Looking to build an engine based on the LQ4 or LQ9 not sure which to get it will probably be a budget build but looking for some inputs and info. im new and looking for some guidance looking for a 500 hp. I am new to this sorry!!!!!!

 

this going into a manual or auto?

 

Auto!!!

 

both engine are the same. only difference is the LQ9 has higher compression. If your going to build the block then it doesnt matter which you choose cause you will be adding new internals. You could however save money on buying LQ4.

 

I have a grand total of roughly $5000cnd so not sure where abouts taht puts me i can get an lq4 for roughly $1400

 

Was figuring some head work and cam thin head gasket, or even different head???????? But was figuring on using stock internals crank, rods, pistons

 

dont quote me on this but i have been told they are not the same. the LQ4 has a slightly different crank (longer from what i have researched) and you cannot use it with a manual (a t56 anyway). but in your case you should be fine...

 

found this bro. you might see it useful... https://ls1tech.com/forums/conversio...on-needed.html

 

Well it appears i will be looking for a LQ9 2002 to 2009 that gets me started!!!!!

 

I wouldn't pay more than about a $400 premium for a LQ9 vs. LQ4 because that is about what it would cost to get 243/799 core heads to get the compression up on a LQ4.

A $5000 budget wont go too far depending on how ready the car is for the motor. Is this an already LS based vehicle with boltons or is this a retrofit? Signature helps us help you.

 

Its going into a 1984 buick gbody was a v6 stage 2 turbo car i have a retardely build 200r4 with trans brake and 4000 stall diff is well build car has ran in the 10's

 

So budget has to cover CAI, headers, swap parts like mounts and on and on so don't get carried away looking at heads and cam.

 

The engine itself will not be in the budget i will have 5000 for swap and other upgrades

 

The 99-00 Lq4 had the long cranks. The others are the same as the LQ9's.

 

N/A or N20 - LQ9
FI - LQ4

 

Both the LQ4 and LQ9 can be made with whatever compression you want them to be. Just figure out what compression ratio you're shooting for and mill the heads accordingly. It will also be contingent on what head gasket you choose to run.

 

That sounds great when you say it, but the more you mill, the less room you have for a good sized camshaft.