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I just bought a used LQ4 from a truck obviously. It had 180000 on it. I was curious if these engines can be bored, how much. If you guys have any links to engine builds off of the LQ4 HIT ME. Thanx

 

sure you can bore it. or you could hone it and run stock lsx crank/rods/heads and be fine with that...

what i'm looking into is if i can run a ls1 intake manifild and TB on lq heads

 

LQ4 engines are LSX based. They're just an iron block and 6.0L w/lager chambered LS6 heads. You can make it larger cubes like you can an LS2 block. Follow any of the plethora of 6.0 builds on ls1tech.

Yes you can run an LS1 intake on LQ heads, but why when you can run a LS6 intake? The LQ4 intake flows better than the LS6 intake though. Too bad it sits too high to fit under an f-body hood.
Are you going forced induction to where you need the larger chambers???

 

Just for curiousitys sake, what's the intended usage?

 

Out of pure curiosity, can I get any pictures of an LQ4 intake? Also would a Cowl Hood or something simular help remedy this issue?

 

You can bore them like any other iron block and use LS1-based parts in them.
The LQ4/LQ9 is the 6.0L truck block (LQ9 is the HO motor, which is irrelevant since you're changing everything anyway) and are used by MANY people for LSx stroker motors with 418+ ci.

Mike

 

Thinking of converting the LT1 OVER. i WOULD LIKE TO DO SOMETHING WITH A 408. Do LQ4 engines have the same heads as a LS6 WITH BIGGER CHAMBERS? I thought the LQ9 did but never heard about the LQ4. wHAT KIND OF COMPRESSION CAN BE HAD WITH THE 317 HEADS?

 

The 317 LQ4/9 heads are around 72cc, which will give you around 9:1 on a stock motor. LS6 heads are around 64cc, LS1 are around 66cc.

Compression is solely up to you and formulated by piston choice, head gasket thickness, how much you are going to deck the block, how many cubes you are going with, and how much you'll mill the heads. If I was building a naturally aspirated 408, I'd shoot for around 11.5:1-12:1. For a forced induction 408, I'd shoot closer to 9:1-9.5:1.

Mike

 

GMHTP did an intake comparison. Try there or possibly on ls1tech.com.

No, the intake fits under our cowl. A raised hood won't help.