5.3l Swap to a LQ4 Vs LQ9 6.0L

What motor is the better one to go with? I know the LQ9 is like in a SS Silverado and the LQ4 you can find in 2500 seires trucks or even in vans!!!
I always here the LQ9 is better, but it goes for alot more then the LQ4! Whats the difference? I know the LQ4 is "like" the LS2 but its an IRON block and the ls2 is not iron block, has same or just about the same as the LS2! So which is the better route to go here... since an LS2 cost an arm and leg!!!

I currently have an 5.3l in my 99 GMC Ext Cab lowered 3/5 drop bell tech with 22's. All stock but the 77 series Intake from K&N. I was planning on putting an LS1 cam and a Wilson Fast 92mm Intake. but Seems that its better to go to the 6.0l. Any in put would help to know which way to go! Plus keep my 4L60E and build it that has 116k i hear its better to go this route because it has better gear ratios than the 80E. And should i re build my rear end so i dont have a one wheel wonder!!!

http://www.ls1truck.com/forums/lsx-t...0-lq4-lq9.html

Quote:

---

Originally Posted by ramair2002

http://www.ls1truck.com/forums/lsx-t...0-lq4-lq9.html

---

around how much power should i be around, if i do the cam swap, the fast 92 intake, and 92 tb, shorty headers , new cats, super 44, intake airraid or something, 8.5 wires, and some good set of plugs... also i will be taking the truck for a base dyno run, and then have it dyno tuned to get the most out of it, if i mod my 5.3l

Quote:

---

Originally Posted by NYAFACE86

around how much power should i be around, if i do the cam swap, the fast 92 intake, and 92 tb, shorty headers , new cats, super 44, intake airraid or something, 8.5 wires, and some good set of plugs... also i will be taking the truck for a base dyno run, and then have it dyno tuned to get the most out of it, if i mod my 5.3l

---

I would do a cam, long tube headers, Off road Y pipe, full bolt ons (intake, pulleys...), L92 heads and intake and the most important thing...CUSTOM TUNE!

http://www.ls1truck.com/forums/dynod...5-numbers.html

Makes good numbers!

i would do the long tube headers but dont know anyone that would weld them on so am stuck with going to a shop and they say its a no no , remember am in CALI!!! so they wont put it on. since they arent legal lol... like we all care..... lol... i will do a custom o2 wide band custom dyno tune. i dont know if i really want to go with a different cam, because if i go that much into it then i think i should just swap the motor to the LQ4 for all the money that i be spending..

i just bought an LS1 cam for Very Cheap! and i dont want to get new heads too much, and just want to be rolling around the 400+ mark. all motor which i know i can reach.. !!!

Quote:

---

Originally Posted by NYAFACE86

i would do the long tube headers but dont know anyone that would weld them on so am stuck with going to a shop and they say its a no no , remember am in CALI!!! so they wont put it on. since they arent legal lol... like we all care..... lol... i will do a custom o2 wide band custom dyno tune. i dont know if i really want to go with a different cam, because if i go that much into it then i think i should just swap the motor to the LQ4 for all the money that i be spending..

---

I thought you were talking about modding the 6.0. For the 5.3, sucks about the Cali rules and LT's..., I would do CAI, exhaust (Magnaflow), pulleys, efans and a posi. Wires and plugs aren't necessary since the stockers do well. Same with the intake. Your 60e may end up being a weak link. If you are going to start making serious power, I would consider the 80e swap.

Quote:

---

Originally Posted by NYAFACE86

i just bought an LS1 cam for Very Cheap! and i dont want to get new heads too much, and just want to be rolling around the 400+ mark. all motor which i know i can reach.. !!!

---

400rwhp all motor on a 5.3 is going to be pretty tough. Heads would be a must. The LS1 cam will only give minimal gains over the stocker. You'll need a MUCH more aggressive cam to get to the 400 mark. You'll need a stall to to match the aggressive cam.

Sell the 60e while it is still working and valuable. Once you break it you won't get squat for it. Use the funds for selling the 60e to get a stock 2001+ 80e transmission. Its worth the effort to swap it in. You will have to get the tune updated for it but your bank account will thank you down the road if you do any serious racing or towing with your ride.

So if i get the LQ4, well i be alot easier to hit that 400+ mark>? later down the i will get a Supercharger. thats why i would go with the LQ4 for lower ratio. and alot of people around here say just to build the 60e , is the 80e that much better even built a lil bit over the 60e? i like the ratios it has now for the hwy and in town.... and how much would i be able to get out of the 60e if i sell it?