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02:32:25 - 12/29/2024
Dakota Performance
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.boB
Dodge Dakota
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3/15/2005
21:55:55
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 Subject: Rocker Arm Conversion
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Message:
I'd like to change my stock 1.6 rocker arms to 1.7 rollers in my '01 5.9, both for the slight performance increase and becaue it will give me something to do. Of course, cost of the project is always an issue.
Now, I'm cruisng through the Crane catalog, and I notice a couple of similarities. Both the Magnum and the SBF both have pedestal mount rocker arms. Also, both engines use the same stud conversion kit. With the kit, both engines can use the same Energizer rocker arms, and the same push rods. But, the energizer rocker arms are available in 1.6 ratio only for this application. But I'm sure with the conversion kit you could use any SBF part.
Now, in further research through the catalog, I notice a Crane PN 44746-16 for a SBF, available from Jegs for $200. The is is listed as a 1.7 ratio, pedestal mount, with stands, rails, and shim kit.
Then, I perused the Jegs catalog for roller type rocker arms, 1.7 ratio for a pedestal mount SBF. I found PN 778-66878 from Pro-Form. This is apparently a bolt on application with a needle bearing fulcrum, for $165.
Another advantage is that the pedestal mounts are self aligning, and don't need guide plates. Therefore, they don't need hardened push rods.
However, I would expect to need taller valve covers to clear some of these bigger rocker arms. Do the Harland Sharps fit under the stock covers?
I'm wondering, is there any reason that these Ford parts won't fit on a magnum?
Sure, the Harland Sharp rockers are much better. And if I was racing this truck, I'd spend the $500 and buy them. But this is a street truck, and the stock rocker arms will last longer than the rest of the truck. So I really don't need racing parts, especially when it's $300+ more.
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gen1dak
Dodge Dakota
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3/16/2005
19:43:53
| RE: Rocker Arm Conversion
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Not sure about the SBFord, but the SBChevy rockers will work......as much as I hate to believe it. But, that can mean lower prices.
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.boB
Dodge Dakota
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3/16/2005
22:22:42
| RE: Rocker Arm Conversion
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Do you mean a SBC pedestal mount rocker? Or a standard stud mount after using the stud conversion kit? I havn't worked on a SBC in many years.
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gen1dak
Dodge Dakota
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3/17/2005
00:34:46
| RE: Rocker Arm Conversion
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Yeah, stud conversion. It's actually mentioned in the latest Mopar Muscle in an article about the Edelbrock aluminum Magnum-style heads. I've looked at the Ford pedestal thing too. They are awfully similar (hard to tell apart, actually). I bet it'd work too.
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.boB
Dodge Dakota
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3/17/2005
20:28:19
| RE: Rocker Arm Conversion
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Message:
Yeah, I figured that out from reading the catalog closely. Once you do the conversion to a 3/8" stud, then you can mount a SBC 1.7 rocker. So you have to buy a stud conversion kit ($90), the rockers ($300) and hardened push rods ($90). Starting to get expensive. Might as well use Harland Sharp.
I think I'm just going to call Jegs and order the pro-form parts just to see if they will fit. If they don't, I'll sell them on e-bay and get most (if not all) of my money back.
If I do, I'll let you know if it works.
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