

He can do all that to your stock rocker gear and make them VERY nice and able to withstand anything you throw at them.

 

[Malicious]

Thanks RustyRatRod,

Out of interest, whats all that going to cost? I'd planed on going roller rockers later down the track, once the car was on road. Would I just be doubling up on spending? or would these be good enough not to really need to go to rollers?

 

[RustyRatRod]

To me, it's arguable that roller rockers add any horsepower. Their main benefit, is reduced valve tip wear and reduced valve guide wear. Those ductile iron rockers can really take some abuse. Give Gary a shout and see. They aren't unreasonable.

Thanks RustyRatRod,

Out of interest, whats all that going to cost? I'd planed on going roller rockers later down the track, once the car was on road. Would I just be doubling up on spending? or would these be good enough not to really need to go to rollers?

 

[bm02tj]

the picture shows the oil hole up and should be down check before you start motor

Bruce

 

[68gtx]

the picture shows the oil hole up and should be down check before you start motor

Bruce

tell us how you can see that?

 

[RustyRatRod]

tell us how you can see that?

Look between the rocker arm in the second pic. The oil hole in the shaft is pointin up. Good eye, Bruce.

 

[68gtx]

oh crap! lol, good eye!!!

Look between the rocker arm in the second pic. The oil hole in the shaft is pointin up. Good eye, Bruce.

 

[Meep-Meep]

Those are the Crane iron adjustable rockers, not OEM MoPar, and they are good. The adjuster nuts pictured are not what was supplied by Crane and look to be the interference fit type from a slant 6 or 273. Get the 3/8-24 adjuster nuts with jam nut from Summit for about $50.00 and you are good to go. Pay attention to the ball diameter and get the pushrods to match. When all assembled you should end up with just a couple of threads sticking out past the rocker on the ball end of the adjuster. Oh, and neither of those springs are anything special - just OEM low pressure stuff.

 

[Malicious]

Sorry for the slow responses, been swamped at work.

Meep Meep, thanks for the heads up on the adjusters, If I have those, will I still need different push rods? If so what should I bee looking for?

Would these be any good with a roller cam and lifters?


BM02TJ- Bruce, awesome spot! The guy I brought the recent rebuild engine from re-assembled the heads before I picked it up, good thing I popped the rockers and posted a pic!! Got me worried I might need to check the rest of the engine now...

 

[RustyRatRod]

Yes, you will need different pushrods. The pushrods are different lengths for hyd, solid and roller. Also, they are different between high and low decks, so in essence, there are 6 different pushrod lengths so make SURE of the application. Of course you'll need to get the correct ends on the pushrods.....ball and ball, ball and cup, etc. Don't let it overwhelm you. Pick your damn rockers and cam and get back here we'll hook you up on which pushrods are right.

 

[Malicious]

Bit of a thread dig here, but I'm looking at putting these on in the next month or two. I'm going to order in the replacement adjuster tips and was looking at the geometry adjusters that B3RE make as well. So I was thinking I need to get an adjustable pushrod to check the length required.

Two questions:
1. What size adjustable push rod should I look at getting? Or is there a set size I could use? Here is my build:
Whiplash Cam: http://www.hughesengines.com/Index/...V2hpcGxhc2ggTXVzY2xlIENhciBjYW1z&partid=30173
Hughes lifters: http://www.hughesengines.com/Index/...c2VkIERlY2sp&level1=TGlmdGVycw==&partid=11032
New adjusters for the above rockers: https://www.summitracing.com/int/parts/crn-99780-16
Possibly run these geometry adjusters : http://board.moparts.org/ubbthreads/ubbthreads.php/ubb/showflat/Number/7923244/site_id/1#import
In a set of E-Street heads with mild port work.

2. I notice a few manufacturers make full sets of adjustable push rods... can you actually run adjustable push rods every day? Or is it just to check each rocker for precise measurements on each?

Thanks for any help you guys can offer.