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YOUR RESEARCHIn search of a 3.4l case and pistons
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Use pistons
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Performed · outcome unconfirmed
I have tons of good used pistons, but not any blocks.
Leading evidence: 'Use pistons' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check these guys out' (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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Hi all,
I am finally getting around to having my 2000 C4 cab 3.4l motor rebuilt after a nasty intermix issue. (The head is cracked in two (!) places!) Upon teardown, it is apparent that I need a new case and pistons as one of the cylinders is scored and the associated piston is slightly damaged.
Please PM me if you have a case and pistons or know where one can be sourced. I would also consider a complete engine if it is in good condition. Incidentally, I will have at least one spare good head after the rebuild if anyone is interested.
Cheers,
TomF
My understanding is the cylinders are bored to 99mm (3.6) but the stock 3.4 crank is reused. But yea, please check with LN.
http://lnengineering.com/products/watercooled-cylinders-pistons/34-to-36-911-nickies-inc-99mm-fsr-je-piston-set-inc-rings-pins-clips.html
That sounds correct for the 3.4-to-3.6 conversion, but the crank replacement question pertains to the 3.4-to-3.8 conversion. I believe that involves a boring to 101mm, but that the original crank nevertheless is still used. Was so in my case if I recall correctly.
The 101 bore will net 3.8L with the stock 3.4 (78mm) crank. The 99mm bore with the same crank is 3.6L.
I have tons of good used pistons, but not any blocks.
Approach with care!
