INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

Mild LQ4 rebuild

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Old May 1, 2017 | 04:58 PM
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Default Mild LQ4 rebuild

Hey guys new here, I've searched already but just wanna get some more opinions on my plan. I've got an lq4 torn down that spun a rod bearing, I've got another crank for it already so I'm looking to rebuild to swap into my 08 to replace the 4.8. so far I've got a set of stock 243 heads, ARP rod and head bolts and a EPS stg3 truck torque cam which is 224/230@.050 on 111+3. The truck is an extended cab 2wd with long tubes, no cats and a tune. I plan on either 3.90 or 4.10 gears. I'm starting to think this might be a little too much cam, it's my daily driver but it doesn't see many miles during the week. Thanks in advance
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Old May 1, 2017 | 07:10 PM
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A 212/218 would more daily friendly and not need a stall converter unlike the 224/230 would need.

Don't forget that the LQ4 block has a totally different crank trigger, cam trigger and different knock sensor locations. You'll have to either swap reluctor wheels and cam gears or use a converter box if they work the other way around like that.
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Old May 1, 2017 | 07:26 PM
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The crank I have has a 58 tooth wheel already, and I planned on using the front cover from the 4.8.....as far as the knock sensors, I have read that you can drill and tap the side of the block to accept the newer style sensors. Anyone correct me if I'm wrong
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Old May 3, 2017 | 10:09 AM
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You might have to use a timing cover from Gen 4 since the cam sensor is located there (Not 100% sure). Yes you can tap the side of the block for the knock sensor. My build is going to be similar. Gen 4 block with (probably) lq4 rotating assembly, but my truck is an 06. I would like flat tops but with 243's I'd be around 10.5-11 depending on mill and head gasket, which is where I want to be since it's a daily on 91. If you already have a 58x reluctor wheel, you're good to go there.
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