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By Oldmics - 9 Years Ago
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Looking for a set of rockers. I think Dove is still making them in the 1.6 ratio.
Any other manufactors and ratios out there now?
Considering using something like a 1.7 only on the exhaust of the early Isky E2 cam profile.
Oldmics
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By charliemccraney - 9 Years Ago
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Harland Sharp and Rocker Arms Unlimited.
I had nothing but trouble with Dove - adjuster screws wearing, rocker arms breaking. I've changed to Harland Sharp and the problems seem to be solved. The Harland Sharp rockers look like they are much higher quality and they come with a higher price.
I'm not generally hard on my engine, unless I'm racing, and that is maybe 1% of the use with the rest being low rev'ing drive-like-grandma street use.
I have no experience with Rocker Arms Unlimited. They make the 1.7 rockers for the Mummert heads, if I'm not mistaken.
I don't think 1.7 is possible on an oem head. The Mummert heads are designed in a way that they can work. However, you can use different length pushrods, which changes the adjuster screw position and therefore the rocker ratio. You can only go so far doing it this way.
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By PF Arcand - 9 Years Ago
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Check Mummert's site for valve train info..
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By 30 coupe - 9 Years Ago
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I bought a set of Harlan and Sharps, got them from Ted Eaton. I have not finished the eng. yet so can't comment much on them, but I will say I am impressed with the way they are built and look. tried to buy them direct from Harlan and sharps, but was told that Ted Eaton was their distributor for the Y-block applications and to contact him. hope this helps
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By slumlord444 - 9 Years Ago
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I got my Harlan and Sharps from Ted also. The spacing is slightly different on the Mummert heads and the Ford heads so you need to tell him which you have when ordering. Only had mine running for a little while but no issues so far. I am really impressed with the quality of them. Locking adjustment nuts should stay put. You need to make sure you hold the locking nut securely when you tighten them down so they don't end up with tighter clearance than you want.
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By Ted - 9 Years Ago
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Eaton Balancing does keep the Harland Sharp 1.6:1 roller rocker assemblies in stock. Because of valve spacing differences, aluminum heads and iron heads do require different sets. All HS rockers come preassembled on new Schumann ‘Nascar spec’ rocker shafts thus making them ready to install out of the box. For the aluminum heads, the customer must provide the aluminum stands that are supplied with the heads. For iron heads, the rocker assemblies can be supplied with either refurbished factory stands or new billet stands. Aftermarket pushrods with a true 3/8” sized diameter cup at their tops are recommended for use with these rockers. Simply contact Eaton Balancing for current pricing.
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By Rono - 9 Years Ago
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Years ago I bought a set from Rocker Arm Specialists and haven't had any trouble with them at all. I think they are somewhere in California now, but haven't seen any advertising from them in a long time.
Rono
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By brokengate - 9 Years Ago
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Rono, Rocker Arm Specialists is Rocker Arms Unlimited here in Redding, CA. I had spoken to them prior to selling the Mummert aluminum heads, but I haven't done business with them. There's more to it, if I remember right the employees bought out the owner and moved to the Redding location.
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By Richard - 9 Years Ago
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RE: Dove Rockers
I have a set on my 312 but very low milage. No problems. Are there more failures out there
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By Richard - 9 Years Ago
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RE: Dove Rockers. Know that I am spooked. Anyone have any success with these.
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By Ted - 9 Years Ago
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I have had success with the early production Dove rockers. I eventually had to stop using them due to too many manufacturing variances in them. A bad batch of improperly heat treated adjuster screws simply added to the problems. As I was a dealer for them back in the day, I still have an inventory of them but no longer sell them outright. This old inventory simply takes care of any come backs that might occur on engines previously built in this shop using them.
Keep in mind that any aluminum rocker arm is going to be sensitive to oil pressure losses at the heads. Even the Harland Sharp rockers with the bronze bushings are prone to accelerated wear when the oil to the top end becomes minimal. I’ll recommend that any roller tipped rockers on the Y should have the shafts pressurized with the overflow tubes being pinched off or removed altogether.
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By Richard - 9 Years Ago
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Thanks Ted
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By LordMrFord - 9 Years Ago
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Richard (11/28/2016)
RE: Dove Rockers. Know that I am spooked. Anyone have any success with these.
I think dragster got those.
After chancing the stock adjusting screws, there havent been any problems.
Overflow tubes are blocked.
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By Richard - 9 Years Ago
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Sounds good. Thought about helicoiling the adjuster screws if thing get wiggly
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