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3.6 heads compatible with 3.4 block?

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YOUR RESEARCH3.6 heads compatible with 3.4 block?

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Repair (don�t know what�s wrong

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Suggestion · Original poster
I have an intermix issue on my 3.4 and have access to a 3.6 long block that needs repair (don�t know what�s wrong with it, but it does turn over by hand).
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3.6 heads compatible with 3.4 block?

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Leading evidence: 'Repair (don�t know what�s wrong' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair (don�t know what�s wrong' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Use chain adjuster or actuator

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Suggestion
The 3.4L heads are designed for the 5 chain engines with the VarioCam system that uses a chain adjuster or actuator.
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3.6 heads compatible with 3.4 block?

Use vein cell adjustor

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Suggestion
The 3.6L heads are designed for 3-chain operation with the VarioCam+ system that uses a vein cell adjustor.
Original post Read captured discussion
3.6 heads compatible with 3.4 block?

Frequently discussed actions (3)

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Repair (don�t know what�s wrong

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion · Original poster
I have an intermix issue on my 3.4 and have access to a 3.6 long block that needs repair (don�t know what�s wrong with it, but it does turn over by hand).
Original post Read captured discussion
3.6 heads compatible with 3.4 block?

Use chain adjuster or actuator

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The 3.4L heads are designed for the 5 chain engines with the VarioCam system that uses a chain adjuster or actuator.
Original post Read captured discussion
3.6 heads compatible with 3.4 block?

Use vein cell adjustor

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The 3.6L heads are designed for 3-chain operation with the VarioCam+ system that uses a vein cell adjustor.
Original post Read captured discussion
3.6 heads compatible with 3.4 block?

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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi. Does anyone know if the 3.6 heads can be made to work on a 3.4 block? I have an intermix issue on my 3.4 and have access to a 3.6 long block that needs repair (don�t know what�s wrong with it, but it does turn over by hand). Easy option might just be to fix my cracked head(s) and save myself the grief. Thanks in advance.

POST 2Original post

Highly doubt it. The variocam system is very different between the the 3.4 and 3.6l. Just send the head out for repair.

POST 3Original post

Quotes source posts: 17416664, 17417101

The 3.4L heads are designed for the 5 chain engines with the VarioCam system that uses a chain adjuster or actuator. The 3.6L heads are designed for 3-chain operation with the VarioCam+ system that uses a vein cell adjustor. I agree with De Jeeper... send your heads to Len Hoffman. He specializes in Porsche head repair and can make the work like brand new! https://newsite.hamheads.com/

POST 4Original post

Not just that, I believe the sizes of the cooling passages between the head and block differ between the mki and mkii

POST 5Original post

Here's a good resource for you: https://newsite.hamheads.com/2016/11...age-m96m979a1/

POST 6 / ORIGINAL POSTEROriginal post

Quotes source post: 17417604

Excellent link with lots of good information. Thanks for this, and thanks to all who replied.

This is a source reference. Confirm exact model applicability in the original material.