LQ9 block and using a 4.8 accessories - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PokeyC10 · 12-30-2011, 01:08 PM

Ok, I found a prepped LQ9 block from TX and having it built in Dallas. Using a stock crank, forged pistons and rods. I also grabbed some 317 heads for it, which I will have a little porting done to it.

Now I know in a perfect world I should have grabbed a complete LQ9 with the harness and ECM. So I found a donor 4.8 for brackets, pulleys, accessories and intake. The Question is, will I have any issues with using the ECM and the harness from the 4.8 on the LQ9?

I know I am going to need a VSS signal generator because I am using turbo 400.

usmcchevy · 12-30-2011, 05:18 PM

You should be ok depending on the year of your LQ9 and the 4.8. What year are the engines?

PokeyC10 · 12-30-2011, 05:23 PM

The LQ9 is a 04 and the believe the 4.8 is a 02. But I will have to verify that... its in TX also (all this stuff is so easy to find in TX, wish I lived there)

Thought about switching to a L92 water pump and triming PS bracket so I could use a LS6 intake. Dunno yet..

usmcchevy · 12-30-2011, 06:33 PM

You should be good, If one were 07+ you would have issues.

PokeyC10 · 12-30-2011, 06:43 PM

Thanks!!
BTW I keep referring to the SWAP INFO you have linked in your signature, Sometimes I read too much from too many places and get overloaded.

12-30-2011, 01:08 PM	#1
PokeyC10 Registered User Join Date: May 2011 Location: Rockford, IL Posts: 39	LQ9 block and using a 4.8 accessories Ok, I found a prepped LQ9 block from TX and having it built in Dallas. Using a stock crank, forged pistons and rods. I also grabbed some 317 heads for it, which I will have a little porting done to it. Now I know in a perfect world I should have grabbed a complete LQ9 with the harness and ECM. So I found a donor 4.8 for brackets, pulleys, accessories and intake. The Question is, will I have any issues with using the ECM and the harness from the 4.8 on the LQ9? I know I am going to need a VSS signal generator because I am using turbo 400.

12-30-2011, 05:18 PM	#2
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: LQ9 block and using a 4.8 accessories You should be ok depending on the year of your LQ9 and the 4.8. What year are the engines? __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

12-30-2011, 05:23 PM	#3
PokeyC10 Registered User Join Date: May 2011 Location: Rockford, IL Posts: 39	Re: LQ9 block and using a 4.8 accessories The LQ9 is a 04 and the believe the 4.8 is a 02. But I will have to verify that... its in TX also (all this stuff is so easy to find in TX, wish I lived there) Thought about switching to a L92 water pump and triming PS bracket so I could use a LS6 intake. Dunno yet..

12-30-2011, 06:33 PM	#4
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: LQ9 block and using a 4.8 accessories You should be good, If one were 07+ you would have issues. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

12-30-2011, 06:43 PM	#5
PokeyC10 Registered User Join Date: May 2011 Location: Rockford, IL Posts: 39	Re: LQ9 block and using a 4.8 accessories Thanks!! BTW I keep referring to the SWAP INFO you have linked in your signature, Sometimes I read too much from too many places and get overloaded.



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