are all lm4's oddball?

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Dec 14, 2017 | 03:58 PM

yenkomike

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From: oxford mi

are all lm4's oddball?

well I picked up a 2004 lm4 to build for the nova and get some weight off the nose and just have fun.

picked one up cheap at a boneyard out of a wrecked rainier.

well I noticed it had the 13mm valley and exaust bolts so I figured a good rod engine. but no it has gen 3 rods.

it has all the tell tale signs of gen 4 rods it even has equal length head bolts and siamise bores.

anyone else run into this?

I think I'm going to open the rings and run the hell out of it like it sits with my 220/230 Bennett cam.

Dec 14, 2017 | 04:01 PM

G Atsma

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From: Central Cal.

Equal length head bolts started WAY before the onset of Gen IV engines. Gen IV rods started a couple years after the bolt change.

Dec 14, 2017 | 04:03 PM

JoeNova

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Nearly all 04s had 13mm bolts, but not all 04s had gen 4 rods.

I don't think any of the LM4s ended up getting Gen 4 rods. Even the 04s. At least, I've never heard of one.

Dec 14, 2017 | 04:09 PM

MY_2K_Z

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From: Houston

Quote:

Originally Posted by JoeNova

Nearly all 04s had 13mm bolts, but not all 04s had gen 4 rods.

I don't think any of the LM4s ended up getting Gen 4 rods. Even the 04s. At least, I've never heard of one.

My 04 4.8 has gen 4 rods that are now in a destroyed 6.0