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Forums->Hot Heads Tech Talk->Dodge 315 hemi rockers

charleypete1957
Dodge 315 hemi rockers


I've got a 315 with non adjustable rockers, and have been looking around for a set of adjustables. It seems I remember reading somewhere, and I can't find it again, that there were a set of roller rockers off of a Buick or a Pontiac or something or other that would drop right in. Too good to be true, sounds to me like, and I could kick myself for not paying closer attention when I found that. Has anybody else ever heard of anything like that?
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on: Mon 21 of Aug, 2017 [17:15 UTC] reads: 1629

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ron37
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Re: Dodge 315 hemi rockers
on: Wed 30 of Aug, 2017 [20:48 UTC] score: 0.00
I have several of both dimple and regular. When using the Red Ram or Super Red Ram covers I use valve cover spacers for the clearance.

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DaveBlakeman
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Re: Dodge 315 hemi rockers
on: Tue 29 of Aug, 2017 [18:03 UTC] score: 0.00
If you go the adjustable rocker arm route don't you then also need dimpled valve covers ? The adjustable pushrods are not a problem to adjust .

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ron37
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Re: Dodge 315 hemi rockers
on: Mon 28 of Aug, 2017 [18:28 UTC] score: 0.00
The message about the old Buick, etc. rockers was from many years ago. Don't know how it got reposted. Someone contacted me back then with the answer. They said the guy messed up in how he wrote it and was actually trying to say how to use the replacement rocker screws for these old engines when converting hemi rockers. They were smaller threads than the hemi, so they left more metal on the arm. Never found the article again. Any way I'm going to try the 5/16" thread type. Seems like a lot of places sell them with various size cup or ball ends. The main thing is to get the threads cut correctly.

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Jack
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Re: Dodge 315 hemi rockers
on: Thu 24 of Aug, 2017 [21:13 UTC] score: 0.00
The adjustable push rods are only a pain if the intake manifold is on the engine.
A set of gaskets are worth the investment.

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ron37
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Re: Dodge 315 hemi rockers
on: Thu 24 of Aug, 2017 [02:46 UTC] score: 0.00
> I've got a 315 with non adjustable rockers, and have been looking around for a set of adjustables. It seems I remember reading somewhere, and I can't find it again, that there were a set of roller rockers off of a Buick or a Pontiac or something or other that would drop right in. Too good to be true, sounds to me like, and I could kick myself for not paying closer attention when I found that. Has anybody else ever heard of anything like that?

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ron37
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Re: Dodge 315 hemi rockers
on: Thu 24 of Aug, 2017 [02:45 UTC] score: 0.00
Hot Heads sells adjustable pushrods for all the old hemi engines. If you do go the route of drilling and tapping your non-adjustable rockers, they sell both cup and ball type screws in both 5/16" and 3/8". They sell both types in 5/16" and 3/8" threads and the cup and ball in either size. I was looking at 5/16" threads and a 3/8" cup or ball. Figured the slightly smaller threads would leave a little more strength in the arm. Read a thread where they did the drill and tap to see if the 5/16" screw would break. They put it in a big press and the arm broke at the main shaft circle leaving the screw in good shape.

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Jack
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Re: Dodge 315 hemi rockers
on: Tue 22 of Aug, 2017 [17:17 UTC] score: 0.00
Do they make adjustable push rods for those?
More efficient, less reciprocating weight.

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charleypete1957
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Re: Re: Dodge 315 hemi rockers
on: Thu 24 of Aug, 2017 [02:35 UTC] score: 0.00
> Do they make adjustable push rods for those?
> More efficient, less reciprocating weight.

Yes, they did make some adjustable rocker arms, but they are a rare breed, and quite expensive when you can find them. Yes, also, you can get adjustable pushrods for these. I've read several forums that say they're a real pain in the butt to try to adjust, but it's doable. I may just have to go that route.


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